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Screw Jacks,Gearboxes,Actuators,Lifting Systems Manufacturers

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JTB-Series Ball Screw Jacks

JTB Series Ball Screw Jacks are born from the experience in machine screw jacks. They have the greater efficiency and rolling action, the ball screw jacks can operate at higher speeds or increased duty cycle when compared with the machine screw jacks. The addition of a high efficiency ball screw and nut reduces the required input torque. Required approximately two-thirds less input torque to move the load than similarly rated machine screw jacks. They are NOT self-locking so a brake motor or external locking device needs to be included in the drive system and hand wheels are not a recommended option. Can be mounted in any attitude. Generally maintenance free.

JTB-Series Ball Screw Jacks Key Features
* High accuracy ball screw, high efficiency, high performance, high duty cycle, low backlash, long service life, and uniform lifting speed
* Available in 7 sizes from JTB-1T to JTB-35T.
* Maximum static load capacity from 1 Ton to 35 Ton.
* Ball screw diameter from 20 mm to 100 mm.
* Standard ball screw maximum length 6000 mm, custom longer stroke.
* Upright or Inverted mounting. Available in tension or compression loads.
* Translating, Ant-rotation, and Rotating designs.
* Models JTB-1T to JTB-10T have THREE gear ratios (High ratio, Medium ratio, Slow ratio). Models JTB-20T to JTB-35T have TWO gear ratios (High ratio, Slow ratio). 
* Standard with 1-start ball screw, custom 2-starts ball screw which offers increased travel speed. Both of them require a brake or external locking device to hold position.
* Custom-made machine screw diameter and pitch, gear ratios, and worm shaft sizes.
* Ball Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.
* Can be operated by manually operated or by electrical motor driven.
* Single unit use, or complete jacking system including gear motors, bevel gearboxes, connecting shafts and couplings for dual or multiple jack arrangements.
* Custom-made double clevis screw jack, anti-backlash screw jack.
* Can be used as alternatives to hydraulic and pneumatic systems. 


JTB-Series Ball Screw Jacks Specifications