Advantages of Screw Jacks
1. Gapless and High Rigid
Ball screw drive systems, when fitted with appropriate pre-tension, can eliminate axial clearance, reduce elastic deformation between the ball and nut, and the screw, achieving higher precision. The use of Gothic arch groove shapes allows the steel ball to easily come into contact with the groove for smooth operation.
2. High transmission efficiency
Ball screw drive systems can achieve greater thrust with less torque, boasting a transmission efficiency of up to 90% to 98%. They can also convert linear motion into rotational motion (motion reversible), which is 2 to 4 times more efficient than traditional sliding screw systems.
High durability
Steel ball rolling offers high service life and precision retention. All contact points are hardened (HRC 58-63) and precision ground, with the circulation system process being purely rolling, resulting in minimal wear.
4. High precision
The screw jack transmission system exhibits minimal temperature rise during operation, achieving high positioning and repeat positioning accuracy. It also allows for pre-tensioning to eliminate axial gaps and pre-stretching the screw to compensate for thermal expansion.
5. Smooth operation
Ball screw drive systems feature point contact rolling motion, offering high sensitivity during operation, no vibration at startup, no creeping at low speeds, and minimal frictional resistance, thereby enabling precise control of minute feed increments.
6. Good synchronization
Due to the smooth operation, stable movement, responsive performance, and zero slippage, using several identical ball screw transmission systems to simultaneously power multiple identical components or devices achieves excellent synchronization.
7. High Reliability
The screw jack system is easier to maintain and repair compared to other transmission mechanisms, such as hydraulic systems. It only requires regular lubrication and dust prevention, resulting in a low failure rate. In special conditions, it can operate without lubrication.