... Duty, Uniform Lifting Speed, Low Efficiency, Use Infrequentl worm screw liftConfiguration: Worm Gear, Worm Shaft, Taper Roll Bearings, ... Manual Operation and Electrical Operation are available.* Multiple Screw Jack Systems are availbale and fully synchronized.* Absolutely ... Nut,Steel Cover,Rubber Belllows,Limit Switches,Couplings,Flexible Linking Shaft,Trunnion Base,etc.* Application Industries: ...