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NSK bearing vibration was largely caused by the vibration of the bearing rings, and bearing structure, stiffness, precision manufacturing, installation conditions and situations and other factors. NSK bearing inner ring raceways have a greater radial corrugation, circle rotation will result in bearing outer ring radial vibration. Bearing within ring of corrugated not only will caused outer ring of radial vibration, and also will caused outer ring of axis to vibration, bearing in by axis to load Shi on will makes bearing within, and outer ring of axis to relative location occurs change, therefore in within ring turning Shi bearing outer ring also on produced has axis to vibration mouth shaker in work Shi, for high-speed turning of bearing,, due to corrugated caused of vibration frequency, has may is equal to stress vibration Manager axis of turning frequency, that produced resonance.
Lubrication of NSK bearing repair mode: lubricated bearing internal smoothing agents generally can divided into oil and grease two.
Repair methods: preparation: dry cleaning towels, sharp claws, bearing the night, bearing smooth smooth oil or grease.
1, boring: in NSK bearing from the cleaning solution and wipe dry towel cleaning fluid, and put in a cool place to dry.
Cleaning fluid
2, bearing: bearing bearing cleaning solution soak you bought on the market, and swing at this point, bearing internal foreign bodies are swaying, some store bought the ultrasonic cleaning machine for eliminating foreign bodies also sponsored.
3 smooth, injection agent based on trends to grease or oil into the bearings, cover with cover from the new install the c-shaped rings.
4, remove the c-shaped rings and shroud: dirty stuff off the inside bearing with a dry towel, then tip pliers c shaped ring on one side of c shaped rings and cages to win.
5, detection: bearings already assembled into the original situation grasp with your fingers ring behind line several times in rotation.
Frictional vibration mainly refers to the abnormal vibration of NSK bearings, friction generally prone to vibration in large ball bearings, grease lubrication in particular are more likely to occur when the lubricity of the grease is not good. Based on experiment and observation, NSK bearing's friction and vibration produced often direct relationship with the lubricating oil. When the poor performance of lubricating oil or clean, are prone to friction and vibration, but also with the NSK bearing Raceway quality related, if used special precise machining method, the better the friction and vibration control.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 239/670CAKE4 NSK | 670 | 900 | 170 |
| 232/630CAKE4 NSK | 630 | 1150 | 412 |