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Bearing the causes of noise are more complex, one is the inner and outer rings mating surfaces of the bearing wear. Because of this wear, undermined the bearing shells, rolling bearings and shaft meet relationship, causes the axis deviates from the correct location, noise resulting from the axis in high-speed motion. When you TIMKEN bearing fatigue, its surface metal flake, also bearing radial clearance increases the noise. In addition, insufficient lubrication of the bearing, the formation of dry friction and bearings broken produces abnormal noises. After bearing wear loose, loose cage damage, would also have abnormal noise.
Raceway on bearing raceways and moderation when the sound when a TIMKEN bearing operation, its move is being issued to move on Raceway surface slippery kind of sound, what are the bearing seal type?. Is free to move without sound foundations bearing cities. General roller bearing sound equal to say, combined with other sounds. Ball bearing Raceway is irregular, frequency is above 1000Hz, the frequency does not change with the speed of it, but its sound pressure level as the acceleration of speed and Add. Raceway loud bearing Raceway on its acoustic sound pressure level as the viscosity of add and cut Raceway TIMKEN bearings are small, the sound pressure level of viscosity by adding up to about 20mm2/s above, from reduced to nothing by deleting it. Greater the rigid housings, rolling road, lower the sound of the sound pressure level. Such as radial visiting too small a gap, Raceway acoustic sound pressure level and frequency from the fight goes round in radial clearance of cuts sharp added. Voice of moderation Raceway none: very small selection of low noise bearings which waviness of bearings, carefully chosen to use premise. Rolling road sound effects often zero mechanical noise, cutting Raceway can cut zero mechanical noise.
Moving impact sound and how it is measured in a large model of ball bearings or bearings is purely radial load and low speed operation, smaller due to the centrifugal force of the move, the move will shock load-free area in links or raceways and making noises. But with anti-speed forward, that kind of sound will be inclined. Voice of moderation is no impact on the move: proper radial cuts visit the gap, use of material without mild without reasonable layout of links bearing.
TIMKEN bearings creak and moderation creak is no place can occur to the bearing is jarring unpleasant metal sound, larger models mostly was grease lubrication bearings which are outside the functional deterioration of the base oil grease more difficult, being almost did not occur when the oil lubrication. In addition, is happening in the winter time is more difficult, when under purely radial load, is radial visit-gap-big places of light, and model size difference is speed of light within the context of a particular difficult, both will continue to occur and batch flush. External ring road to adopt special processing approach to anti-creak of the line formed, selection when you need that kind of bearings, or proper bearing radial cuts visit the gap, using inferior function show grease and former progressive rigidity of bearing matching parts.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 30202 NSK | 15 | 35 | 11.75 |
| 629ZZ NSK | 9 | 26 | 8 |