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