​Quelles sont les caractéristiques notables des roulements de support de vis à rouleaux？

Roller screw support bearings have several notable characteristics when in use:

Significant Increase in Transmission Efficiency: Roller screw support bearings boast transmission efficiency ranging from 90% to 98%, which is 2 to 4 times higher than traditional sliding screw systems. This higher efficiency allows for greater thrust generation under the same torque, with the added capability of seamlessly transitioning between linear and rotational motion.

Smooth and Vibration-Free Motion: Utilizing point-contact rolling motion, roller screw support bearings exhibit minimal frictional resistance and high sensitivity. This results in smooth and vibration-free motion, ensuring stability and precision particularly during startup and low-speed operation.

High-Precision Positioning and Repositioning: These bearings experience minimal temperature rise during operation and can eliminate axial clearance and thermal expansion through preloading and pre-stretching methods. Consequently, they achieve high-precision positioning and repositioning, meeting the stringent accuracy requirements of modern manufacturing.

Durability and Reliability: With hardened and precisely ground steel ball rolling contact surfaces, roller screw support bearings offer extended service life and accuracy retention. They have low failure rates and require simple maintenance, usually involving routine lubrication and dust protection. In certain applications, they can even operate without lubrication, showcasing their high reliability.

Synchronicity and Rigidity: Smooth motion, responsiveness, absence of stalling or slipping enable roller screw support bearings to achieve excellent synchronization when driving multiple components or devices simultaneously. Moreover, appropriate preload forces can enhance rigidity, reducing elastic deformation and further enhancing transmission accuracy.

Safety Features and Reversibility: While roller screw support bearings lack self-locking capabilities and exhibit transmission reversibility, practical applications can incorporate measures such as anti-reversal devices (e.g., brake motors, stepper motors, worm gear drives) to prevent reverse motion. Additionally, safety devices to prevent nut disengagement accidents should be considered during design.

In summary, roller screw support bearings are indispensable core components in modern manufacturing due to their efficient, smooth, and highly precise transmission performance. Whether in precision manufacturing, automated equipment, or other fields, they play a crucial role in ensuring torque accuracy and spindle stability.

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