An “anti-rotation worm gear screw jack” is a specialized mechanical device designed to lift, lower, or position loads with high precision while preventing rotational movement of the lifting screw. In standard screw jacks, the screw tends to rotate under load, requiring an external guide to prevent it. An anti-rotation screw jack incorporates internal guiding mechanisms, such as keyways or square-threaded screws, to eliminate the need for external guides, ensuring linear motion without rotation.

Key Features:
-Anti-rotation Mechanism: Typically achieved using a keyed lifting screw or a square or hexagonal screw design within a matching guide.
- High Load Capacity: Capable of handling heavy loads with smooth, controlled motion.
- Self-Locking Ability: Prevents back-driving, ensuring load stability when the driving force is removed.
- Precise Positioning: Ideal for applications requiring accurate load positioning with minimal backlash.
- Compact Design: Suitable for confined spaces without the need for additional guiding structures.

Applications:
- Industrial lifting systems
- Conveyor belt tensioning
- Aerospace and automotive testing rigs
- Material handling and automation systems
- Construction and heavy machinery positioning

Anti-rotation worm gear screw jacks provide an efficient solution for linear motion applications where rotation needs to be restricted, offering improved reliability and simplified installation.