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

By rotating the worm, the lead screw moves up and down, achieving a pushing, pulling, or lifting effect. 1. Self-locking performance: Standard tooth lead screw electric actuators and screw jacks have most with dynamic load self-locking function due to low comprehensive transmission efficiency, which increases the safety of equipment operation; ball screw electric actuators and screw jacks do not self-lock. 2. Precision positioning: The integrated positioning accuracy can reach 0.1mm; servo electric cylinder position accuracy can reach 6um. 3. Control configuration: Encoder, controlled by a variable frequency drive or controller, achieves closed-loop positioning; for lower precision requirements, potentiometers can be equipped for online control. 4. Synchronization: Single-reduction motor drives multiple actuators simultaneously through mechanical coupling, achieving synchronized lifting and lowering. 5. Drive system: DC motor 12/24V, single-phase AC motor, three-phase AC motor, no need for air or hydraulic source. 6. Overload protection: Safety clutch for overload prevention; overload pressure sensor for overload prevention can also be equipped. 7. High load push/pull force up to 300 tons.

8. Easy maintenance, low noise, operates normally in extreme high/low temperatures, corrosive/b爆炸-proof harsh environments; key features include: self-locking function, synchronization, precision positioning, speed control, and thrust control.