The screw jack is composed of components such as worm gears, housing, bearings, and screw shafts. Its working principle is as follows: the motor or manual drive rotates the worm, which in turn drives the worm gear to reduce speed and rotate. The internal cavity of the worm gear is machined into an internal thread, driving the screw shaft to move up and down. Due to the presence of worm gears, the screw shaft's reduction effect amplifies the thrust.

Features: Rotation of the worm screw drives the screw rod's vertical movement, achieving the function of pushing, pulling, or lifting.

1. Standard-threaded screw jack electric actuators and screw lifts with self-locking features for normal performance, as they have low comprehensive transmission efficiency, most of them offer anti-impact self-locking functions to enhance the safety of equipment operation; ball screw electric actuators and screw lifts do not self-lock.

2. The overall positioning accuracy can reach 0.1mm; the servo electric cylinder positioning accuracy can reach 6um.

3. Control the encoder configuration, achieving closed-loop positioning through a variable frequency drive or controller; if high accuracy is not required, a potentiometer can be equipped for on-line control.

4. A synchronous single-reduction motor drives multiple rods simultaneously through mechanical connection, achieving synchronized lifting and lowering as well as synchronization.

5. Drive System: DC motor 12/24V, single-phase AC motor, three-phase AC motor, no air/hydraulic source required.

6. Overload protection can be equipped with a safety clutch to prevent overload; also available with an overload pressure sensor to prevent overload.

7, High load push/pull capacity up to 300 tons.

8. Other maintenance is simple, with low noise, and operates normally in high/low temperature, corrosive/explosive harsh environments.

Key features include: self-locking performance, synchronization, precise positioning, speed control, and thrust control.