acme screw jack,acme screw actuator,acme screw drive,acme thread screw jack,worm gear lift manufacturer features:
1. Static load capacity maximum 100 ton, dynamic load capacity maximum 26 ton.
2. Lift screw diameter from 20 mm to 100 mm, screw pitch from 5 mm to 16 mm.
3. Each jack model has 3 worm gear ratios from 1/5 to 1/40.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounted orientation.
5. Accurate positioning, self-locking acme screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems.
6. Manual operated screw jack by hand wheel or hand crank, motorized screw jack by electric motor or gearmotor driven, or both.
7. 3-phase or single phase motor driven with 1500 rpm input, standard lifting speed 1500 mm/min, 750 mm/min and 375 mm/min.
8. No standard lift screw stroke, all lift screw travel length is processed according customers requirements. Under max. compression load, without guides, from 100 mm to 900 mm stroke, with guides from 200 mm to 1800 mm stroke. Under a tension load, from 700 mm to 4500 mm stroke.
9. Lift screw end fittings include top plate, clevis end, plain end and threaded end, standard or your design dimensions are available.
10. Individually or multi worm gear screw jacks system arrangements are available.
11. Compared with fast speed hydraulic cylinder and pneumatic cylinder, it is of easy installation, small sizes, easy operation and maintenance, precisely lifting, self-locking, synchronous speed, environmental protection, multiple units arrangements.
12. Applications in steel mills roller adjustment, pipe mills roller adjustment, tube mills roller adjustment, roll forming mills roller adjustment, plate mills roller adjustment, rolling mills rollers adjustment, powered feeder straightener rolls adjustment, roller system adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, cold roller adjustment, hot roller adjustment, coil handing, semi-finished product handling, brush adjustment belt cleaning, zinc pot lifting mechanism, air knife system adjustment, roll pass system, sizing stand and molten steel pot lifting system. Whatever you pushing, pulling, lifting, adjusting or aligning linear motions need, we will have a the most complete solution for you.
ball screw jack,electric ball screw jack,manual ball screw jack,ball screw actuators,ball screw drive,ball screw lifts features:
1. Lifting force 5kN to 500kN. Under max. lifting force, input shaft required torque, high ratio 1.3Nm to 318Nm, low ratio 0.62Nm to 178Nm.
2. Ball screw diameter 16 mm to 100 mm, lead 5 mm to 24 mm.
3. Worm gear ratio 1/5 to 1/32.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
5. High speed, high precision, high efficiency, high duty cycle, high performance, high frequency operation, low drive torque, long service life.
6. motorized ball screw jack by 3-phase or single phase electric motor/gearmotor, manual ball screw jack by hand wheel/hand crank.
7. Ball screw ends include top plate, clevis end, plain end and threaded end.
8. Individually or multiple ball screw jack lifting system arrangements are available.
9. Application in steel, pipe, tube, plate, roll forming roller adjustment, feeder straightener rolls adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, coil sheet slitter line, paint coating line, cut to length line, tension levelling line, continuous galvanizing line, beverage production line, foam concrete cutting machine, sanding machine, heavy vehicles mobile lifting platform, bottle monitoring system height adjustment, conveyor adjustment, plate saw angle adjustment, spray infeed conveyor lift system, theatre stage lifting platform, solar tracker, satellite dish antenna azimuth, raising sluice gate, screw scissor lift table, synchronized lifting system, food processing lifting system, extrusion machine, cnc steel leveling machine, blow molding machine, curing oven lifts, bolted tank, steel shuttering concrete beams adjustment, vintage industrial crank desk, solar panel tracking system, railway maintenance lifting jack, damper adjustment, continuous casting, cnc cut to length machine, robotics arm raising, palletizer, extrusion machine, motorized self-raising tower system, angle tilt adjustments with double clevis, aircraft docking system, open and close flood gates, metallurgy industry, mining industry, chemical industry, construction industry and irrigation industry.
Note: ball screw without self-locking, braking motor, brake mechanism or other locking systems are required when keep the position. When a motorized ball screw jack, less power is required than an equivalent size machine screw jack.
Jtc5 worm gear screw lifter,small mechanical worm gear screw jacks, stainless steel worm gear screw jack,small worm geared screw jack,small industrial worm screw jacks,lifting worm gear jack, jack worm screw static load capacity 5 kn, high speed torque 2.6 n.m, low speed torque 0.8 n.m. lead screw (spindle) Tr18x4. high speed gear ratio 1/4, low speed gear ratio 1/16. upright or inverted translating screw, rotating screw and keyed screw configurations. precision positioning, self locking lead screw which support the loads and hold position without brake mechamism. hand wheel or hand crank manual operation, or single phase or three phases electric motor driven, gear motor driven or dc 24v gear reduction motor drives. thread end, clevis end, plain end, forked head and top plate (flange type) for lead screw (spindle) end types. customized various length stroke, under tension load, maximum 400 mm stroke. single screw jack or multiple screw jacks system arrangements.
90 degree angle gear drive, 90 degree drive gearbox to 200kw industrial, 90 deg gearbox, high torque bevel gearbox Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
90 degree gearbox,90 degree bevel gearbox,90 degree 1:1 ratio gearbox,90 degree angle gear drives features:
1. 90 degree angle assembly spiral bevel gears.
2. Used to transmit rotary motion, mechanical power and torque.
3. Milled cubic body small sizes 65x65x65mm to 260x260x260mm.
4. High efficiency bevel gearbox, up to 98%.
5. Gear ratios 1:1, 1.5:1, 2:1, 3:1, 4:1 and 5:1, customized special gear ratio.
6. Input power from 0.05Kw to 157Kw. Drive torque from 11.56N.m to 1842N.m. Input and output speed from 50 to 1500Rpm (high speed gearbox, contact Jacton engineers).
7. 12mm to 60mm diameter input and output shaft, 8 types shaft arrangements and direction of shaft rotating. Shafts can be rotated in both forward and reverse direction. Clockwise and counter-clockwise rotation direction are available.
8. Soild shaft, hollow shaft and motor flange adapter are available.
9. horizontal mounting, overhung mounting or wall mounting are available.
10. 2 way gearbox, 3 way gearbox, 4 way gearbox are available.
11. low backlash 8 to 15 arcmin, quiet low noise less than 80dB under 1500rpm at 1 meter distance, low working temperature less than 50 degree centigrade.
12. application in printing press, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, satellite dish antennas, gate valve actuators, food processing, robotics, rubber processing, wrapping machine, solar panel, commercial mower, street sweeper, dual steering, bulkhead door opener, scissor lift, vertical pump drive, sand spreader, residential mower, car wash curtain, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader, business form press, feed screw drive, sewage conveyor, collating machinery, mixing equipment, conveyor drive, screw jack system, film processor and pottle packaging equipment. Whatever your goal is to blend, blow, bottle, crank, cut, convey or the task is to press, propel or raise, Jacton bevel gearbox is welcomed and ideal power transmission solution with all these industries.
The document provides specifications for various 2007-2008 Polaris snowmobile models including the 600 HO IQ, 600 HO Switchback, 700 HO IQ Dragon, and 800 Dragon RMK. It includes details on the engine, carburetor settings, clutch settings, dimensions, capacity, electrical system, track, suspension and other technical details. The specifications are organized by model and altitude for things like jetting.
2007 polaris 600 ho switchback cfi snowmobile service repair manualjksmemd eudkmmd
The document provides specifications for the 2007-2008 IQ Snowmobile models including engine details, dimensions, weight, fuel capacity, electrical system information, track details, and suspension components. It lists specifications for individual models such as the 600 HO IQ, 600 HO Switchback, 700 HO IQ Dragon, and others. Jetting charts are provided for adjusting carburetors based on altitude and temperature.
2007 polaris 600 ho iq lx cfi snowmobile service repair manualdfjjsjekfkskemme
The document provides specifications for the 2007-2008 IQ Snowmobile models including engine details, dimensions, weight, fuel capacity, electrical system information, track details, and suspension components. It lists specifications for individual models such as the 600 HO IQ, 600 HO Switchback, 700 HO IQ Dragon, and others. Jetting charts are provided for adjusting carburetors based on altitude and temperature.
ball screw jack,electric ball screw jack,manual ball screw jack,ball screw actuators,ball screw drive,ball screw lifts features:
1. Lifting force 5kN to 500kN. Under max. lifting force, input shaft required torque, high ratio 1.3Nm to 318Nm, low ratio 0.62Nm to 178Nm.
2. Ball screw diameter 16 mm to 100 mm, lead 5 mm to 24 mm.
3. Worm gear ratio 1/5 to 1/32.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
5. High speed, high precision, high efficiency, high duty cycle, high performance, high frequency operation, low drive torque, long service life.
6. motorized ball screw jack by 3-phase or single phase electric motor/gearmotor, manual ball screw jack by hand wheel/hand crank.
7. Ball screw ends include top plate, clevis end, plain end and threaded end.
8. Individually or multiple ball screw jack lifting system arrangements are available.
9. Application in steel, pipe, tube, plate, roll forming roller adjustment, feeder straightener rolls adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, coil sheet slitter line, paint coating line, cut to length line, tension levelling line, continuous galvanizing line, beverage production line, foam concrete cutting machine, sanding machine, heavy vehicles mobile lifting platform, bottle monitoring system height adjustment, conveyor adjustment, plate saw angle adjustment, spray infeed conveyor lift system, theatre stage lifting platform, solar tracker, satellite dish antenna azimuth, raising sluice gate, screw scissor lift table, synchronized lifting system, food processing lifting system, extrusion machine, cnc steel leveling machine, blow molding machine, curing oven lifts, bolted tank, steel shuttering concrete beams adjustment, vintage industrial crank desk, solar panel tracking system, railway maintenance lifting jack, damper adjustment, continuous casting, cnc cut to length machine, robotics arm raising, palletizer, extrusion machine, motorized self-raising tower system, angle tilt adjustments with double clevis, aircraft docking system, open and close flood gates, metallurgy industry, mining industry, chemical industry, construction industry and irrigation industry.
Note: ball screw without self-locking, braking motor, brake mechanism or other locking systems are required when keep the position. When a motorized ball screw jack, less power is required than an equivalent size machine screw jack.
Jtc5 worm gear screw lifter,small mechanical worm gear screw jacks, stainless steel worm gear screw jack,small worm geared screw jack,small industrial worm screw jacks,lifting worm gear jack, jack worm screw static load capacity 5 kn, high speed torque 2.6 n.m, low speed torque 0.8 n.m. lead screw (spindle) Tr18x4. high speed gear ratio 1/4, low speed gear ratio 1/16. upright or inverted translating screw, rotating screw and keyed screw configurations. precision positioning, self locking lead screw which support the loads and hold position without brake mechamism. hand wheel or hand crank manual operation, or single phase or three phases electric motor driven, gear motor driven or dc 24v gear reduction motor drives. thread end, clevis end, plain end, forked head and top plate (flange type) for lead screw (spindle) end types. customized various length stroke, under tension load, maximum 400 mm stroke. single screw jack or multiple screw jacks system arrangements.
90 degree angle gear drive, 90 degree drive gearbox to 200kw industrial, 90 deg gearbox, high torque bevel gearbox Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
90 degree gearbox,90 degree bevel gearbox,90 degree 1:1 ratio gearbox,90 degree angle gear drives features:
1. 90 degree angle assembly spiral bevel gears.
2. Used to transmit rotary motion, mechanical power and torque.
3. Milled cubic body small sizes 65x65x65mm to 260x260x260mm.
4. High efficiency bevel gearbox, up to 98%.
5. Gear ratios 1:1, 1.5:1, 2:1, 3:1, 4:1 and 5:1, customized special gear ratio.
6. Input power from 0.05Kw to 157Kw. Drive torque from 11.56N.m to 1842N.m. Input and output speed from 50 to 1500Rpm (high speed gearbox, contact Jacton engineers).
7. 12mm to 60mm diameter input and output shaft, 8 types shaft arrangements and direction of shaft rotating. Shafts can be rotated in both forward and reverse direction. Clockwise and counter-clockwise rotation direction are available.
8. Soild shaft, hollow shaft and motor flange adapter are available.
9. horizontal mounting, overhung mounting or wall mounting are available.
10. 2 way gearbox, 3 way gearbox, 4 way gearbox are available.
11. low backlash 8 to 15 arcmin, quiet low noise less than 80dB under 1500rpm at 1 meter distance, low working temperature less than 50 degree centigrade.
12. application in printing press, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, satellite dish antennas, gate valve actuators, food processing, robotics, rubber processing, wrapping machine, solar panel, commercial mower, street sweeper, dual steering, bulkhead door opener, scissor lift, vertical pump drive, sand spreader, residential mower, car wash curtain, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader, business form press, feed screw drive, sewage conveyor, collating machinery, mixing equipment, conveyor drive, screw jack system, film processor and pottle packaging equipment. Whatever your goal is to blend, blow, bottle, crank, cut, convey or the task is to press, propel or raise, Jacton bevel gearbox is welcomed and ideal power transmission solution with all these industries.
The document provides specifications for various 2007-2008 Polaris snowmobile models including the 600 HO IQ, 600 HO Switchback, 700 HO IQ Dragon, and 800 Dragon RMK. It includes details on the engine, carburetor settings, clutch settings, dimensions, capacity, electrical system, track, suspension and other technical details. The specifications are organized by model and altitude for things like jetting.
2007 polaris 600 ho switchback cfi snowmobile service repair manualjksmemd eudkmmd
The document provides specifications for the 2007-2008 IQ Snowmobile models including engine details, dimensions, weight, fuel capacity, electrical system information, track details, and suspension components. It lists specifications for individual models such as the 600 HO IQ, 600 HO Switchback, 700 HO IQ Dragon, and others. Jetting charts are provided for adjusting carburetors based on altitude and temperature.
2007 polaris 600 ho iq lx cfi snowmobile service repair manualdfjjsjekfkskemme
The document provides specifications for the 2007-2008 IQ Snowmobile models including engine details, dimensions, weight, fuel capacity, electrical system information, track details, and suspension components. It lists specifications for individual models such as the 600 HO IQ, 600 HO Switchback, 700 HO IQ Dragon, and others. Jetting charts are provided for adjusting carburetors based on altitude and temperature.
Jt 0.5 t travelling nut screw jack shaft, 0.5 ton jack screw length,500 kg synchronized screw jack,5kn screw jack roller bearings,1000lb screw jack housing casting static lifting force 500 kg, dynamic lifting force 300 kg. lifting screw (spindle) Tr20x5. high speed gear ratio 1/5, medium speed gear ratio 1/10, low speed gear ratio 1/20. upright or inverted translating screw, rotating screw and keyed screw configurations. precision positioning, self locking lead screw which support the loads and hold position without brake mechamism. hand wheel or hand crank manual operation, or single phase or three phases electric motor driven, gear motor driven or dc 24v gear reduction motor drives. thread end, clevis end, plain end and top plate (flange type) for lead screw (spindle) end types. customized various length stroke, when maximum compression load, 100 mm stroke without guidances, 200 mm stroke with guidances. when tension load, 700 mm stroke. single screw jack or multiple screw jacks system arrangements.
1. The document discusses micro-miniature screw jacks that are among the smallest in the world, with lifting forces up to 2.5kN and travel lengths up to 300mm.
2. These screw jacks are used in beverage production lines for height adjustment and can washing, improving output and reducing downtime.
3. Jacton Electromechanical Co. is a Chinese manufacturer of precision screw jacks and lifting systems, serving customers globally across various industries.
Worm gears allow rotational speed and torque to be controlled. They are commonly used for tuning stringed musical instruments, in elevator machinery, and differentials in vehicles. Worm gears provide mechanical advantage through gear reduction, allowing smaller rotational forces to overcome larger resistive loads.
The document describes the JTC-Series Cubic Screw Jack. It has a worm gear driven trapezoidal lead screw that incorporates a heat-treated steel worm and bronze worm gear. It uses ball bearings and seals to support components. The jack housing is made of ductile iron and comes in various configurations for different applications. It can provide lifting forces from 2.5 to 500 kN and linear speeds up to 1.5 m/min. Accessories include motors, wheels, and switches. It is used for applications requiring controlled lifting/lowering such as conveyors and stages.
The document describes JTB-Series Ball Screw Jacks, which use ball screws and ball nuts instead of machine screws to reduce torque requirements. They have worm gears that drive bronze gear sets and ball nuts to translate or rotate lifting ball screws. The ball screw design allows for smoother and more efficient lifting than machine screw jacks. JTB ball screw jacks are used where controlled lifting is required and can be installed as single units or in lifting systems. They come in various configurations for different applications.
worm gear screw jack,motorised worm gear screw jack,manual worm gear screw jack,worm drive screw jack features:
1. Maximum load capacity from 2.5 ton to 120 ton, maximum torque from 18 Nm to 3315 Nm.
2. Lift screw diameter 30 mm to 180 mm, screw pitch 6 mm to 25 mm.
3. Each jack has two gear ratio from 1/6 to 1/36.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
5. Precisely positioning, self-locking acme screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems.
6. Manual screw jack by hand wheel or hand crank, motor screw jack by electric motor or gearmotor driven, or both.
7. 3-phase or single phase motor driven with 1500 rpm input, standard lifting speed 1500 mm/min and 375 mm/min.
8. No standard lift screw stroke, maximum travel stroke 1500mm to 7000mm when tension load.
9. Top plate, clevis end, plain end and threaded end are available.
10. Individually or multiple worm gear screw jacks lifting system are available.
11. Application in steel, pipe, tube, plate, roll forming roller adjustment, feeder straightener rolls adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, coil sheet slitter line, paint coating line, cut to length line, tension levelling line, continuous galvanizing line, beverage production line, foam concrete cutting machine, sanding machine, heavy vehicles mobile lifting platform, bottle monitoring system height adjustment, conveyor adjustment, plate saw angle adjustment, spray infeed conveyor lift system, theatre stage lifting platform, solar tracker, satellite dish antenna azimuth, raising sluice gate, screw scissor lift table, synchronized lifting system, food processing lifting system, extrusion machine, cnc steel leveling machine, blow molding machine, curing oven lifts, bolted tank, steel shuttering concrete beams adjustment, vintage industrial crank desk, solar panel tracking system, railway maintenance lifting jack, damper adjustment, continuous casting, cnc cut to length machine, robotics arm raising, palletizer, extrusion machine, motorized self-raising tower system, angle tilt adjustments with double clevis, aircraft docking system, open and close flood gates, metallurgy industry, mining industry, chemical industry, construction industry and irrigation industry.
Jtc200 worm gear screw lifter,20000kg rotating screw jack,20ton travelling nut screw jack,20 t 4 ft worm gear lift jack,200 kn worm screw lift assembly,20 tonnes cubical gearbox screw jack static load capacity 200 kn, high speed torque 146 n.m, low speed torque 48 n.m. lead screw (spindle) Tr70x10. high speed gear ratio 1/10, low speed gear ratio 1/40. upright or inverted translating screw, rotating screw and keyed screw configurations. precision positioning, self locking lead screw which support the loads and hold position without brake mechamism. hand wheel or hand crank manual operation, or single phase or three phases electric motor driven, gear motor driven or dc 24v gear reduction motor drives. thread end, clevis end, plain end, forked head and top plate (flange type) for lead screw (spindle) end types. customized various length stroke, under tension load, maximum 3000 mm stroke. single screw jack or multiple screw jacks system arrangements.
This document discusses different types of simple machines and mechanisms that make life easier for humans. It describes how wheels were developed over time from log rollers to solid wheels to spoked wheels. It also mentions the use of animal power and levers as simple machines that increase mechanical advantage. Finally, it briefly outlines different types of gears and motions like linear and rotational.
The document provides information about workshop technology 1 and the centre lathe machine. It discusses the objectives, introduction, parts of the lathe machine including the bed, carriage, tool post, and headstock. It also describes workholding devices such as chucks and collets. It explains tool bits including shapes, angles, and materials. Finally, it lists common lathe machine operations such as turning, boring, facing, drilling, knurling, and thread cutting.
Encontrar a informação na Biblioteca do DARQformaticefa
1. O documento fornece informações sobre como utilizar os recursos da Biblioteca do DARQ, incluindo:
2. Como pesquisar e localizar informação nos catálogos e bases de dados disponíveis;
3. Os serviços disponíveis como empréstimo, fotocópias e digitalização de documentos.
Roma Consulting was founded in 2007 to select automotive suppliers for the South American market and support their market development. It has since expanded to provide management consulting services including reorganizations, business plans, and support for foreign companies expanding in Brazil. The company works with automotive suppliers and customers in areas like components, production systems, and logistics. It has supported many international companies entering the Brazilian market.
Portfolio in brief about Aeonex Group. This presentation is basically used to display in public gathering or events to give people idea about our activities and what types of services are being provided by Aeonex.
Este documento presenta el silabo de la asignatura Mundología de la Carrera de Derecho de la Universidad Regional Autónoma de los Andes. El curso busca que los estudiantes conozcan la realidad nacional en el contexto continental y mundial, considerando aspectos sociales, económicos y políticos, así como la incidencia de lo cultural y étnico. Se explican los objetivos, temas, metodología, evaluación y contribución del curso a la formación profesional de los estudiantes de Derecho.
Comic Zeal Comic Reader es una de las mejores aplicaciones para leer cómics y manga, permitiendo la lectura inversa que requiere este genero.
Comic Zeal permite leer comic en los formatos de archivo más comunes para comic como cbz, cbr, zip, rar y PDF. Una de las características más apreciadas en esta aplicación es la capacidad para organizar nuestros comics en carpetas, añadirles etiquetas y ordenarlos por distintos criterios de cara a su visualización y recuperación.
Islam allows fashion but within Islamic rules for both women and men. The document discusses appropriate Islamic dress for women, including hijab, which covers the hair, neck and ears while showing the face. It notes that tight buns or showing too much hair would be against Islamic law. Muslim women's fashion should maintain modesty and cover the chest and aurah (areas that must be covered) as defined in Islamic rules. Creativity in hijab can accentuate beauty as long as it follows Islamic guidelines. The conclusion is that Muslim women can follow trends but not at the expense of obeying hijab requirements or becoming "fashion victims".
self locking jack screw,heavy duty screw jacks,long stroke screw jack,heavy duty linear actuator,heavy duty lifting screw features:
1. Lifting Force from 2.5kN to 500kN. Under max. lifting force, required drive torque high speed from 1.2Nm to 442Nm, low speed from 0.4Nm to 148Nm.
2. Acme screw diameter from 16 mm to 120 mm, screw pitch from 4 mm to 14 mm.
3. Each jack has two gear ratios from 1/4 to 1/56.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
5. Precision positioning, self-locking acme screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems.
6. Hand-operated screw jack by handle or crank, motorised screw jack by by 3-phase or single phase motor or gear motor.
7. No standard acme screw travel length, all acme screw travel length is processed according customers requirements. Maximum permissible from 300mm to 5500mm travel length.
8. Amce screw end fittings include top plate, clevis end, plain end, threaded end and forked head.
9. Application in steel, pipe, tube, plate, roll forming roller adjustment, feeder straightener rolls adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, coil sheet slitter line, paint coating line, cut to length line, tension levelling line, continuous galvanizing line, beverage production line, foam concrete cutting machine, sanding machine, heavy vehicles mobile lifting platform, bottle monitoring system height adjustment, conveyor adjustment, plate saw angle adjustment, spray infeed conveyor lift system, theatre stage lifting platform, solar tracker, satellite dish antenna azimuth, raising sluice gate, screw scissor lift table, synchronized lifting system, food processing lifting system, extrusion machine, cnc steel leveling machine, blow molding machine, curing oven lifts, bolted tank, steel shuttering concrete beams adjustment, vintage industrial crank desk, solar panel tracking system, railway maintenance lifting jack, damper adjustment, continuous casting, cnc cut to length machine, robotics arm raising, palletizer, extrusion machine, motorized self-raising tower system, angle tilt adjustments with double clevis, aircraft docking system, open and close flood gates, metallurgy industry, mining industry, chemical industry, construction industry and irrigation industry.
bevel gear screw jack,high speed screw jack,quick lifting screw jack,gear ratio 1:1 screw jack features:
1. Load capacity 25kN to 500kN. When full load, worm torque high speed 92Nm to 4712Nm, low speed 46Nm to 2828Nm.
2. Lift screw diameter 30 mm to 120 mm, screw pitch 6 mm to 16 mm.
3. High gear ratio 1:1, low gear ratio 2:1.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
5. Difference from worm gear screw jack, driven spindle by spiral bevel gear sets.
5. Manual operated bevel gear screw jack by hand wheel or hand crank, or electrically operated bevel gear screw jack by 3-phase or single phase motor or gear motor.
6. Processing lift screw stroke according to clients needs. Under max. compression load, without guides 250mm to 1000mm stroke, with guides 400mm to 2000mm stroke. Under tension load, max. 1500mm to 5500mm stroke.
7. Lift screw end fittings include top plate, clevis end, plain end and threaded end.
8. Full synchronization bevel gear screw jack system, doesn't require right angle bevel gearbox to transmit torque and power, bevel gear screw jacks are directly connected by line shaftings and couplings.
9. Application in steel, pipe, tube, plate, roll forming roller adjustment, feeder straightener rolls adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, coil sheet slitter line, paint coating line, cut to length line, tension levelling line, continuous galvanizing line, beverage production line, foam concrete cutting machine, sanding machine, heavy vehicles mobile lifting platform, bottle monitoring system height adjustment, conveyor adjustment, plate saw angle adjustment, spray infeed conveyor lift system, theatre stage lifting platform, solar tracker, satellite dish antenna azimuth, raising sluice gate, screw scissor lift table, synchronized lifting system, food processing lifting system, extrusion machine, cnc steel leveling machine, blow molding machine, curing oven lifts, bolted tank, steel shuttering concrete beams adjustment, vintage industrial crank desk, solar panel tracking system, railway maintenance lifting jack, damper adjustment, continuous casting, cnc cut to length machine, robotics arm raising, palletizer, extrusion machine, motorized self-raising tower system, angle tilt adjustments with double clevis, aircraft docking system, open and close flood gates, metallurgy industry, mining industry, chemical industry, construction industry and irrigation industry.
1.5:1 ratio gearbox t series, 1inch input and 1inch output gearbox, right angle gearbox 1.5 to 1 ratio, right angle gear box, highest speed 90 degree bevel gear box Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
Jt 0.5 t travelling nut screw jack shaft, 0.5 ton jack screw length,500 kg synchronized screw jack,5kn screw jack roller bearings,1000lb screw jack housing casting static lifting force 500 kg, dynamic lifting force 300 kg. lifting screw (spindle) Tr20x5. high speed gear ratio 1/5, medium speed gear ratio 1/10, low speed gear ratio 1/20. upright or inverted translating screw, rotating screw and keyed screw configurations. precision positioning, self locking lead screw which support the loads and hold position without brake mechamism. hand wheel or hand crank manual operation, or single phase or three phases electric motor driven, gear motor driven or dc 24v gear reduction motor drives. thread end, clevis end, plain end and top plate (flange type) for lead screw (spindle) end types. customized various length stroke, when maximum compression load, 100 mm stroke without guidances, 200 mm stroke with guidances. when tension load, 700 mm stroke. single screw jack or multiple screw jacks system arrangements.
1. The document discusses micro-miniature screw jacks that are among the smallest in the world, with lifting forces up to 2.5kN and travel lengths up to 300mm.
2. These screw jacks are used in beverage production lines for height adjustment and can washing, improving output and reducing downtime.
3. Jacton Electromechanical Co. is a Chinese manufacturer of precision screw jacks and lifting systems, serving customers globally across various industries.
Worm gears allow rotational speed and torque to be controlled. They are commonly used for tuning stringed musical instruments, in elevator machinery, and differentials in vehicles. Worm gears provide mechanical advantage through gear reduction, allowing smaller rotational forces to overcome larger resistive loads.
The document describes the JTC-Series Cubic Screw Jack. It has a worm gear driven trapezoidal lead screw that incorporates a heat-treated steel worm and bronze worm gear. It uses ball bearings and seals to support components. The jack housing is made of ductile iron and comes in various configurations for different applications. It can provide lifting forces from 2.5 to 500 kN and linear speeds up to 1.5 m/min. Accessories include motors, wheels, and switches. It is used for applications requiring controlled lifting/lowering such as conveyors and stages.
The document describes JTB-Series Ball Screw Jacks, which use ball screws and ball nuts instead of machine screws to reduce torque requirements. They have worm gears that drive bronze gear sets and ball nuts to translate or rotate lifting ball screws. The ball screw design allows for smoother and more efficient lifting than machine screw jacks. JTB ball screw jacks are used where controlled lifting is required and can be installed as single units or in lifting systems. They come in various configurations for different applications.
worm gear screw jack,motorised worm gear screw jack,manual worm gear screw jack,worm drive screw jack features:
1. Maximum load capacity from 2.5 ton to 120 ton, maximum torque from 18 Nm to 3315 Nm.
2. Lift screw diameter 30 mm to 180 mm, screw pitch 6 mm to 25 mm.
3. Each jack has two gear ratio from 1/6 to 1/36.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
5. Precisely positioning, self-locking acme screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems.
6. Manual screw jack by hand wheel or hand crank, motor screw jack by electric motor or gearmotor driven, or both.
7. 3-phase or single phase motor driven with 1500 rpm input, standard lifting speed 1500 mm/min and 375 mm/min.
8. No standard lift screw stroke, maximum travel stroke 1500mm to 7000mm when tension load.
9. Top plate, clevis end, plain end and threaded end are available.
10. Individually or multiple worm gear screw jacks lifting system are available.
11. Application in steel, pipe, tube, plate, roll forming roller adjustment, feeder straightener rolls adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, coil sheet slitter line, paint coating line, cut to length line, tension levelling line, continuous galvanizing line, beverage production line, foam concrete cutting machine, sanding machine, heavy vehicles mobile lifting platform, bottle monitoring system height adjustment, conveyor adjustment, plate saw angle adjustment, spray infeed conveyor lift system, theatre stage lifting platform, solar tracker, satellite dish antenna azimuth, raising sluice gate, screw scissor lift table, synchronized lifting system, food processing lifting system, extrusion machine, cnc steel leveling machine, blow molding machine, curing oven lifts, bolted tank, steel shuttering concrete beams adjustment, vintage industrial crank desk, solar panel tracking system, railway maintenance lifting jack, damper adjustment, continuous casting, cnc cut to length machine, robotics arm raising, palletizer, extrusion machine, motorized self-raising tower system, angle tilt adjustments with double clevis, aircraft docking system, open and close flood gates, metallurgy industry, mining industry, chemical industry, construction industry and irrigation industry.
Jtc200 worm gear screw lifter,20000kg rotating screw jack,20ton travelling nut screw jack,20 t 4 ft worm gear lift jack,200 kn worm screw lift assembly,20 tonnes cubical gearbox screw jack static load capacity 200 kn, high speed torque 146 n.m, low speed torque 48 n.m. lead screw (spindle) Tr70x10. high speed gear ratio 1/10, low speed gear ratio 1/40. upright or inverted translating screw, rotating screw and keyed screw configurations. precision positioning, self locking lead screw which support the loads and hold position without brake mechamism. hand wheel or hand crank manual operation, or single phase or three phases electric motor driven, gear motor driven or dc 24v gear reduction motor drives. thread end, clevis end, plain end, forked head and top plate (flange type) for lead screw (spindle) end types. customized various length stroke, under tension load, maximum 3000 mm stroke. single screw jack or multiple screw jacks system arrangements.
This document discusses different types of simple machines and mechanisms that make life easier for humans. It describes how wheels were developed over time from log rollers to solid wheels to spoked wheels. It also mentions the use of animal power and levers as simple machines that increase mechanical advantage. Finally, it briefly outlines different types of gears and motions like linear and rotational.
The document provides information about workshop technology 1 and the centre lathe machine. It discusses the objectives, introduction, parts of the lathe machine including the bed, carriage, tool post, and headstock. It also describes workholding devices such as chucks and collets. It explains tool bits including shapes, angles, and materials. Finally, it lists common lathe machine operations such as turning, boring, facing, drilling, knurling, and thread cutting.
Encontrar a informação na Biblioteca do DARQformaticefa
1. O documento fornece informações sobre como utilizar os recursos da Biblioteca do DARQ, incluindo:
2. Como pesquisar e localizar informação nos catálogos e bases de dados disponíveis;
3. Os serviços disponíveis como empréstimo, fotocópias e digitalização de documentos.
Roma Consulting was founded in 2007 to select automotive suppliers for the South American market and support their market development. It has since expanded to provide management consulting services including reorganizations, business plans, and support for foreign companies expanding in Brazil. The company works with automotive suppliers and customers in areas like components, production systems, and logistics. It has supported many international companies entering the Brazilian market.
Portfolio in brief about Aeonex Group. This presentation is basically used to display in public gathering or events to give people idea about our activities and what types of services are being provided by Aeonex.
Este documento presenta el silabo de la asignatura Mundología de la Carrera de Derecho de la Universidad Regional Autónoma de los Andes. El curso busca que los estudiantes conozcan la realidad nacional en el contexto continental y mundial, considerando aspectos sociales, económicos y políticos, así como la incidencia de lo cultural y étnico. Se explican los objetivos, temas, metodología, evaluación y contribución del curso a la formación profesional de los estudiantes de Derecho.
Comic Zeal Comic Reader es una de las mejores aplicaciones para leer cómics y manga, permitiendo la lectura inversa que requiere este genero.
Comic Zeal permite leer comic en los formatos de archivo más comunes para comic como cbz, cbr, zip, rar y PDF. Una de las características más apreciadas en esta aplicación es la capacidad para organizar nuestros comics en carpetas, añadirles etiquetas y ordenarlos por distintos criterios de cara a su visualización y recuperación.
Islam allows fashion but within Islamic rules for both women and men. The document discusses appropriate Islamic dress for women, including hijab, which covers the hair, neck and ears while showing the face. It notes that tight buns or showing too much hair would be against Islamic law. Muslim women's fashion should maintain modesty and cover the chest and aurah (areas that must be covered) as defined in Islamic rules. Creativity in hijab can accentuate beauty as long as it follows Islamic guidelines. The conclusion is that Muslim women can follow trends but not at the expense of obeying hijab requirements or becoming "fashion victims".
self locking jack screw,heavy duty screw jacks,long stroke screw jack,heavy duty linear actuator,heavy duty lifting screw features:
1. Lifting Force from 2.5kN to 500kN. Under max. lifting force, required drive torque high speed from 1.2Nm to 442Nm, low speed from 0.4Nm to 148Nm.
2. Acme screw diameter from 16 mm to 120 mm, screw pitch from 4 mm to 14 mm.
3. Each jack has two gear ratios from 1/4 to 1/56.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
5. Precision positioning, self-locking acme screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems.
6. Hand-operated screw jack by handle or crank, motorised screw jack by by 3-phase or single phase motor or gear motor.
7. No standard acme screw travel length, all acme screw travel length is processed according customers requirements. Maximum permissible from 300mm to 5500mm travel length.
8. Amce screw end fittings include top plate, clevis end, plain end, threaded end and forked head.
9. Application in steel, pipe, tube, plate, roll forming roller adjustment, feeder straightener rolls adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, coil sheet slitter line, paint coating line, cut to length line, tension levelling line, continuous galvanizing line, beverage production line, foam concrete cutting machine, sanding machine, heavy vehicles mobile lifting platform, bottle monitoring system height adjustment, conveyor adjustment, plate saw angle adjustment, spray infeed conveyor lift system, theatre stage lifting platform, solar tracker, satellite dish antenna azimuth, raising sluice gate, screw scissor lift table, synchronized lifting system, food processing lifting system, extrusion machine, cnc steel leveling machine, blow molding machine, curing oven lifts, bolted tank, steel shuttering concrete beams adjustment, vintage industrial crank desk, solar panel tracking system, railway maintenance lifting jack, damper adjustment, continuous casting, cnc cut to length machine, robotics arm raising, palletizer, extrusion machine, motorized self-raising tower system, angle tilt adjustments with double clevis, aircraft docking system, open and close flood gates, metallurgy industry, mining industry, chemical industry, construction industry and irrigation industry.
bevel gear screw jack,high speed screw jack,quick lifting screw jack,gear ratio 1:1 screw jack features:
1. Load capacity 25kN to 500kN. When full load, worm torque high speed 92Nm to 4712Nm, low speed 46Nm to 2828Nm.
2. Lift screw diameter 30 mm to 120 mm, screw pitch 6 mm to 16 mm.
3. High gear ratio 1:1, low gear ratio 2:1.
4. Translating screw, rotating screw, keyed screw configurations in upright or inverted mounting orientation.
5. Difference from worm gear screw jack, driven spindle by spiral bevel gear sets.
5. Manual operated bevel gear screw jack by hand wheel or hand crank, or electrically operated bevel gear screw jack by 3-phase or single phase motor or gear motor.
6. Processing lift screw stroke according to clients needs. Under max. compression load, without guides 250mm to 1000mm stroke, with guides 400mm to 2000mm stroke. Under tension load, max. 1500mm to 5500mm stroke.
7. Lift screw end fittings include top plate, clevis end, plain end and threaded end.
8. Full synchronization bevel gear screw jack system, doesn't require right angle bevel gearbox to transmit torque and power, bevel gear screw jacks are directly connected by line shaftings and couplings.
9. Application in steel, pipe, tube, plate, roll forming roller adjustment, feeder straightener rolls adjustment, adjusting synchronous coil feed lines rolls, precision roller leveler, coil sheet slitter line, paint coating line, cut to length line, tension levelling line, continuous galvanizing line, beverage production line, foam concrete cutting machine, sanding machine, heavy vehicles mobile lifting platform, bottle monitoring system height adjustment, conveyor adjustment, plate saw angle adjustment, spray infeed conveyor lift system, theatre stage lifting platform, solar tracker, satellite dish antenna azimuth, raising sluice gate, screw scissor lift table, synchronized lifting system, food processing lifting system, extrusion machine, cnc steel leveling machine, blow molding machine, curing oven lifts, bolted tank, steel shuttering concrete beams adjustment, vintage industrial crank desk, solar panel tracking system, railway maintenance lifting jack, damper adjustment, continuous casting, cnc cut to length machine, robotics arm raising, palletizer, extrusion machine, motorized self-raising tower system, angle tilt adjustments with double clevis, aircraft docking system, open and close flood gates, metallurgy industry, mining industry, chemical industry, construction industry and irrigation industry.
1.5:1 ratio gearbox t series, 1inch input and 1inch output gearbox, right angle gearbox 1.5 to 1 ratio, right angle gear box, highest speed 90 degree bevel gear box Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
90 degree gear reducer, right angle drive shaft, bevel gear 90 degree 1/2" shaft, bevel gearbox reverse rotation, 5 to 1 gear ratio box with 1" shafts, power transmission right angle gearbox 5:1 Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
Spiral 4 speed in 90 degree drive,1 to 1 ration gearbox, bevel gearbox with one inch shaft,90 deg angle gears drive,90 degree gear drives,gear box 90 deg Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
3 way gearbox,gear ratio 4 spiral bevel box,gearbox ratio 1 to 1,ratio 1-1 bevel gearbox,right angle gearbox 1:1 1500rpm Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
Right angled gearbox drive, direction change gearbox, gearbox input and output directions, 90 deg gear boxes 1 to 1 ratio,1:1 ratio gearbox,industrial 90 degree gearbox Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
speed reducer,gearbox bevel, two direction corss gearbox,gear box 90 degree 2:1 ratio,2-1 90 degree gear box,gear reducers 2 to 1 90 deg Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
gearbox right angle 1:1 ratio, 1 to 1 reverse output bevel gear box, right angle gearbox 1 to 1 ratio, right angle gearbox 1:1 Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
3 output gearbox,90 degree bevel gear drive,90 degrees gear angle drive,spiral bevel right angle gearbox 4:1 Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
Right angle bevel gearbox,micro bevel gear box,spiral bevel gear reducer,gearbox 90 degree aluminium, 4 way bevel gearbox ratio 1:1 Input power from 0.1 Kw to 335 Kw. Transmission torque from 10 Nm to 5713 Nm. 1:1 ratio, 1.5:1, 2:1, 2.5:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 15 mm to 85 mm. 42 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
lifting power of right angle drive boxes, right angle gearbox 1 inch shaft, 1:1 gear ration 2 cross gearboxes,30kW 25 mm shaft cross gearboxes Input power from 0.1 Kw to 157 Kw. Transmission torque from 10 Nm to 1840 Nm. 1:1 ratio, 1.5:1, 2:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 12 mm to 60 mm. 12 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
ratio 1:1 90 degree gearbox 2000 rpm,4 way bevel drive angular transmissions,sawmill three output 90deg gearboxes bevel, 5hp 1 to 1 ratio t drive gear box 1500 rpm Input power from 0.1 Kw to 157 Kw. Transmission torque from 10 Nm to 1840 Nm. 1:1 ratio, 1.5:1, 2:1, 3:1, 4:1, 5:1 gear reduction ratios, custom speed increaser 1:1.5, 1:2, 1:2.5, 1:3, 1:4, 1:5 gear increasing ratio. Input and output speed from 10 rpm to 1500 rpm, custom higher speed 2000 rpm, 3000 rpm. High efficiency from 95% to 98%. Input and output shaft diameter from 12 mm to 60 mm. 12 types input and output shaft arrangements and rotation directions, shafts can be rotated clockwise and counterclockwise rotation directions. Solid shaft, hollow shaft and flange adapter are suitable, custom multiple spine keys. Horizontal mounting, overhung mounting or wall mounting are suitable. Two way gear box, three way gear box, four way gear box and five way gear box are suitable. Low backlash, quiet running, low temperature, high torque features. Application in printing press, rollforming machines, plastic extruder, sewage auger, bonding equipment, metering auger, sewage agitator, newspaper conveyor, bottling equipment, material handling, web finishing, paper conveying, conveyor, cardboard box equipment, packaging, vertical pump drive, sand spreader, residential mower, snow blower, mining equipment, crane, agricultural, grain wagon, harvester, forage harvester, manure spreader, fertilizer spreader and sewage conveyor etc.
The document describes the JTW-Series machine screw jacks. Key points:
- The jacks use heat-treated steel and bronze gears to translate rotation into linear movement via an acme thread lifting screw. Ball bearings and seals support components.
- Configurations include types that translate, rotate the lifting nut, include anti-rotation/backlash features, and different lifting screw ends. Capacities range from 0.5 to 100 tons.
- JTW jacks are self-locking, precisely position loads, and do not require additional braking. They can be driven manually or by motor in various mounting positions.
- Applications include metalworking, mining, construction, and other industries
This document provides specifications for the JTV-series miter gearbox. The gearbox has a cubic, machined housing with average efficiencies of 95-98%. It can operate in both directions smoothly with low noise and vibration. Spiral bevel gears are made of hardened alloy steel and precision processed to provide rigidity and high precision transmission. The gearbox is available in various configurations with 1-4 shafts and maximum torques ranging from 19Nm to 1841Nm.
Jacton Industry Co., Ltd is a company that provides lifting systems solutions including screw jacks, miter gearboxes, and lifting systems. They can be contacted via their phone number, Skype, email, or website for inquiries about custom screw jacks, custom acme screws, or their JT-Series miter gearbox product line.
The JT-Series Acme Screw Jacks incorporate heat-treated steel and bronze gears to translate or rotate an acme threaded lifting screw, supporting loads without backdriving. They are available in sizes from 0.5 to 100 tons and various configurations, and can lift at speeds up to 3 m/min. JT-Series jacks are commonly used for controlled lifting, lowering, pushing and pulling in applications like steel mill roller adjustment. They are generally maintenance-free and accessories allow for electric, hand wheel, or combined motor operation.
we are professional 1 ton solar actuators and motorized jacks, 5 ton solar tracking jacks and actuators, 10 ton solar tracking drive jacks, 20 ton solar tracking drive actuators for solar panel tracker system in canada manufacturers and suppliers in China.
we are professional Hand wheel manual operated 3 ton worm gear screw jacks lifting devices 300mm for nc precision slitting production line automatic slitter machine in australia manufacturers and suppliers in China.
The document describes 3 ton worm gear screw jacks lifting devices that are 300mm in travel stroke and have a maximum load capacity of 3 tons. The screw jacks are hand wheel operated and are being offered for use in NC precision slitting production lines and automatic slitter machines in Australia. The screw jacks have a high gear ratio of 1/6 and include additional protective piping.
The document advertises lightweight micro-miniature screw jacks from 2.5kn to 10kn lifting force for aluminum can production lines in the UK. It provides details on 4 screw jack models ranging from 2.5kn to 10kn lifting force that are inverted type, have a traveling screw configuration, 100mm lift height, and protective tubing. The screw jacks and other products like gear boxes, couplings, motors, and accessories are suitable for applications that require height adjustment and lifting on conveyor lines.
Jacton Electromechanical Co. produces precision screw jacks and gear lifts for precision straighteners used in the USA. They offer inverted translating worm gear screw jacks in various tonnage ratings from 1 to 10 tons with stroke lengths from 80 to 300mm. These screw jacks feature customized threaded ends, double input shaft worms, and protective tubes to prevent rust. Jacton also produces other screw jack and gear products for industrial machinery.
we are professional 5 ton upright traveling nut machine screw jack, 5t load acme nut screw jack for tunnel freezer top lid lifting in food processing lines in united kingdom manufacturers and suppliers in China.
we are professional Self locking jack screw driven scissor mechanism, worm gear screw jack style scissor lift system, acme screw jack lifting system for scissor lift table in singapore manufacturers and suppliers in China.
The document discusses screw jack lifting systems for scissor lift tables. It describes how ball screw or acme screw jack lifting systems can provide self-locking, precise positioning, uniform lifting speed, synchronization, easy installation and maintenance for scissor lifts. It then provides details about a specific order from a Singapore customer for a screw jack scissor lift table with two screw jacks driven by a 3-phase motor.
we are professional 25kn load capacity machine screw jacks 300mm stroke for continuous pu panel production lines in thailand manufacturers and suppliers in China.
The document describes 25kn load capacity machine screw jacks with 300mm stroke that are used in continuous sandwich panel laminating machines for raising and lowering caterpillar plates. It provides details on two models, the JTW-2.5T-IS-300-H-III-C-PP and JTC25-IS-500-H-I-C-PP, which have load capacities of 2.5 tons and 25kN respectively. It also includes links to the company's website pages on various screw jack products and related parts.
The document discusses a theatre lifting stage jack system for a theatre in France. It includes specifications for a lifting platform that is 15000x10000mm carrying a total load of 2400kN. The system would include 6 screw jacks each with a load capacity of 400kN and 628mm of travel, along with 3 miter gearboxes to connect the screw jacks. An electric motor with a gear reducer is also specified to drive the screw jack system at a speed of 37.5mm/min. Parts for the system like screw jacks, couplings, linking bars, bearings, motors and gearboxes are also referenced.
5 Ton Machine Screw Jacks, 20 Ton Upright Translating Screw Jacks For Lift Different Rotors Of Horizontal Axis Balancing Machines In Russia
This balancing machine is a dynamic soft bearing machine with a horizontal axis.
It has an AC motor with variable speed, which drives the balancing machine through a belt drive system.
The machine can be mounted on a reinforced concrete basement or rigid table for better operating conditions. Self-installing rollers, ac frequency inverter, 5t or 20t screw jacks for for smooth and non-shock rotor stop.
20 Ton Upright Translating Screw Jacks
Model: JT-20T-US-350-L-I-C-N
* Static loading capacity max. 20t, spindle tr64x8
* Upright mounting, translating screw configuration
* Travel stroke 350 mm
* Low worm gear ratio 1/32, 0.25mm per revolution of input shaft
* Double input shaft, no additional accessory
5 Ton Upright Translating Screw Jacks
Model: JT-5T-US-300-L-I-C-N
* Static loading capacity max. 5t, spindle tr38x6
* Upright mounting, translating screw configuration
* Travel stroke 300 mm
* Low worm gear ratio 1/24, 0.25mm per revolution of input shaft
* Double input shaft, no additional accessory
Jacton Electromechanical Co.,Ltd produces 5 ton and 20 ton upright translating screw jacks for lifting different rotors on horizontal axis balancing machines in Russia. The balancing machine has an AC motor with variable speed that drives the machine through a belt system. It can be mounted on a concrete base or table. The screw jacks provide smooth, non-shock stopping of rotors and include features like travel stroke, worm gear ratio, and double input shafts. Other products include various screw jack models, gear boxes, hand wheels, motors, and accessories.
The document discusses a DC 24V geared motor screw jack actuator used for hoisting water gates in agricultural industry in Malaysia. The screw jack has a 10 ton load capacity, 7 foot stroke length, and is powered by a 24V DC motor with a 1/4 gear reduction ratio. It includes protective tubing, bellows boots, and limit switches. The company, Jacton Electromechanical Co., also produces other screw jacks and gearboxes.
UK Live Centre In Electron Beam Welding Machines Height Adjustment By Cast Iron Crank Handle Operated Small Jack Screw Lift Mechanism
UK customers new design, use our micro-miniature screw jacks with hand wheel manual operation for height adjustable live centre in electroc beam welding machines.
Upright Travelling Nut Rotating Screw Jack Model: JTC2.5-UR-300-H-VI-A-HW
1. Jtc2.5 model, lifting screw tr16x4, max. load capacity 2.5kN
2. Upright mounting, travelling nut rotating screw configuration
3. 300mm stroke with high worm gear set ratio, 1mm per turn of hand wheel
4. Plain end fitting 12mm matching top ball bearing
5. Single input worm shaft, left side
6. Accessory: 100mm diam. hand wheel, bronze travelling nut with mounting 6 holes
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2. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com2
Contents
General Information -------------------------------------------------------------------------- 3
Configurations---------------------------------------------------------------------------------- 4
Permissible Buckling Load----------------------------------------------------------------- 5-6
Specifications
1. JT-0.5T, JT-1T, JT-2T ---------------------------------------------------------------------------- 7
2. JT-3T, JT-5T, JT-10T ----------------------------------------------------------------------------- 8
3. JT-15T, JT-20T, JT-30T -------------------------------------------------------------------------- 9
4. JT-40T, JT-50T, JT-100T------------------------------------------------------------------------- 10
Selection Guides
1. Jack Brand---------------------------------------------------------------------------------------- 11
2. Load Capacity ------------------------------------------------------------------------------------ 11
3. Screw Configurations & Mounting Orientation ------------------------------------------------- 11
4. Travel Stroke-------------------------------------------------------------------------------------- 11
5. Gear Ratio ---------------------------------------------------------------------------------------- 11
6. Screw End Fittings-------------------------------------------------------------------------------- 12
7. Worm Shaft Input Type--------------------------------------------------------------------------- 12
8. Accessories --------------------------------------------------------------------------------------- 12-13
Selection Example ----------------------------------------------------------------------------- 14
Dimensions
1. Model JT-0.5T ------------------------------------------------------------------------------------ 15
2. Model JT-1T -------------------------------------------------------------------------------------- 16
3. Model JT-2T -------------------------------------------------------------------------------------- 17
4. Model JT-3T -------------------------------------------------------------------------------------- 18
5. Model JT-5T -------------------------------------------------------------------------------------- 19
6. Model JT-10T ------------------------------------------------------------------------------------- 20
7. Model JT-15T ------------------------------------------------------------------------------------- 21
8. Model JT-20T ------------------------------------------------------------------------------------- 22
9. Model JT-30T ------------------------------------------------------------------------------------- 23
10. Model JT-40T ------------------------------------------------------------------------------------ 24
11. Model JT-50T------------------------------------------------------------------------------------- 25
12. Model JT-100T ----------------------------------------------------------------------------------- 26
Application Examples ------------------------------------------------------------------------- 27
Operation Manual ------------------------------------------------------------------------------- 28-32
Frequently Asked Questions ---------------------------------------------------------------- 33-36
Company History -------------------------------------------------------------------------------- 37
Contact Us ----------------------------------------------------------------------------------------- 38
3. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com3
General Information
Standard Screw Jack
* Model JT-0.5T, JT-1T, JT-2T, JT-3T, JT-5T, JT-10T, JT-15T, JT-20T, JT-30T, JT-40T, JT-50T, JT-100T
* Static load capacity from 0.5ton to 100ton, dynamic load capacity from several kilograms to 26ton
* Self locking acme screw, precise positioning, uniform lifting speed
* Translating screw, anti-rotation keyed screw and rotating screw configurations
* Upright mounting, inverted mounting, double clevis pivot mounting
* Top plate, threaded end, clevis end and plain end fittings
* Manually operated, electrically driven or both
* Individual or multiple screw jack lift system arrangements
* Each jack has three worm gear ratios, high speed, medium speed, low speed
* No standard travel length, all screw jack stroke produced following your needs
Jack Screw Configurations
Translating Screw Design
A translating screw jack has a jack screw translates through the jack housing, When
the jack screw is held to prevent rotation, the jack screw will move linearly through
the housing to push or pull the load.
Rotating Screw (Travel Nut) Design
A rotating screw jack has a jack screw which turns moving a travel nut. The jack
screw is fixed to the worm gear. The load is attached to the travel nut, to move along
the jack screw.
Keyed Screw (Anti-Rotation) Design
The jack screw of a translating jack must be attached to the load which prevents the
jack screw from rotating. Otherwise, the jack screw and the load will turn and not
translate. A keyed screw jack can prevent jack screw rotation, which has milled
keyway along the length of the jack screw. A matching key is fastened to the cover
of the jack, which will eliminate jack screw rotation.
The keyway in the screw causes greater than normal wear on the internal drive worm
gear threads, somewhat reducing screw jack lifespan.
4. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com4
Configurations
Self Locking Acme Screw
1. Acme screw rotary cutting processing machine, high precision
2. 40Cr or C45 steel material, customized stainless steel screw
3. Minimum friction for smooth operation and longer life
4. Self-locking, load holding without brake mechanism and locking system, accurate positioning
5. Minimum axial backlash
Tapered Roller Bearing
1. Preloaded for reduced assembly spring rate and high thrust load
2. Provides excellent support for side loading and horizontal applications
3. Maintains exact gear alignment under separating and thrust forces
4. Bearing sized for endurance and maximum loading conditions
Bronze Worm Gear
1. Precison hobbing machine for processing
2. Phosphor bronze 10-1 or Tin bronze ZCuSn10Pb1 10-1 material, high hardness, excellent wear
resistance
3. Worm gear center design for long life
Worm Shaft
1. Worm rotary cutting processing machine and grinding machine processing, high precision
2. High frequency heat treatment of worm, 40Cr or C45 steel material, high hardness, customized
stainless steel worm shaft
Rugged Housing
1. CNC precision automatic lathe processing
2. Cast iron or ductile cast iron material, customized alloy steel material
Grease Seals
1. Double lip grease seal, prevent grease leak
5. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com5
Concerning the variety of models and loading
methods at screw end, as well as screw length
and permissible buckling load, please refer to
the following charts or formula
Pcr = nπ2
E(K/L)
2 ·
A
·
a
n: shaft end support factor (1/4, 1, 2)
E: lengthwise elastic modulis 2.1x104
kgf/mm
2
K: minimum auxiliary radius k = d1 / 4
d1: thread root diameter 15 ~ 84mm
L: shaft support length, as demand
A: thread root sectional area A = π(d1) 2
/ 4
a: safety factor a = 0.25
thread root diameter datas
0.5T(15) 1T(19) 2T(20)
3T(26) 5T(32) 10T(37)
15T(42) 20T(54) 30T(63)
40T(68) 50T(76) 100T(84)
Permissible Buckling Load
n = 1/4
6. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com6
n = 1 n = 2
Example:
Pcr = nπ
2
E(K/L)
2 ·
A
·
a
Pcr: 1000kg (load)
L: 1000mm (length)
Jack fixed shaft terminal free n=1/4
Pcr = 1/4 x 3.142
x 21000kgf/mm
2
x ( d1 / 4L)
2
x 3.14x (d1)
2
/ 4 x 0.25
Pcr = 1/4 x 3.143
x 21000kgf/mm
2
x d1
4
/ 16
2
L
2
1000kg = (3.14
3
x 21000kgf/mm
2
x d1
4
) / 16
2
x 1000
2
mm
2
x 4
d14
= (16
2
x 1000
2
mm
2
x 4 x 1000kg) / (3.14
3
x 21000kgf/mm
2
)
d14
= 1575040.5mm
4
d1 = 35.426mm
thread root diameter d1 = 35.426mm
Following thread root diameter datas JT-10T(37) is suitable, so select JT-10T model jack.
11. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com11
JT - 5T - UR - 300 - H - II - C - HW
1 2 3 4 5 6 7 8
Selection Guides
1. Jack Brand
JT: “Jacton” brand screw jack
2. Load Capacity
Frame No. 0.5T 1T 2T 3T 5T 10T
Load capacity 0.5 ton 1 ton 2 ton 3 ton 5 ton 10 ton
Frame No. 15T 20T 30T 40T 50T 100T
Load capacity 15 ton 20 ton 30 ton 40 ton 50 ton 100 ton
3. Screw Configuration & Mounting Orientation
US: upright translating screw UK: upright keyed screw UR: upright rotating screw
IS: inverted translating screw IK: inverted keyed screw IR: inverted rotating screw
4. Travel Stroke
300, means travel stroke 300mm
No standard travel stroke, all screw jack stroke produced following your needs
5. Gear Ratio
Each jack model has three gear ratios
H: high gear ratio M: medium gear ratio L: low gear ratio
12. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com12
Frame No. 0.5T 1T 2T 3T 5T 10T 15T 20T 30T 40T 50T 100T
H 1/5 1/5 1/5 1/6 1/6 1/8 1/8 1/10 1/12 1/12 1/7 1/8
M 1/10 1/10 1/10 1/12 1/12 1/16 1/16 1/20 1/18 1/18 1/14 1/16
L 1/20 1/20 1/20 1/24 1/24 1/32 1/32 1/40 1/36 1/36 1/28 1/32
6. Screw End Fittings
I: Top Plate II: Clevis End III: Plain End IV: threaded End
7. Worm Shaft Input Types
B: right side worm shaft
A: left side worm shaft
C: double worm shaft
M4: right side motor flange with worm shaft
M2: right side motor flange without worm shaft
M3: left side motor flange with worm shaft
M1: left side motor flange without worm shaft
8. Accessories
N: no accessory PP: protective pipe BB: bellows boot BG: miter gearbox
HW: hand wheel EM: electric motor GR: gear reducer LS: limit switches
SN: stop nut DC: digital counter SP: swivel plate FC: flexible coupling
CS: connecting shaft SM: swivel mounting base PB: pillow block bearing
14. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com14
Selection Examples
Examples: 6Ton load, upright mounting, lifting speed 375mm/min, travel stroke 750mm, full guided,
top plate end, four screw jacks synchronized lifting system.
Screw Jack Selection
1. From driven machine factor f1max = 1.3, Lifting system total load = 6 x 1.3 = 7.8Ton, Each jack load
= 7.8 / 4 = 1.95Ton. Upright mounting, means compression load.
Following the information of 1.95ton load each jack, 375mm/min (6.25mm/s), we can check 6th
page
specifications, select JT-5T jack model, lifting screw diameter 38mm, pitch 6mm.
2. Following 375mm/min travel speed, worm gear raio i = (1500rpm x 6mm pitch) / 375mm/min = 24
3. Following travel stroke 750mm, full guided, we check permissible buckling load (n=2) charts,
750mm stroke is within the range of bending length.
Screw jack model: JT-5T-US-750-L-I-C-N
Bevel Gearbox Selection
Power = (7800kg x 0.375m/min) / (6120 x 0.15) = 3.19Kw.
From above arrangement factor, four screw jacks synchronized lifting system factor is 0.85. So
system required power = 3.19 / 0.85 = 3.75Kw.
Input torque = 9550 x 3.75Kw / 1500Rpm = 23.875Nm.
Check bevel gearbox JT series catalogue with 1:1 ratio, select JT-19 gearbox is enough.
Calculation Formulas
1. Total equivalent load kg = loadmax x f1
2. Worm gear ratio = (input rpm / travel speedmm/min) x pitchmm
3. Required power = (total equivalent loadkg x tavel speedm/min) / (6120 x ηeff.)
4. Required torque = 9550 x powerkw / input rpm
Driven Machine Factor (f1)
Arrangement Factor
27. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com27
Application Examples
JT series screw jack is application in steel mills roller adjustment, pipe mills roller adjustment, tube
mills roller adjustment, roll forming mills roller adjustment, plate mills roller adjustment, rolling mills
rollers adjustment, powered feeder straightener rolls adjustment, roller system adjustment, adjusting
synchronous coil feed lines rolls, precision roller leveler, cold roller adjustment, hot roller adjustment,
coil handing, semi-finished product handling, brush adjustment belt cleaning, zinc pot lifting
mechanism, air knife system adjustment, roll pass system, sizing stand, molten steel pot lifting
system and anywhere required raising, lowering, pulling, pushing and rolling linear motions.
For examples>>>>>> powered feeder straightener rolls adjustment
Inverted type screw jacks are used for straightener rolls adjustment for superior alignment and
reduced operator effort. All rolls are individually adjusted.
Six jacks or eight jacks are used in a machine, regular jacks models:
1. JT-1T-IS-100-M-IV-C-PP
2. JT-2T-IS-100-M-IV-C-PP
3. JT-3T-IS-100-M-IV-C-PP
4. JT-5T-IS-120-M-IV-C-PP
5. JT-10T-IS-150-M-IV-C-PP
Models Explanation:
1T, 2T, 3T, 5T, 10T: jacks models
IS: inverted translating screw
100, 120, 150: unit mm, it’s travel length
M: medium worm gear ratio, 0.5mm travel per full turn of worm
IV: threaded end
C: double worm shaft
PP: protective pipe
28. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com28
Operation Manual
Read this manual before installation or operation of screw jack. Failure to understand this manual,
install or operate screw jack properly could result in damage to the Jack and or serious personal
injury.
Do not exceed the screw jack ratings including design load, travel, and input speed. Install, align and
shield all moving parts properly. Proper machinery installation practices should be followed. Safety
codes for mechanical power transmissions apparatus are to be followed. Check for and adhere to all
applicable safety codes. Bolts should be sized to fit the screw jack base mounting holes, at least
grade 5 and tightened to the appropriate torque. Mounting bases should be flat and sufficiently strong
to support the load on the jack. Properly lubricate and maintain the screw jacks. Use the operation
manual only for the intended application. Failure to install, operation or maintain screw jacks could
result in product failure and personal injury.
This screw jack operation manual is applicable to all screw jacks models. Information represents
typical configuration and may different slightly from the actual screw jack being installed or repaired.
Notices Before Installation
Your screw jack was manufactured to high quality standards and is designed to provide long service
life. Certain safety measures and procedures must be followed in handling, installing and servicing
the screw jack to insure long trouble free service.
1. Any obvious or suspected damage to screw jack during transport from the factory must be
immediately taken pictures and reported to Jacton corresponding sales and the carrier, The sales will
submit this problem to Jacton engineers teams immediately.
2. Upon delivery all of the screw jack should be inventoried to determine if shortages exist. All
shortages must be immediately taken pictures and reported to Jacton corresponding sales and the
carrier, The sales will submit this problem to Jacton QC teams and warehousers immediately.
3. Installation, maintenance and safety instructions must be given to personnel directly responsible
for the installation, maintenance and operation of the jack.
Caution!
Screw jacks are normally self-locking. Vibration could cause a screw jack to self-lower or creep.
Stop nut is used to prevent lifting screw moving out of the screw jack base. Jacton standard screw
jacks are not equipped with stop nuts unless special requirements in your purchase order.
Screwjacks are not meant for personnel support. All applications designed for personnel support
must be approved by Jacton engineers team.
29. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com29
Installation Instructions
1. Be certain that the screw jack load capacity exceeds the maximum load that may be applied to it.
2. Be assured the screw jack input speed is not be exceeded. Specifications show the max. speed.
3. The foundation for the screw jack should be rigid enough to maintain correct alignment with
connected machinery and have sufficient strength to support the maximum load.
4. The foundation should have a flat mounting surface in order to assure uniform support for the
screw jack. Be assured the opening in the foundation for the protective pipe or the lifting screw is as
small as possible in order that the jack is supported over the greatest possible area.
5. Check the method of stopping the screw rotation, maybe translation will occur is sufficiently strong.
When individual screw jack application without be guided, will need keyed screw jack.
6. It is extremely important that the screw jack be installed so that the lifting screw is perfectly plumb
and all connecting shafts are aligned with the worm shaft.
7. After precise alignment, each member must be securely bolted and if possible doweled in place.
Doweling will assure exact repositioning if ever removed. It is essential that a gear unit be securely
bolted down to the foundation using bolts of proper diameter to fit the mounting holes.
8. After the screw jacks, bevel gearboxes, couplings, connecting shafts are installed and aligned,
there should be no signs of binding or misalignment.
9. Couplings and connecting shaft are the responsibility of the customer and are not provided by
Jacton side, unless special requirements in your purchase order.
10. Caution must be taken when operating your jack at either extreme of travel. If possible, hard
external stop nuts should be provided.
11. If operating at the upper limits of the screw jack capacity, don’t stop the downward travel of the
jack by running the lifting screw attachments or the load against the gearbox without checking with
Jacton side, as serious damage to the internal mechanism may result.
12. The customer is responsible for providing mechanical stops and limit switches for control of the
prime mover. None are included unless special requirements in your purchase order. If limit switches
are furnished by Jacton, normally, we install limit switches for controlling full travel stroke, also
following customers special requirements.
The foundation of the screw jack is critical to insure alignment. Mount the jack and check that the axis
of the lifting screw is parallel to the movement of the load and centered with respect to the load. Shim
under the base to achieve this if needed. Both eccentric load or side load will cause premature wear
30. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com30
and possible bending and failure of the screw jack. Once the alignment is correct hand tighten the
mounting bolts.
The next step is to align the input shaft with the worm shaft of the screw jack. This alignment can be
just as critical to proper operation. Test the alignment by rotating the shafts by hand and fully extend
the lifting screws.
If the hand operation turns freely and the other components of the system are in alignment, tighten
the mounting fasteners and attach the load to the screw jack. Start-up should be and break-in periods
of several minutes with careful observation are required. Any vibrations, binding or excessive
amperage draw of motors is reason to shut down and repeat the entire alignment procedure.
Finally the lifting screw should be re-greased with a light film, and the screw jack gearbox be checked
that it is full of grease.
Troubleshooting
Your screw jack will perform satisfactorily if the suggestions described in the booklet are carefully
followed. It is estimated the approximately 98 percent of screw jack failures can be attributed to
improper lubrication, misapplication and misalignment.
Trouble Inspection Point Solutions
1. Jack Overload
Reduce load or replace with unit of
sufficient capacity
2. Improper Support
Jack should be supported over entire
base area, not just at bolt hole locations.
3. High Shock Select larger Unit
Gearbox Failure
4. Uneven Bolting Torque Take up evenly on mounting bolts
1. Type of Coupling
Rigid Couplings can cause shaft Failure.
Replace with coupling which will provide
adequate flexibility and lateral float
2. Coupling Alignment Re-align as required
3. Excessive Overhung Load Check Jack for allowable loads
4. Jack Overload See Gearbox failure #1
5. Shock Loading Install coupling capable of absorbing
shock and if necessary replace with jack
of sufficient capacity. Shock loads can
significantly increase apparent dead
weight
Worm Shaft Failure
6. “Ganging” Jacks If several jacks are in-line, the worm
shaft of the first jack will be subjected to
the combined torque of all the jacks. If
this torque exceeded 300% of the rated
input torque you must replace with a
larger jack
31. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com31
1. Jack Overload See Gearbox failure #1
2. Coupling Alignment See Worm Shaft Failure #2
3. Excessive Overhung Load See Worm Shaft Failure #3
4. Coupling Lateral Alignment
Adjust spacing between connecting
shafts to relieve end pressure
5. Bearing Adjustment Bearings must be preloaded
6. Bearing Lubrication
Proper levels and grade must be
maintained at all times
Bearing Failure
7. Shock Loading See Worm Shaft Failure #5
1. Jack Overload See Gearbox failure #1
2. Load Screw Alignment Lifting Screws must be perfectly plumb
3. Lubrication See Bearing Failure #6
4. Duty Cycle Limit Exceeded
Reduce the number of cycles per hour
or reduce the load. Contact factory for
the maximim allowable cycles per hour
Worm Gear Failure
5. Side load Eliminate side load
1. Jack Overload See Gearbox failure #1
2. Load Screw Alignment See Worm Gear Failure #2Lifting Screw Failure
3. Side Load See Worm Gear Failure #5
Lubrication
The lubricant should not be corrosive to worm gear, ball or roller bearings and must be neutral in
reaction. The lubricant must not contain any contamination that may be detrimental to operation of
the screw jack. The lubricant must have resistance to oxidation and must be non-channeling.
Operating temperatures must be considered when selecting a lubricant for a screw jack. We
recommended the following extreme pressure greases or their equivalents. For applications outside
these limits contact Jacton.
The screw jack normal working temperature -20 deg. C ~ +80 deg. C, Filled with NLGI EP 1 or 2
grade grease, Special working temperature, need special grease, please contact Jacton.
Jacton screw jacks are lubricated prior to shipment. Lubrication inspection is recommended at
regular intervals. Intervals are determined by the duty cycles of the screw jack, but should be
performed a minimum of once every two months.
Each screw jack is furnished with a grease nipple. The screw jack should be filled with grease until
lubricant begins to seep from the lifting screw opening. For the screw jack is equipped with boots,
remove the boot at the jack before you check for proper grease levels. Severe operating conditions
may require more frequent lubrication.
Lifting screw must be checked regularly to insure that they are adequately lubricated. This is
especially critical for the rotating design screw jacks where no lubrication is deposited because the
lifting screw does not translate through the screw jack gearbox into the protective pipe.
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Maintenance Instructions
All mounting bolts must be retightened after a short period of operation. Under extreme operating
conditions, the wear on the worm gear must be checked at shorter intervals, depending on the
power-on time, by inspecting the play in the thread. The worm gear must be replaced if the axial
backlash with a single-start thread is more than one-quarter of the thread pitch. After checking the
wear, screw jack should be re-assembled by a fitter. Check carefully that rotation is smooth and light
and free from axial play.
The Lifting screw must be kept free of contaminants and should be lubricated. If possible, lifting
screw should be booted or returned to retracted position when it's not in use.
Along with periodic inspection, check the alignment of the lifting screw to the load. Misalignment will
cause premature wear and possible failure. The load should be centered on the axis of the lifting
screw and motion should be parallel to the axis of the lifting screw. The power output shafting must
be aligned with respect to the screw jack input shaft. Binding during rotation will cause premature
wear. After the screw jacks, connecting shafts, couplings, bevel gearboxes and gear reducers are
coupled together in a system, it should be possible to rotate the shafts to fully extend the unloaded
screw jacks by hand.
The screw jacks are lubricated by the Jacton and are ready for operation on delivery. The translating
screw configurations must be lubricated via their grease nipples with one of the greases specified
below at intervals of 30 – 50 operating hours. The lifting screw should be cleaned and greased at the
same time. We recommend that the screw jack gearbox be cleaned to remove old grease and refilled
with fresh grease after every 600 operating hours or every 18 months. The screw jacks can
disassembly and assembly easily:
1. dismount the screw jack and clean.
2. disassemble the lifting screw and lifting screw protective pipe (only for translating screw).
3. Remove locking screws for screw jack gearbox cover.
4. Wash out the screw jack gearbox and components with a suitable wash medium.
5. Refill with grease
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What is the difference between an acme screw jack and a ball screw jack?
The acme screw jack uses an acme threaded screw that is completely self-locking, meaning it will
hold its position without a brake mechanism or locking systems. Ball screw jack use ball screws to
convert rotary motion to linear movement, and require approx. 1/3 the horsepower compared to a
acme screw jack. Due to the efficiency of the ball screw, brake mechanism must be used to stop and
hold the load screw in position. Brake mechanism is also recommended for use on any screw jack if
vibration is present.
Why use an acme screw jack and a ball screw jack?
One type of screw jack is usually better suited to the operating conditions. Typically, fast travel speed
and frequent cycle times may be more suited to a ball screw jack, particularly as the load approaches
the rated capacity of the screw jack. High load at slow travel speed, less frequent cycles and the
ability to hold the load in position when the system is at rest may be better suited for an acme screw
jack.
How do I operate the screw jack?
Most screw jacks are operated by electric motor, but air motors and hydraulic motors can also be
used. Hand wheel or crank handle can be used for manual operation.
Can I use a larger motor than required in specifications?
Yes, but it is not recommended. The screw jack or jack system components could be
damaged if an oversize motor is used. Travel limit switches control must be used for each end of
travel to stop the motor. If using solid mechanical stops, screw jack components can be subject to
shock load conditions and oversize motors can cause catastrophic failure of stops and other
components.
How do I stop the screw jack at the travel limits?
Limit switches or other controls must be used to shut off the motor when the screw jack has reached
its full extended or retracted position. Solid mechanical stops are not recommended. Their continued
use can cause severe damage to the screw jack.
Can different size screw jacks be used in the same system?
Yes, as long as the equal travel length per full turn of worm shaft input. This is sometimes done to
accommodate varying load conditions.
What is the screw jack system efficiency?
2 screw jack system efficiency is 95%, 3 screw jack system efficiency is 90%, 4 screw jack system
efficiency is 85%, 6 screw jack system efficiency is 80%. Bevel gearbox efficiency is 98%. Single
reduction helical gear reducer efficiency is 98%, Double reduction helical gear reducer efficiency is
97%. Worm gear reducer efficiency is horsepower out x 100 / horsepower in
Frequently Asked Questions
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What is the maximum input speed?
Jacton screw jack can be run at 1500Rpm. A gear motor, helical gear reducer, or a worm gear
reducer is used to reduce the input Rpm to the screw jack to provide the required travel speed of the
lifting screw. Many Jacton screw jacks can be driven directly by 1500Rpm and 900Rpm electric
motors. Electric motors and reducers are available mounted directly to many Jacton screw jacks
models.
What causes heat build up in the screw jack?
The screw jack is a mechanical gearbox assembly. The friction of the worm and worm gear, lifting
screw and worm gear, bearings and seals generate heat while the screw jack is operating. The
combination of travel, loading, and input speed all affect the temperature rise of the screw jack.
Jacton screw jack sizing calculations take these variables into account to insure that you select the
right screw jack model for your application.
What is the screw jack load capacity and travel?
This is based on the relationship of the lifting screw diameter and the length. Lifting screws in tension
are rated for the full capacity of the screw jack, regardless of length, providing they do not rotate
faster than the critical speed. For the lifting screw in compression, capacity is limited by the screw
jack’s permissible buckling load. The permissible buckling load of a lifting screw is reduced as the
lifting screw gets longer. Use the maximum extended lifting screw length when using the permissible
buckling load charts to determine screw jack load capacity.
How do I determine the full-extended lifting screw length?
The extended lifting screw length is normally equal to the travel stroke. If screw jack is equipped with
bellows boot and stop nut, must be added the bellows boot full retract length and the addition stop
nut or special closed height. These must be increased the extended lifting screw length. For inverted
screw jack, the thickness of the mounting structure must be included. This total extended lifting screw
length should be used when determining the permissible buckling load of the screw jack.
Should the load being positioned be guided?
It is highly recommended that the load be guided, however, it is not necessary. A guided system will
provide more column stability and allow longer screw jack travel. Column length is greatly reduced on
unguided systems. External load forces common with unguided systems are detrimental to the life
and operation of the screw jack.
Can the screw jack withstand side loading or a bending moment?
Yes, but this is not recommended. Consult Jacton if this condition will be present. These types of
loads apply greater forces on the screw jack and housing assembly causing premature wear. Guides
are highly recommended and should be used to eliminate side and bending loads.
Can the screw jack withstand shock loading?
This is not recommended. Oversized screw jacks are required to handle shock loads. Solid thrust
bearings are also available in many screw jack models when constant vibration and shock are
present in an application.
35. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com35
What is the difference between upright and inverted screw jack configurations?
The difference between an upright and an inverted screw jack is the location at which the lifting screw
exits the jack relative to the jack gearbox. For example, an upright screw jack’s lifting screw exits the
jack opposite the gearbox. An inverted screw jack’s lifting screw exits the jack on the same side as
the gearbox. The choice between inverted and upright screw jack is dependent upon the application.
Note: An upright screw jack mounted upside down is still referred to as an upright screw jack.
How is the linear travel speed calculated?
Each screw jack has an inherent number show lifting screw travel per full turn of worm shaft input.
The result of the screw jack is equal to the lifting screw pitch divided by worm gear ratio. For
example, JT-10T model screw jack, screw pitch 8mm, high worm gear ratio 1/8, the lifting screw
travel is 1mm per full turn of worm shaft input. If 900Rpm is applied to the worm shaft, the linear
travel speed is 900Rpm multiplied by 1mm/r, equal to 900 millimeter per minute.
Are screw jacks lubricated prior to shipment?
All Jacton worm gear screw jacks and ball screw jacks are lubricated with an extreme pressure NLGI
grade #1 or 2grease before leaving the factory. Bevel gear screw jacks are lubricated with NLGI
grade #1 grease or VG220 gear oil. The upper bearing and jack screw are grease lubricated while
the remaining internal components are oil lubricated. They are grease lubricated prior to shipment.
What electric motors options are available?
Electric motor options vary among product lines. Customers can use AC 3-phase motor, AC
single-phase motor, DC motor. Standard voltage of China is 380V/220V, 3-phase, 50Hz, or 220V,
single-phase, 50Hz. Customized international voltage motors like America 110V-single phase-60hz,
240V/480V-three phase-60Hz, other voltages 230V/240V-single phase-50hz, 400V/415V/440V-three
phase-50hz etc.
Are screw jacks corrosion resistant?
Stainless steel screw jacks are inherently corrosion resistant. All exposed surfaces are stainless steel
and aluminum bronze. Most other screw jacks can be modified with special finishes, coatings, and
seals.
Can bellows boots be supplied for an screw jack model with inverted screw?
Yes, but allowance must be made in the length of the lifting screw for both the closed height of the
boot and structure thickness. Since we can make no provision for attaching a boot on the underside
of your structure, we suggest that a circular plate similar to the lifting screw top plate be welded or
bolted to the bottom of your structure supporting the screw jack, thereby making it possible to use a
standard bellows boot.
Is there backlash between the lifting screw and worm gear?
Yes. This is necessary to allow for sliding or rolling action of the lifting screw through the worm gear.
Anti-backlash nut screw jack is available when the backlash needs to be minimized. Input torque
requirements are greater for anti-backlash nut screw jack.
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How is the lifting screw protected?
Standard translating screw jack is fitted with a lifting screw protective pipe that stores the lifting screw
when the screw jack is in the closed position. Bellows boot is available and recommended to protect
the lifting screw in the extended position. Double bellows boots are required for rotating screw jack
with traveling nut.
How do I attach the load to be positioned to the lifting screw?
For translating screw jack, the lifting screw has a standard threaded end that can be used to attach
the load, top plate, clevis end, plain end and forked head are also available. For traveling nut design,
the traveling nut has a flange with mounting holes. The screw jack gearbox has a mounting base and
is also available with a clevis mount for double clevis requirements.
Will the lifting screw rotate?
Yes. You need to prevent the lifting screw from rotating to produce linear motion. The lifting screw will
not rotate in a multiple screw jack system with all the lifting screws attached to the same structure. If
rotation of the screw cannot be prevented in the application design, a keyed screw configuration is
available for either the acme screw jack and ball screw jack. Input torque will increase for keyed
screw jack and the capacity may be reduced to 25% of rating.
What is the maximum and minimum operating temperature?
Standard Jacton screw jacks are designed to operate at maximum 80 deg.C (185 deg.F) ambient
temperature. For higher temperatures, special grease and seals are required, contact Jacton of these
special requirements. Minimum minus 20 deg.C (minus 4 deg.F) ambient temperature. For lower
temperatures, special grease and seals are required, contact Jacton of these special requirements.
How do I lubricate a screw screw jack?
Use the proper grease. Fill the gearbox by pumping grease into the grease fittings supplied in the
screw jack housing. The lifting screws should have grease applied directly to them with a rag or
paintbrush. This must be done as part of a regularly scheduled maintenance program.
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Company History
In 1997, Established Jacton Hardware Fabrication Plant, mainly processing kinds of hardware
following customers requirements. Occupied 500 square meters.
In 2000, Established domestic sales department, started to develop local market, mainly processing
gear transmission parts such as worm and worm gear, acme threads screw, square threads screw
and acme lead screw nut. Meanwhile, sales also sell straight bevel gear and spiral bevel gears for
customers.
In 2002, According to some regular customers of steel plants and machines manufacturers, which
used Taiwan screw jacks and miter gearboxes, due to long delivery and high price, would affect the
normal operations. Jacton Hardware Fabrication Plant started to processing JT acme screw jack and
JT miter gearbox following above customers samples.
In 2003, Established engineering department, research and development others models of JT acme
screw jack and JT miter gearbox, and draw some factory production drawings and local sales'
customers drawing with 2d autocad software.
In 2005, According to local market demands, Jacton Hardware Fabrication Plant is committed to
research and development JB/T8809-1998 standard JTW worm screw jack, JTM machine screw
jack, JTB ball screw jack and JTP cubic body miter gearbox.
In 2006, Because of local markets fiercely competitive. Established Hongkong office-Jacton
International Limited with own US dollars and EURO account. Established international sales
department, focused on overseas markets. Meanwhile, "JACTON" as company only brand.
In 2008, According to intl sales market report, cubic body screw jacks and another type cubic body
miter gearboxes are very popular in Europe and America markets. After managements meetings, we
started to develop JTC cubic screw jack, JTS high speed bevel gear jack, JTV cubic body miter
gearbox and JTA corrosion resistance aluminium body miter gearbox.
In 2009, Jacton Hardware Fabrication Plant extension, occupied 5000 square meters. Company
improves the processes and products through technology investment, brings in advanced
technology, production and testing equipment.
In 2010, Jacton Hardware Fabrication Plant Passed ISO9001:2008 quality management system, we
are strictly implement the work flow of ISO9001:2008 certifications, which ensures oversea and local
customers are satisfaction with our screw jacks and miter gearboxes and fast delivery time.
In 2012, In order to facilitating management, according to management decisions, sales department
and design department moved to Taibao business building. Meanwhile, Jacton Hardware Fabrication
Plant changed to be Dongguan Jacton Electromechanical Co.,Ltd.