Preload of rolling bearings

Source: China Bearing Network Time: 2017-10-26

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The internal clearance (original clearance) in front of the bearing device is different from the internal clearance of the bearing (referred to as the working clearance) when the device reaches the operating temperature; the former is large; it is different from the use occasion; many require negative running clearance; that is, the load is applied; The preload is to ensure that the bearing is damaged due to slippage under the load conditions used when mating.
The primary effect: improve bearing stiffness; reduce running noise; compensate for increased clearance during wear; improve the guiding accuracy of the shaft;
Pre-stress is often the primary target (additional dynamic load Cr) coefficient; the optimal pre-loading load also needs to calculate the pre-pressure first; after the experiment proves that the conventional value is corrected after correction; after different conditioning methods are implemented.

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