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.
Centrifugal pumps work by using a rotating impeller to impart velocity energy to fluid and increase pressure. They consist of a casing and impeller on a shaft. As fluid enters the impeller eye, the impeller blades spin and eject fluid outward, increasing pressure. The volute collects and redirects the fluid, converting velocity energy to pressure. During operation, pressure imbalances across the impeller cause both radial and axial thrusts. Radial thrust is balanced through design of the casing and volute. Axial thrust is balanced through methods like balancing holes, wear rings, back vanes, or double suction impellers.
Presentation on Calculation of Polytropic and Isentropic Efficiency of natura...Waqas Manzoor
This presentation demonstrates comparison of calculation of Polytropic and Isentropic Efficiency of Natural Gas Compressor using Aspen HYSYS & using Manual Calculations. Complete derivation of equations of Polytropic and Isentropic efficiency, have also been demonstrated. The slight difference observed in the manually calculated values and Aspen HYSYS simulation, may be attributed to the calculation method of the software which is based on numerical integration.
Characteristics of single pump and pumps in series and parallel use of indust...TOPENGINEERINGSOLUTIONS
The document discusses setting up pumps in series and parallel configurations and measuring their performance. It includes:
- Instructions on connecting a single pump, or two identical pumps in series or parallel, to a water circulation system and software.
- Procedures to operate each configuration at varying flow rates, recording total head and flow from sensors to obtain pump curve data.
- Objectives to analyze and compare the performance of a single pump versus pumps in series/parallel, and suggest appropriate configurations based on given flow and head requirements.
- Background theory that pumps in series double the achievable head rise while maintaining the same flow, and pumps in parallel double the flow while maintaining the same head rise.
The document discusses centrifugal pump classification, installation, maintenance, and troubleshooting. It begins with an overview of centrifugal pump classification according to ANSI/API standards, describing various pump designs and their type codes. It then covers topics like pump installation, maintenance processes and tasks, and common issues that can cause insufficient discharge flow such as the pump not being primed, low speed, high system head, and more.
This document discusses pump selection and applications. It begins by outlining the chapter, which covers introductory concepts in pump selection, parameters to consider, types of pumps including positive displacement and kinetic pumps, and performance data for centrifugal pumps. The affinity laws relating speed, impeller diameter, capacity, head, and power for centrifugal pumps are also described. The chapter provides examples of pump performance curves and works through an example problem applying the affinity laws.
The document provides information about an oil centrifuge made by Alfa Laval, including its working principle, benefits, parts, maintenance procedures, troubleshooting tips, startup process, and safety measures. The centrifuge uses centrifugal force to separate oil, water, and solid particles. It offers benefits like removing contaminants as small as 2 μm, reducing machine wear, and being low cost and high performance. Key parts include the disc stack, worm and worm gear, friction clutches, and gear pump. Routine maintenance and troubleshooting various issues are discussed. Startup involves powering on and adjusting valves to separate oil and water. Safety measures are needed due to high rotational speeds and heat.
This document provides information on the design of pressure vessels. It defines pressure vessels as containers designed to operate above 15 Psi and discusses why proper design is important to prevent failure. The document outlines various codes used for pressure vessel design and stresses that vessels experience from internal pressure, weight, and other loads. It also describes common pressure vessel components like shells, heads, nozzles, and supports, and provides formulas for calculating thicknesses of different vessel components.
Centrifugal pumps work by using a rotating impeller to impart velocity energy to fluid and increase pressure. They consist of a casing and impeller on a shaft. As fluid enters the impeller eye, the impeller blades spin and eject fluid outward, increasing pressure. The volute collects and redirects the fluid, converting velocity energy to pressure. During operation, pressure imbalances across the impeller cause both radial and axial thrusts. Radial thrust is balanced through design of the casing and volute. Axial thrust is balanced through methods like balancing holes, wear rings, back vanes, or double suction impellers.
Presentation on Calculation of Polytropic and Isentropic Efficiency of natura...Waqas Manzoor
This presentation demonstrates comparison of calculation of Polytropic and Isentropic Efficiency of Natural Gas Compressor using Aspen HYSYS & using Manual Calculations. Complete derivation of equations of Polytropic and Isentropic efficiency, have also been demonstrated. The slight difference observed in the manually calculated values and Aspen HYSYS simulation, may be attributed to the calculation method of the software which is based on numerical integration.
Characteristics of single pump and pumps in series and parallel use of indust...TOPENGINEERINGSOLUTIONS
The document discusses setting up pumps in series and parallel configurations and measuring their performance. It includes:
- Instructions on connecting a single pump, or two identical pumps in series or parallel, to a water circulation system and software.
- Procedures to operate each configuration at varying flow rates, recording total head and flow from sensors to obtain pump curve data.
- Objectives to analyze and compare the performance of a single pump versus pumps in series/parallel, and suggest appropriate configurations based on given flow and head requirements.
- Background theory that pumps in series double the achievable head rise while maintaining the same flow, and pumps in parallel double the flow while maintaining the same head rise.
The document discusses centrifugal pump classification, installation, maintenance, and troubleshooting. It begins with an overview of centrifugal pump classification according to ANSI/API standards, describing various pump designs and their type codes. It then covers topics like pump installation, maintenance processes and tasks, and common issues that can cause insufficient discharge flow such as the pump not being primed, low speed, high system head, and more.
This document discusses pump selection and applications. It begins by outlining the chapter, which covers introductory concepts in pump selection, parameters to consider, types of pumps including positive displacement and kinetic pumps, and performance data for centrifugal pumps. The affinity laws relating speed, impeller diameter, capacity, head, and power for centrifugal pumps are also described. The chapter provides examples of pump performance curves and works through an example problem applying the affinity laws.
The document provides information about an oil centrifuge made by Alfa Laval, including its working principle, benefits, parts, maintenance procedures, troubleshooting tips, startup process, and safety measures. The centrifuge uses centrifugal force to separate oil, water, and solid particles. It offers benefits like removing contaminants as small as 2 μm, reducing machine wear, and being low cost and high performance. Key parts include the disc stack, worm and worm gear, friction clutches, and gear pump. Routine maintenance and troubleshooting various issues are discussed. Startup involves powering on and adjusting valves to separate oil and water. Safety measures are needed due to high rotational speeds and heat.
This document provides information on the design of pressure vessels. It defines pressure vessels as containers designed to operate above 15 Psi and discusses why proper design is important to prevent failure. The document outlines various codes used for pressure vessel design and stresses that vessels experience from internal pressure, weight, and other loads. It also describes common pressure vessel components like shells, heads, nozzles, and supports, and provides formulas for calculating thicknesses of different vessel components.
This document provides an introduction and overview of the book "Power Piping: The Complete Guide to ASME B31.1" by Charles Becht IV. It discusses the book's coverage of the ASME B31.1 code for power piping systems, the qualifications and experience of the author, and the book's table of contents. The introduction also provides brief biographies of Charles Becht and an overview of his extensive experience with pressure vessels and piping codes and standards.
1) The document compares two types of horizontal centrifugal pumps - ANSI pumps and API pumps.
2) ANSI pumps are designed to lighter duty applications, have a casing pressure rating of 300 PSIG at 300°F, and are commonly used for chemical processes and water services.
3) API pumps are designed for higher pressure and temperature applications in oil refineries, have a casing pressure rating of 750 PSIG at 500°F, and often have a double volute casing to reduce shaft loads.
The document provides information about operating procedures for a compressor at a refinery project in Paradeep. It discusses various steps involved in taking over the compressor from maintenance, starting it up, normal operation and monitoring, emergency shutdown, and shutting it down for handover to maintenance. Key steps include establishing utilities, warming up piping, starting the turbine slowly, monitoring parameters, and tripping in emergencies. Safety is emphasized throughout compressor operation.
Asme design and construction of lpg storage tank installationlpgbnhgastank
LPG tanks are designed and constructed according to ASME Section VIII Division 1 or Division 2 codes for US regulations. The design process involves selecting materials and determining stress values, testing requirements, welding procedures, and other parameters according to code requirements. Drawings are then prepared based on the design calculations. In construction, the tank is fabricated according to the drawings and tested at various stages as required. BNH Gas Tanks has engineers qualified to design and construct LPG tanks to ASME standards and provide turnkey solutions including installation, manufacturing, and commissioning.
- The document describes an exercise to model and simulate oil production from the Harthun field to an existing platform called Wigoth Alfa via a subsea pipeline.
- The first task is to use steady state simulations at 5 kg/s and 15 kg/s flow rates to determine the minimum required insulation thickness and pipeline diameter. This will ensure the fluid arrival temperature is above 27C for 5 kg/s flow and pressure is below 80 bara for 15 kg/s flow.
- The document provides material properties, fluid properties, pipeline geometry and conditions to set up the preliminary steady state model and simulations in OLGA.
Comparison between natural rise and artificial liftMohannad Hany
Natural rise uses the natural pressure differences between underground reservoirs and the surface to produce oil, driven by mechanisms like rock expansion, gas caps, and water displacement. Artificial lift lowers bottom hole pressure with pumps to increase production rates when natural pressures decline. The main types of artificial lift are sucker rod pumping, electrical submersible pumping, gas lift, and hydraulic pumps. Sucker rod pumping units have surface and subsurface components, with the subsurface including the rod string and downhole pump.
This document provides an introduction and overview for a supply manual for the M38 1/4 ton 4x4 utility truck. It outlines 10 sections that describe the purpose and organization of the manual, including how to identify parts, find stock numbers, and locate parts within the standard government grouping structure. The manual contains illustrations and part listings organized into groups and subgroups to facilitate identifying and selecting individual parts.
This document provides information about various types of pumps. It discusses centrifugal pumps, rotary pumps, reciprocating pumps, and deep well pumps. It also covers pump classification, fundamental pump equations, centrifugal pump priming, positive displacement pumps, and plunger pumps. The key details covered include the operating principles of centrifugal, rotary, and reciprocating pumps. It also defines total dynamic head, fluid power, discharge, brake power, and efficiency equations.
Rotary vibrating screen is designed as a high-precision screening machinery. Round vibrating sieve is composed of vertical motor,and eccentric weight installed at two ends.We can produce horizontal, vertical, inclined motions by adjusting the upper and lower eccentric weight.Diameter can be ranged from 400mm to 2000mm, with single or multiple screening decks.
The document summarizes the operation of a root blower. A root blower consists of two or more lobed rotors that turn inside a casing to draw in, compress, and discharge air. As the rotors turn, they trap air between the lobes and casing and carry it to the discharge side. Root blowers are commonly used for scavenging and supercharging internal combustion engines. They are positive displacement machines that can continuously deliver air or gas with no reciprocating parts, making them dynamically balanced and simple in construction.
Be project - PRDS (Pressure Reducing And Desuperheater Station)Nikhilesh Mane
The document describes the design of a pressure reducing and desuperheater station (PRDS) by a group of mechanical engineering students. It includes the objectives, methodology, design calculations, layout, and components of the PRDS. The group analyzed steam properties, selected valves and layout, designed an inline multi-nozzle desuperheater, and installed and analyzed the PRDS. Calculations were shown for sizing the steam and water pipes, nozzle dimensions, and validating the design was safe. The layout included valves, strainers, gauges and the desuperheater. References were provided for standards and related research.
An overview of distillation column design concepts and major design considerations. Explains distillation column design concepts, what you would provide to a professional distillation column designer, and what you can expect back from a distillation system design firm. To speak with an engineer about your distillation column project, call EPIC at 314-207-4250.
Cavitation is the formation of vapor phase cavities, or bubbles, within a liquid, usually due to rapid changes in localized pressure. Various mechanical parts such as pumps, control valves, and propellers can cause cavitation to occur.
Ejector pumps have several advantages including low cost, no moving parts, and simple and compact construction. They are reliable due to their inherent simplicity and require little maintenance. Ejector pumps are also corrosion and erosion resistant, easy to install, and can achieve high vacuums as low as three microns. The selection of an ejector pump depends on factors like steam pressure, water temperature, required suction pressure and capacity. Ejector pumps are used in industries like processing, food, steel, and more for applications involving filtration, distillation, absorption, mixing, vacuum packaging, freeze drying, and degassing.
This document provides an overview of operations at the BYCO Oil Refinery in Hub Baluchistan, Pakistan. It describes the various units in the refinery's ORC-1 complex, including the crude distillation unit, naphtha splitter, hydrotreater, reformer unit, and support units. It discusses the processes, equipment, reactions, and products of each unit. The document also includes summaries of the refinery's HSEQ department and oil movement and storage operations.
This document provides instructions for constructing an Aspen HYSYS simulation of cyclohexane production via benzene hydrogenation. It includes process details like feed streams, operating specifications, and reaction chemistry. The simulation involves building a flowsheet with a mixer, heater, conversion reactor, cooler, separator, recycle loops, and distillation column. Step-by-step instructions are provided to define each unit operation using the HYSYS interface and solve the simulation.
This document discusses pumps, including their function, principle of operation, types, selection criteria, and engineering design process. The main types of pumps covered are centrifugal pumps and positive displacement pumps. Key factors in pump selection include the nature of the fluid being pumped, system requirements, environmental conditions, and cost. Pump performance is characterized using curves showing head, flow rate, and efficiency. Proper pump sizing and installation are important to avoid issues like cavitation.
This document discusses options for distilling dilute ethanol to produce 99.5% ethanol. It analyzes pressure swing distillation versus azeotropic distillation, with benzene as a common entrainer. Preliminary simulations show pressure swing distillation yields the desired product composition with less ethanol loss. A three-column system is also considered but deemed too costly. The document outlines objectives of determining the optimal distillation method, finalizing a process flow diagram, performing safety and economic analyses, and achieving a 5% annual ROI.
Centrifugal pumps work by converting mechanical energy into hydraulic energy using centrifugal force. They are commonly used to lift liquids to higher elevations.
The document discusses key components of centrifugal pumps including the impeller, casing, suction and delivery pipes. It also covers critical concepts such as net positive suction head (NPSH), wearing rings, stuffing boxes, and lantern rings which are used to seal the pump shaft. Cavitation and its damaging effects are also summarized.
4. Mechanical design of pressure vessels_slides.pdfYafetTilahun
This document provides an overview of key concepts for the mechanical design of pressure vessels, including determining design pressure and temperature, selecting material and maximum allowable stress values according to the ASME code, calculating wall thickness using formulas, adding corrosion allowance, common head and vessel types, estimating vessel weight, and outlining typical pressure vessel specification requirements. The purpose is to present concepts a project engineer needs to understand to properly specify and purchase pressure vessel equipment for the oil and gas industry.
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.
This document provides an introduction and overview of the book "Power Piping: The Complete Guide to ASME B31.1" by Charles Becht IV. It discusses the book's coverage of the ASME B31.1 code for power piping systems, the qualifications and experience of the author, and the book's table of contents. The introduction also provides brief biographies of Charles Becht and an overview of his extensive experience with pressure vessels and piping codes and standards.
1) The document compares two types of horizontal centrifugal pumps - ANSI pumps and API pumps.
2) ANSI pumps are designed to lighter duty applications, have a casing pressure rating of 300 PSIG at 300°F, and are commonly used for chemical processes and water services.
3) API pumps are designed for higher pressure and temperature applications in oil refineries, have a casing pressure rating of 750 PSIG at 500°F, and often have a double volute casing to reduce shaft loads.
The document provides information about operating procedures for a compressor at a refinery project in Paradeep. It discusses various steps involved in taking over the compressor from maintenance, starting it up, normal operation and monitoring, emergency shutdown, and shutting it down for handover to maintenance. Key steps include establishing utilities, warming up piping, starting the turbine slowly, monitoring parameters, and tripping in emergencies. Safety is emphasized throughout compressor operation.
Asme design and construction of lpg storage tank installationlpgbnhgastank
LPG tanks are designed and constructed according to ASME Section VIII Division 1 or Division 2 codes for US regulations. The design process involves selecting materials and determining stress values, testing requirements, welding procedures, and other parameters according to code requirements. Drawings are then prepared based on the design calculations. In construction, the tank is fabricated according to the drawings and tested at various stages as required. BNH Gas Tanks has engineers qualified to design and construct LPG tanks to ASME standards and provide turnkey solutions including installation, manufacturing, and commissioning.
- The document describes an exercise to model and simulate oil production from the Harthun field to an existing platform called Wigoth Alfa via a subsea pipeline.
- The first task is to use steady state simulations at 5 kg/s and 15 kg/s flow rates to determine the minimum required insulation thickness and pipeline diameter. This will ensure the fluid arrival temperature is above 27C for 5 kg/s flow and pressure is below 80 bara for 15 kg/s flow.
- The document provides material properties, fluid properties, pipeline geometry and conditions to set up the preliminary steady state model and simulations in OLGA.
Comparison between natural rise and artificial liftMohannad Hany
Natural rise uses the natural pressure differences between underground reservoirs and the surface to produce oil, driven by mechanisms like rock expansion, gas caps, and water displacement. Artificial lift lowers bottom hole pressure with pumps to increase production rates when natural pressures decline. The main types of artificial lift are sucker rod pumping, electrical submersible pumping, gas lift, and hydraulic pumps. Sucker rod pumping units have surface and subsurface components, with the subsurface including the rod string and downhole pump.
This document provides an introduction and overview for a supply manual for the M38 1/4 ton 4x4 utility truck. It outlines 10 sections that describe the purpose and organization of the manual, including how to identify parts, find stock numbers, and locate parts within the standard government grouping structure. The manual contains illustrations and part listings organized into groups and subgroups to facilitate identifying and selecting individual parts.
This document provides information about various types of pumps. It discusses centrifugal pumps, rotary pumps, reciprocating pumps, and deep well pumps. It also covers pump classification, fundamental pump equations, centrifugal pump priming, positive displacement pumps, and plunger pumps. The key details covered include the operating principles of centrifugal, rotary, and reciprocating pumps. It also defines total dynamic head, fluid power, discharge, brake power, and efficiency equations.
Rotary vibrating screen is designed as a high-precision screening machinery. Round vibrating sieve is composed of vertical motor,and eccentric weight installed at two ends.We can produce horizontal, vertical, inclined motions by adjusting the upper and lower eccentric weight.Diameter can be ranged from 400mm to 2000mm, with single or multiple screening decks.
The document summarizes the operation of a root blower. A root blower consists of two or more lobed rotors that turn inside a casing to draw in, compress, and discharge air. As the rotors turn, they trap air between the lobes and casing and carry it to the discharge side. Root blowers are commonly used for scavenging and supercharging internal combustion engines. They are positive displacement machines that can continuously deliver air or gas with no reciprocating parts, making them dynamically balanced and simple in construction.
Be project - PRDS (Pressure Reducing And Desuperheater Station)Nikhilesh Mane
The document describes the design of a pressure reducing and desuperheater station (PRDS) by a group of mechanical engineering students. It includes the objectives, methodology, design calculations, layout, and components of the PRDS. The group analyzed steam properties, selected valves and layout, designed an inline multi-nozzle desuperheater, and installed and analyzed the PRDS. Calculations were shown for sizing the steam and water pipes, nozzle dimensions, and validating the design was safe. The layout included valves, strainers, gauges and the desuperheater. References were provided for standards and related research.
An overview of distillation column design concepts and major design considerations. Explains distillation column design concepts, what you would provide to a professional distillation column designer, and what you can expect back from a distillation system design firm. To speak with an engineer about your distillation column project, call EPIC at 314-207-4250.
Cavitation is the formation of vapor phase cavities, or bubbles, within a liquid, usually due to rapid changes in localized pressure. Various mechanical parts such as pumps, control valves, and propellers can cause cavitation to occur.
Ejector pumps have several advantages including low cost, no moving parts, and simple and compact construction. They are reliable due to their inherent simplicity and require little maintenance. Ejector pumps are also corrosion and erosion resistant, easy to install, and can achieve high vacuums as low as three microns. The selection of an ejector pump depends on factors like steam pressure, water temperature, required suction pressure and capacity. Ejector pumps are used in industries like processing, food, steel, and more for applications involving filtration, distillation, absorption, mixing, vacuum packaging, freeze drying, and degassing.
This document provides an overview of operations at the BYCO Oil Refinery in Hub Baluchistan, Pakistan. It describes the various units in the refinery's ORC-1 complex, including the crude distillation unit, naphtha splitter, hydrotreater, reformer unit, and support units. It discusses the processes, equipment, reactions, and products of each unit. The document also includes summaries of the refinery's HSEQ department and oil movement and storage operations.
This document provides instructions for constructing an Aspen HYSYS simulation of cyclohexane production via benzene hydrogenation. It includes process details like feed streams, operating specifications, and reaction chemistry. The simulation involves building a flowsheet with a mixer, heater, conversion reactor, cooler, separator, recycle loops, and distillation column. Step-by-step instructions are provided to define each unit operation using the HYSYS interface and solve the simulation.
This document discusses pumps, including their function, principle of operation, types, selection criteria, and engineering design process. The main types of pumps covered are centrifugal pumps and positive displacement pumps. Key factors in pump selection include the nature of the fluid being pumped, system requirements, environmental conditions, and cost. Pump performance is characterized using curves showing head, flow rate, and efficiency. Proper pump sizing and installation are important to avoid issues like cavitation.
This document discusses options for distilling dilute ethanol to produce 99.5% ethanol. It analyzes pressure swing distillation versus azeotropic distillation, with benzene as a common entrainer. Preliminary simulations show pressure swing distillation yields the desired product composition with less ethanol loss. A three-column system is also considered but deemed too costly. The document outlines objectives of determining the optimal distillation method, finalizing a process flow diagram, performing safety and economic analyses, and achieving a 5% annual ROI.
Centrifugal pumps work by converting mechanical energy into hydraulic energy using centrifugal force. They are commonly used to lift liquids to higher elevations.
The document discusses key components of centrifugal pumps including the impeller, casing, suction and delivery pipes. It also covers critical concepts such as net positive suction head (NPSH), wearing rings, stuffing boxes, and lantern rings which are used to seal the pump shaft. Cavitation and its damaging effects are also summarized.
4. Mechanical design of pressure vessels_slides.pdfYafetTilahun
This document provides an overview of key concepts for the mechanical design of pressure vessels, including determining design pressure and temperature, selecting material and maximum allowable stress values according to the ASME code, calculating wall thickness using formulas, adding corrosion allowance, common head and vessel types, estimating vessel weight, and outlining typical pressure vessel specification requirements. The purpose is to present concepts a project engineer needs to understand to properly specify and purchase pressure vessel equipment for the oil and gas industry.
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.
The document describes the design and analysis of a car jack using CAD software CATIA and FEA software ANSYS. It was a summer training project completed by two students to fulfill their degree requirements. The project involved modeling a scissor jack in CATIA, analyzing it using ANSYS to determine stresses and efficiency, and optimizing the design to improve the jack's life and performance. The document provides background on different types of jacks, prior research, and specifications and working of scissor jacks to support the project objectives.
The document summarizes key concepts about screws, fasteners, and bolted joints from Shigley's Mechanical Engineering Design textbook. It discusses thread standards and definitions, types of bolts and screws, mechanics of power screws, stiffness of bolted joints, preload in bolts, and factors that affect fatigue loading of bolted joints. Examples are provided to illustrate calculation of power screw torque and analysis of bolted joint stiffness.
DESIGN AND FABRICATION OF A POWER SCISSOR JACKsasank babu
The document describes the design and fabrication of a power scissor jack. It provides background on screw jacks used in World War II vehicles and discusses various types of lifting devices such as levers, screws, and gears. The document is a project report submitted to fulfill the requirements for a Bachelor of Technology degree in Mechanical Engineering. It includes chapters on power screws, design of the scissor jack components, drawings, manufacturing methods, fabrication, and conclusions.
The document discusses screw jacks, which are mechanical devices that use a screw mechanism to convert rotational motion into linear motion to raise or lower loads. Screw jacks operate by turning a lead screw, and can be manually operated or powered. Common types include scissor jacks and bottle jacks. The document outlines the components, materials, manufacturing processes, and assembly of a typical screw jack, noting that frames are often made of cast iron while screws use hardened steel or bronze for nuts. Screw jacks provide mechanical advantage through their screw mechanisms to allow lifting of heavy loads with minimal effort.
Assembly of screw jack, Computer Aided Machine Drawing (CAMD) of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
This document provides an operating manual for a scissor lift model. It includes specifications for two models, VL-6238M1 and VL-5272. It provides descriptions of the installation process, safe operation procedures, and parts lists for the lift and its components.
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.
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.
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.
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.
Right angle speed increaser 1:1.5, 90 degree gearbox pinion shaft, small right angle gear box,90 degree gearbox,gear reducer 90 degree 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.
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.
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.
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.
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.
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.
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.
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Discover the Beauty and Functionality of The Expert Remodeling Serviceobriengroupinc04
Unlock your kitchen's true potential with expert remodeling services from O'Brien Group Inc. Transform your space into a functional, modern, and luxurious haven with their experienced professionals. From layout reconfiguration to high-end upgrades, they deliver stunning results tailored to your style and needs. Visit obriengroupinc.com to elevate your kitchen's beauty and functionality today.
AI Transformation Playbook: Thinking AI-First for Your BusinessArijit Dutta
I dive into how businesses can stay competitive by integrating AI into their core processes. From identifying the right approach to building collaborative teams and recognizing common pitfalls, this guide has got you covered. AI transformation is a journey, and this playbook is here to help you navigate it successfully.
Cover Story - China's Investment Leader - Dr. Alyce SUmsthrill
In World Expo 2010 Shanghai – the most visited Expo in the World History
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2. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com2
Contents
General Information --------------------------------------------------------------------------- 3
Configurations----------------------------------------------------------------------------------- 4
Critical Buckling Force Of Lifting Screw ----------------------------------------------- 5
Critical Revolution Speed Of Lifting Screw-------------------------------------------- 6-7
Specifications
1. JTC2.5 (Tr16x4), JTC5 (Tr18x4) ---------------------------------------------------------------- 8
2. JTC10 (Tr20x4), JTC25 (Tr30x6) --------------------------------------------------------------- 9
3. JTC50 (Tr40x7), JTC100 (Tr55x9) ------------------------------------------------------------- 10
4. JTC150 (Tr60x9), JTC200 (Tr70x10) ---------------------------------------------------------- 11
5. JTC250 (Tr80x10), JTC350 (Tr100x10) ------------------------------------------------------- 12
6. JTC500 (Tr120x14) ----------------------------------------------------------------------------- 13
Selection Guides
1. Jack Brand --------------------------------------------------------------------------------------- 14
2. Jack Series --------------------------------------------------------------------------------------- 14
3. Load Capacity ------------------------------------------------------------------------------------ 14
4. Screw Configurations & Mounting Orientation ------------------------------------------------- 14
5. Travel Stroke-------------------------------------------------------------------------------------- 14
6. Gear Ratio ---------------------------------------------------------------------------------------- 15
7. Screw End Fittings-------------------------------------------------------------------------------- 15
8. Worm Shaft Input Type--------------------------------------------------------------------------- 15
9. Accessories --------------------------------------------------------------------------------------- 15-16
Dimensions
1. Model JTC2.5 (Tr16x4) -------------------------------------------------------------------------- 17
2. Model JTC5 (Tr18x4) ---------------------------------------------------------------------------- 18
3. Model JTC10 (Tr20x4) --------------------------------------------------------------------------- 19
4. Model JTC25 (Tr30x6) --------------------------------------------------------------------------- 20
5. Model JTC50 (Tr40x7) --------------------------------------------------------------------------- 21
6. Model JTC100 (Tr55x9) -------------------------------------------------------------------------- 22
7. Model JTC150 (Tr60x9) -------------------------------------------------------------------------- 23
8. Model JTC200 (Tr70x10) ------------------------------------------------------------------------- 24
9. Model JTC250 (Tr80x10) ------------------------------------------------------------------------- 25
10. Model JTC350 (Tr100x10) ---------------------------------------------------------------------- 26
11. Model JTC500 (Tr120x14) ---------------------------------------------------------------------- 27
Application Examples ------------------------------------------------------------------------- 28
Operation Manual ------------------------------------------------------------------------------- 29-33
Frequently Asked Questions ---------------------------------------------------------------- 34-37
Company History -------------------------------------------------------------------------------- 38
Contact Us ----------------------------------------------------------------------------------------- 39
3. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com3
General Information
JTC Series Screw Jack Features:
* Model JTC2.5, JTC5, JTC10, JTC25, JTC50, JTC100, JTC150, JTC200, JTC250, JTC350, JTC500
* Milled cubic gearbox provides precision machined mounting surfaces
* Loading capacity from 2.5kN to 500kN, Speed up to 1500mm/min
* Self locking acme screw, precise positioning, uniform lifting speed
* Each jack has two worm gear ratios, high speed(H), low speed(L)
* No standard travel length, all screw jack stroke produced following your needs
* 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
* Manual operation, motor driven or both
* Single phase ac motor, three phases ac motor, dc 12v, 24v motor, ac gear motors
* Individual or multiple screw jack lift system arrangements
4. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com4
Configurations
JTC series cubic screw jack main structure includes bronze worm gear, high hardness worm shaft,
heavy load thrust bearings, rugged cubic shape housing, grease seals and self-locking acme screw.
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
Thrust Bearing
Thrust bearing moves heavier loads, increase the safety reserve and extend the service lift
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
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
Cubic Gearbox
1. CNC precision automatic lathe processing, milled 6 housing surfaces
2. Cast iron or ductile cast iron material, customized aluminum, alloy steel material
Grease Seals
1. Grease seals, prevent grease or gear oil leak
Notes: normal oil seals work temperature range -20 deg C to +80 deg C. For super low temperature
or super high temperature operating temperature, please consult Jacton engineers
5. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com5
The lifting screws may buckle sideways
when subjected to compressive loads.
Before the permissible compressive force
is defined for the screw, allowance must
be made for safety factors as appropriate
to the installation.
Fzul = fk x Fkrit x 0.8
Fzul: max. allowable axial force [kN]
fk: Correction factor that considers the type of
screw jack bearing.
Fkrit: Theortical critical buckling force as a
function of the unsupported length [kN]
0.8: Safety factor CK
Critical Buckling Force Of Lifting Screw
6. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com6
Critical Revolution Speed Of Lifting Screw
Resonant bending vibration may develop with lifting screws rotating at high speed. Assuming a
sufficiently rigid assembly, the resonant frequency can be estimated with the aid of the following
method. JTC series screw jack with multi-start screws are also available for applications with high
lifting speed. These versions run at a considerably lower screw speed and better efficiency for the
same lifting speed. They are generally not self-locking.
Nzul = Nkrit x 0.8
Nzul: Maximum permissible screw revolution speed [RPM]
Nkrit: Theoretical critical screw revolution speed [RPM]
0.8: Safety factor
Case 1
Models Codes
1 – JTC2.5 (Tr16x4) 2 – JTC5 (Tr18x4) 3 – JTC10 (Tr20x4)
4 – JTC25 (Tr30x6) 5 – JTC50 (Tr40x7) 6 – JTC100 (Tr55x9)
7 – JTC150 (Tr60x9) 8 – JTC200 (Tr70x10) 9 – JTC250 (Tr80x10)
10 – JTC350 (Tr100x10) 11 – JTC500 (Tr120x14)
14. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com14
JT - C - 50 - UR - 300 - H - II - C - HW
1 2 3 4 5 6 7 8 9
Selection Guides
1. Jack Brand
JT: “Jacton” brand screw jack
2. Jack Series
C series cubic screw jack
C: Cubic shape housing
3. Load Capacity
Frame No. 2.5 5 10 25 50 100 150 200 250 350 500
Load capacity(kN) 2.5 5 10 25 50 100 150 200 250 350 500
4. 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
5. Travel Stroke
300, means travel stroke 300mm
No standard travel stroke, all screw jack stroke produced following your needs
15. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com15
6. Gear Ratio
Each jack model has two gear ratios
H: high ratio (1mm travel per full turn of worm shaft)
L: low ratio (0.25mm travel per full turn of worm shaft)
Frame No. 2.5 5 10 25 50 100 150 200 250 350 500
H 1/4 1/4 1/4 1/6 1/7 1/9 1/9 1/10 1/10 1/10 1/14
L 1/16 1/16 1/16 1/24 1/28 1/36 1/36 1/40 1/40 1/40 1/56
7. Screw End Fittings
Cubic screw jack standard acme screw end fittings includes top plate, clevis end, threaded end, plain
end and forked head. If you have your own acme screw end fitting design, we can make them
following your requirements.
I: Top Plate II: Clevis End III: threaded End IV: forked head VI: plain end
8. 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
9. 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
16. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com16
Example>>>>>> JT-C-100-UR-1000-L-I-C-PP/BB/HW
1. Cubic Shape Housing, Acme Screw Type
2. 100kN
3. Upright Rotating Screw
4. 1000mm Stroke
5. Low Gear Ratio 1/36
6. Top Plate End Fitting
7. Double Worm Shaft Input
8. Protective Pipe
9. Bellows Boot
10. Hand Wheel
28. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com28
JTC series screw jack applications in 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 oven lifts system, feeder leveler, roller adjustment, tunnel ventilation
damper adjustment, postform roller elevation, car lifting trolley, extrusion machine, cnc steel leveling
machine, blow molding machine, floating glass leveler, curing oven lifts, mobile container lifting gear,
moveable swimming pool lifting floor, bolted tank, steel shuttering concrete beams adjustment,
caterpillar laminating machine, roller Laminating machine, complete mineral wool processing
machinery, sandwich panel handling machinery, vintage industrial crank desk and anywhere required
raising, lowering, pulling, pushing and rolling linear motions.
Applications
29. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com29
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.
30. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com30
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
31. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com31
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
32. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com32
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.
33. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com33
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
34. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com34
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
35. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com35
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.
36. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com36
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.
37. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com37
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.
38. Jacton Electromechanical Co.,Ltd http://www.screw-jack.com38
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.