We all know that worm gear screw jacks have two kinds of operation modes: translating screw and travelling nut. Regardless of the operation modes, worm gear screw lifts require a stable, level mounting surface for secure installation.                              

The housing of a translating screw jack is fixed to the mounting surface, with travel space above and below the mounting surface. The top end of the lead screw connects to the material for up and down movement. Screw end can be designed with various connection options, including flanges, straight rods, threads, fork pins, pinholes, ball joints, making them suitable for installation in various equipment conditions.

Travelling nut screw jack use a nut connected to the material for up and down movement. There is travel space above the screw actuator's mounting surface, while the lead screw rotates in place. A nut attached to the lead screw connects to the material for up and down movement. The screw end can be either straight rod or threaded. To prevent the screw rod  from shaking during lifting, a bearing seat is required to secure the screw head.