How to guarantee the service life of NSK bearings

It is important to keep the NSK bearings and lubrication clean.
Clean the surface of the machine before inspection and then remove the parts around the NSK bearing. The oil seal is a very fragile part, so be careful to disassemble it. Do not apply excessive force. Then carefully check the oil seal and its surrounding parts. If it has shown bad symptoms, be sure to replace it. Poor oil seal will cause NSK bearing. Damage and severe equipment downtime.
Cover the exposed NSK bearings:
When inspecting NSK bearings, never expose NSK bearings to contaminants or moisture. If the work is interrupted, the machine should be covered with a piece of oil-paper plastic or similar material.
If the unshielded NSK bearing is cleaned without performing disassembly and may be inspected, wash it with a white spirit with a brush for application, then dry it with a lint-free cloth or blow it with compressed air. Dry (be careful not to let the NSK bearing assembly start to rotate).
Check the lubricant:
Apply a little bit of lubricant to the friction between the two fingers. If any contaminants are present, feel it, or apply a thin layer of lubricant on the back of the hand, then seal the light.
Replace the lubricant:
Oil-lubricated NSK bearings, after draining the old oil, if possible, refill with fresh oil and allow the machine to spin at low speed for a few minutes. Whenever possible, the oil collects the contaminants from the wreckage and then vents the oil. The oil is preferably filtered before use.
Grease-lubricated NSK bearings should be replaced with a cotton joint to any part of the NSK bearing when replacing the grease, as these residual fibers may wedge between the rolling elements and cause damage. In particular, the application of small NSK bearings needs to pay attention to this problem.

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Identify TIMKEN bearings with sound

      The sounder is used to check the size and sound quality of the rolling sound of the running TIMKEN bearing. Even if there is slight peeling damage, the TIMKEN bearing will emit abnormal sounds and irregular sounds, which can be distinguished by the sounder.
listen
Using auditory to identify irregular movements is a very common approach. For example, using an electronic stethoscope to detect abnormalities in a part is often a method used by experienced operators.
If the TIMKEN bearing is in a good continuous state, it will make a low humming sound. If a sharp voice is heard, the voice and other irregular sounds often indicate that the TIMKEN bearing is in a bad transition condition.
Sharp squeaking noise can be caused by improper lubrication. Improper TIMKEN bearing clearance can also cause metallic sound. The indentation of the concave track on the outer ring of the TIMKEN bearing causes vibration and produces a smooth and crisp sound. If the knocking damage caused by the installation also produces noise, the noise will vary with the speed of the TIMKEN bearing.
If there is intermittent noise, the rolling parts may be damaged. This sound occurs when there is a contaminant in the TIMKEN bearing when the damaged surface is crushed. Severe co-response damage can create irregular and huge noise.
TIMKEN bearing damage can be detected by hearing, but usually TIMKEN bearings must be replaced immediately. Therefore, a preferred method uses, for example, an electronic condition monitoring instrument. A more accurate estimate of the TIMKEN bearing condition than using the old method with a wooden stick.

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