Daily maintenance and common causes of bearing failure
Feb 04,2026
1. Core maintenance points (universal for industrial equipment, reducing failure probability)
More than 80% of bearing failures are caused by poor lubrication, improper installation, and dust pollution. Daily maintenance focuses on "preventing pollution, ensuring lubrication, and accurate installation" as the core:
Lubrication management: Regularly replenish/replace lubricating grease for grease lubrication (generally 3-6 months according to equipment operating conditions), ensure oil level for oil lubrication, filter and replace oil regularly, and prohibit mixing different types of lubricating grease;
Sealing protection: Check the sealing components (rubber rings, dust covers) in a timely manner, replace them immediately if they are damaged, and prevent dust and moisture from entering the interior of the bearing;
Installation and disassembly: Use specialized tools (puller, press sleeve), and do not directly strike the outer/inner ring of the bearing to prevent bearing deformation; Ensure that the interference fit between the shaft and the bearing is appropriate during installation. If it is too loose, it may slip, and if it is too tight, it may cause clearance to disappear;
Condition monitoring: Regularly check the bearing temperature (normal ≤ 70 ℃, shutdown inspection is required if it exceeds 80 ℃), noise (abnormal noise is mostly caused by excessive clearance or rolling element wear), and vibration. Heavy equipment can be equipped with temperature/vibration sensors for real-time monitoring.
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