... 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.* ... ,Couplings,Flexible Linking Shaft,Trunnion Base,etc.* Application Industries: Machinery,Metallurgy,Construction, Irrigation,Chemical industry ...