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How does radial clearance in inserted bearings affect operating performance?

1. Swing and rotation characteristics: The radial clearance of the inserted bearing is crucial to its performance in swing and rotation motions. Proper radial clearance ensures that the bearing has smooth swing characteristics during operation and avoids excessive swing or sticking. For example, for applications that require frequent swings, such as robot arm joints, a moderate radial clearance can ensure that the bearings are not blocked during swings, ensuring the movement accuracy and stability of the entire system.

2. Axial stiffness: The size of the bearing radial clearance is closely related to the axial stiffness. Moderate radial clearance can improve the axial stiffness of the bearing and ensure that the bearing remains stable under load. Taking wind turbines as an example, appropriate radial clearance helps the bearing maintain high axial stiffness when subjected to changes in wind direction, ensuring that the wind turbine blades can maintain good working condition under various wind conditions.

3. Axial load capacity: The size of the bearing radial clearance directly affects the axial load capacity. Proper clearance helps the bearings bear axial loads and ensures system stability. In automobile wheel hub bearings, appropriate radial clearance can effectively reduce the impact of axial load on the bearings and improve the vehicle's controllability and driving stability.

4. Operating noise and vibration: The radial clearance of the inserted bearing is closely related to the noise and vibration generated during operation. Proper clearance helps reduce friction and vibration and improves the smooth operation of the bearing. In the spindle bearings of precision machine tools, appropriate radial clearance helps reduce vibration levels and ensure machining accuracy and surface quality.

5. Temperature rise: Bearings will produce a certain temperature rise due to friction during operation. Appropriate radial clearance helps reduce the generation of friction heat and reduces the temperature rise of the bearing. In the bearings of high-speed motors, moderate radial clearance helps reduce friction heat, ensures that the temperature of the motor is stable within a controllable range when the motor is running, and extends the service life of the equipment.

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