After installing the bearing, the overturned components and annular raceway are in a moderate prestressed reinforcement condition, which is called the prestressed reinforcement of the bearing. The purpose of bearing preload is to improve the rotation accuracy and bending stiffness of support points during the whole process of operation, reduce vibration and noise, and reduce the relative sliding of bearing swivel caused by inertia force, torque and other elements in the dovetail guide of inner and outer bearings. Preloading is generally applied to angular contact bearings and shafting with high rotation accuracy and bending stiffness.
The common axial torque method can obtain the appropriate preload according to the specification of the adjusting shaft sleeve or washer. Appropriate preload can also be obtained according to the relative speed torque of the control. The bearing can also be used to adjust the fixed preload. Double bearing pairs. After the axial preload is applied, the relative position of the bearing will remain unchanged during application. The bearing can also be applied with compression spring, torque wrench, etc. to exert moderate preload.
