Vérins à vis tournante, vérins de levage à vis, vérins électriques linéaires et des vérins à vis mécaniques
1. JTW-SERIES MACHINE SCREW JACKS
* The worm gear driven machine screw jack incorporates a heat treatment standard #45 steel worm which drives a high
strength bronze worm gear. The worm shaft is supported on anti-friction deep groove ball bearings with external seals
provided to prevent loss of lubrication. Lubrication with synthetic grease ep2 lithium grease. The bronze worm gear is
supported on anti-friction ball thrust bearings. Rotation of the bronze worm gear causes the acme thread lifting screw to
translate or rotate, depending upon jack configuration. The jack housing is made of ductile iron and proportioned to support
the rate capacity of the unit. The lifting screw is made of standard #45 steel.
* JTW-Series Machine Screw Jacks major configuration devides the jacks into translating machine screw jacks, lifting nut
rotating machine screw jacks, anti-rotation keyed machine screw jacks, anti-backlash machine screw jacks, double clevis
machine screw jacks etc. Upright and inverted type machine jacks. Standard lifting screw end types such as top flange (top
plate), clevis end (male clevis), threaded end and plain end, also can custom to make kinds of lifting screw ends.
* In the absence of vibration load, JTW-Series Machine Screw Jacks has self lock and precisely position loads, will hold
loads without backdriving, and no need any brake mechanism or locking system. Lifting force from 0.5 ton to 100 ton. Linear
speeds up to 2.875 m/min. Can be driven by motors, hand wheels or both together, 11 sizes in two gear ratios for high and
slow linear speeds. Can be mounted in any attitude. Generally maintenance free.
* JTW-Series Machine Screw Jacks are used wherever controlled lifting, lowering, pushing and pulling is required. They can
be installed single unit, in pairs or multiple units machine screw jack lifting systems simultaneously lifting. Accessories such
as electric motors, hand wheels, digital counters, flexible couplings, bevel gearboxes, bellows boots, limit switches, drive
shafts, pillow blocks, flange blocks, stop nuts, gear motors, worm gear reducer, rod ends etc.
* JTW-Series Machine Screw Jacks Application in metallurgy industry, mining industry, chemical industry, construction
industry and irrigation industry such as Large dish antenna movement, Workplace table adjustments, Vacuum furnace lid
lifters, Roll lifts, Mandrel pushers Sluice gates, Unwind stands, Calender stacks, Translating lift for pallets, Unstacking unit
for plate materials, Mobile scissor table suitable for pallet truck transfer, Height adjustment in a bottle testing system,
Adjustment of steel shuttering for concrete beams, Scissor table combination for exact height positioning of a platform, High
voltage switch gear Die set tables, Electron beam adjustments, Horizontal presses, Saw blade tension, Stage lifts for
scenery changes, Robotics manipulator, Disc refiner blade adjustment etc.
J AC TO N IN DUS TRY C O. ,LTD
TEL: 86-769-81585810, 81585852
SKYPE: jactonjack
EMAIL: sales@jactonjack.com
WEB: www.jacton-screwjacks.com
L IF T IN G S Y S T E M S S O L U T IO N S
S C R E W J A C K S
B E V E L G E AR B O X E S
L IF T IN G S Y S T E M S
S Y S T E MS AC C E S S O R IE S
C U S T O M S C R E W J A C K S
C U S T O M A C M E S C R E W S