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/*728*90 created on 2018/5/16*/ var cpro_id = "u3440131"; Home>Bearing knowledge> Reasonable selection of rolling bearing clearance Reasonable selection of rolling bearing clearance
Clearance is an important factor in the normal operation of the bearing. Select the appropriate bearing clearance; the load can be distributed between the rolling elements, and the axial and radial displacement of the shaft (or casing) can be constrained to ensure the rotation of the shaft. Accuracy enables the bearing to operate normally at the required temperature, which can reduce the oscillation and noise during the bearing operation; it can be seen that the bearing clearance has a great influence on the bearing life, temperature rise, oscillation and noise. When bearing clearance; in addition to the bearing operating conditions (such as load, speed, temperature, etc.) and the need for bearing performance (such as friction torque, oscillation and noise, rotation accuracy, etc.); should also consider: /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';
1. The interference between the bearing and the shaft and the outer casing leads to a reduction in clearance.
2. When the bearing is working; the temperature difference between the inner and outer rings causes the clearance to decrease.
3. The production data of the shaft and the casing are reduced or increased due to the different expansion coefficients.
The application experience indicates that the most suitable working clearance for ball bearings is approximately zero, and the most suitable working conditions for roller bearings should adhere to a small amount of working clearance. In the case of demanding rigid parts (such as machine tool spindles); Preload with a certain value.
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Source: China Bearing Network Time: 2014-03-29