How to Check Bearings
The checking of bearings should be carried out during their operational phase to detect any anomalies in noise levels, the temperature reached, or vibrations produced. Using appropriate equipment (stethoscope and thermocouple), it is possible to quickly identify deviations in noise and temperature, which can help detect potentially harmful situations that should be addressed promptly.
Bearings on Moving Parts and Grease
In cases where the bearing is mounted on a moving part and it is not possible to check noise or temperature using the devices briefly mentioned above, it is still possible to perform periodic inspections, apply fresh grease, and observe its operation.
Regarding grease, it should be noted that—although lubricant is essential for the proper functioning of bearings—it is not necessary to use excessive amounts to ensure good usability. The amount of lubricant will depend on the type of bearing, its size, the number of revolutions, operating conditions, and other specific characteristics indicated in the user manuals. Also, the frequency of lubricant application and replenishment depends on the type of grease: some types require longer lubrication intervals than others.
As for oil lubrication, it is advisable to maintain an oil level equal to that of the housing indicator: if the quantity is below the expected level, simply refill it. Periodically, it is also necessary to consider replacing the oil: the frequency of this operation depends on the operating conditions and, in particular, on the temperature at which these components are used.
Disassembly and Replacement
If during these inspection phases the bearing shows anomalies that warrant further checks, it will be necessary to proceed with the disassembly of the element. We will discuss bearing disassembly in a dedicated article. For now, it is sufficient to remember that if disassembly reveals damage, spalling, or other impairments to this component, it may be advisable to proceed with its replacement.