... ,15T,20T2.Configuration: worm and worm gear,bearing,housing and ball screw3.Ball screw jack assemblies use small balls to roll ... transmission place with frequent lifting and precise positioning.5.Ball screw jack stand loading capacity is 1/3 Lead ... , Hand Wheel, Inverter, Limited Switches, Linking Shaft, Coupling, Pillow Block Bearing, Counter, Bevel Gearbox, Swivel Plate and Trunnion Base.Features: * ...