In order to maintain the original performance of HRB bearings in good condition for as long as possible, it is necessary to maintain, overhaul, in order to prevent accidents in the future, ensure the reliability of operation, improve productivity and economy. Maintain the best operating standards for the appropriate mechanical operating conditions, regularly. This includes monitoring operation status, replenishing or replacing lubricants, and periodic disassembly inspections. As maintenance matters in operation, there are rotational sound, vibration, temperature, lubricant state and so on of angular contact ball bearings.

Bearing cleaning: when disassembling the bearing for maintenance, first record the appearance of the bearing, confirm the residual amount of lubricant, and wash the bearing after sampling the lubricant used for inspection. As a cleaning agent, the general use of gasoline, kerosene.

The cleaning of the removed bearings is divided into coarse cleaning and fine cleaning, respectively, placed in the container, first put the metal mesh bottom, so that the bearing does not directly contact the dirt of the container. When rough cleaning, if the bearing rotates with dirt, it will damage the rolling surface of the bearing, and attention should be paid to it. In the crude cleaning oil, use the brush to remove grease, sticky matter, roughly clean, into fine washing.

Fine cleaning: the HRB bearing is carefully cleaned while rotating in the cleaning oil. In addition, cleaning oil should always be kept clean.

Bearing maintenance and judgment: In order to judge whether the removed bearing can be used, check the angular contact ball bearing after it is cleaned. Check the state of raceway surface, rolling surface, mating surface, cage wear, bearing clearance increase and unrelated dimensional accuracy reduction of damage, abnormal. Non-separated small ball bearings, then use one hand to support the inner ring level, rotating the outer ring to confirm whether it is smooth.

Angular contact ball bearings and other separated bearings can check the raceway surface of the rolling body and outer ring respectively.

Large bearings can not be rotated by hand, pay attention to check the appearance of the rolling body, raceway surface, cage, edge surface and so on. The higher the importance of bearings, the more carefully they must be checked.

The cause of HRB bearing overheating may be incorrect installation. Skewed installation will cause the ball not to roll in the correct position of the bearing raceway, and even cause a large axial force between the ball end face and the inner seat ring and the outer seat ring stopper of the bearing seat, resulting in bearing overheating.

Another is likely to be the size of the diameter of axle and bearing hole measurement inaccuracy or cooperate with surface roughness, do not meet the standard requirements to cause excessive interference fit, the bearing race is being squeezed from a large, resulting in HRB bearing radial clearance to reduce itself, difficult to rotate the angular contact ball bearing, fever, wear or stuck, Serious will cause bearing inner and outer seat rings in the installation.

The anti-friction bearings in all bearings essentially consist of two hardened steel rings, hardened balls or rollers, and a separator or cage for separating rollers or rollers. These types are divided into many categories in use. Some types, such as needle column bearings, may have no inner ring and the rollers move directly on hardened shafts.

In practice, it may be necessary to use more grease than recommended. When the torque required is low, only very little grease is needed to complete the lubrication of the bearing. When the speed is very low and the HRB bearing is exposed to dust or moisture, the bearing may be nearly filled. Angular contact ball bearings usually need more frequent lubrication than normal under high speed and high temperature conditions.

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