The bearing race refers to the irregular Circular motion or axial movement of the bearing during rotation, rather than the stable axial alignment and rotation. Bearing race is a common bearing failure that can be caused by multiple factors.
The following are some common reasons that may cause bearing races to run:
1. Incorrect installation of bearings: If the bearings are not properly aligned during installation, or if the axial clearance is too large or too small, it may cause the bearings to run out of rings.
2. Bearing wear: Bearing wear may cause irregular geometric shapes between the inner and outer rings or rolling elements, resulting in bearing race.
3. Incorrect bearing preload: Incorrect preload of the bearing can cause instability of the bearing and cause ring running problems.
4. Loose shaft or bearing seat: Looseness of the shaft or bearing seat can damage the stability of the bearing, leading to running rings.
5. Unbalance or eccentricity: The imbalance or eccentricity of the fan rotor can cause additional vibration, leading to bearing race.
The following are some recommended methods for dealing with bearing race issues:
1. Inspection and diagnosis: Use appropriate tools (such as vibration analysis, sound detection, etc.) to inspect the fan bearings and determine the specific cause of the running ring problem.
2. Adjusting the preload: According to the guidance and technical information of the bearing manufacturer, adjust the preload of the bearing to ensure that the preload is within the appropriate range.
3. Adjust the installation position: Reinstall the bearings, ensure that they are correctly aligned with the shaft and bearing seat, and ensure that the axial clearance meets the specifications.
4. Replace worn bearings: If the bearings are severely worn and cannot be restored, they need to be updated in a timely manner.
5. Balance adjustment: Balance the fan rotor to remove imbalance or eccentricity and reduce the impact on the bearings.
6. Fix loose parts: Check and tighten the shaft and bearing seat to ensure they are not loose and provide stable support.
7. Regular maintenance: Establish and implement appropriate maintenance plans, including bearing lubrication, cleaning, and inspection, to prevent the occurrence of race problems.
We need to consider the above suggestions comprehensively based on the specific situation and bearing type, and refer to the manufacturer's suggestions and technical information to solve the problem of bearing race. If the problem cannot be solved, it is recommended to consult Shanghai Anding Yitai Technical Engineer 136-2180-8094
