Bearing jarring sound and control jarring sound is a cylindrical roller bearings on all occasions that may occur harsh sound of metal friction occurs mostly in grease lubricated bearings in larger models, while in the performance degradation of lubricating base oil tallow more likely, in almost no oil lubrication.
First, the rolling sound and control the impact of the larger models ball bearings or cylindrical roller bearings in pure radial load low speed, the centrifugal force due to rolling body is small, in a non-load zone of rolling element will impact cage or raceway and noisy. However, as the speed increased, the sound will disappear.
Followed by high temperature bearing raceway raceway sound and control the sound is running when the bearing, the rolling body raceway rolling issued a slippery continuous sound, all bearing the unique occur basic sound . Sound that is generally bearing raceway sound with other sounds. Ball bearing raceway sound is irregular frequencies above 1000Hz, its main frequency does not change with the speed, but the acceleration of its sound pressure level increases with the speed.
Bearing raceway loud, the sound pressure level of its raceway with the viscosity decreases with increasing; while the sound of a small roller bearings, and its level increased in viscosity to about 20mm2 / s or more, by reducing the transfer is somewhat increased. Greater rigidity of the bearing seat, roll sound pressure level is lower. If the radial clearance is too small, the rolling sound pressure level and the main frequency will decrease as the radial clearance increased sharply, if you do not want it to sound, the best way is to turn off the power, Oh, in fact, we can use a number of measures to maximize the reduction in bearing noise, in general, to control the effects of noise rolling bearing, must address these root causes of noise take measures in order to receive a permanent cure results.
In addition, more prone to winter, when the bearing is subjected to pure radial load, radial clearance prone to big occasions, and with models of different sizes, at a particular speed range prone to both continuously will occur intermittently appears. Outer ring raceway take special processing methods to prevent the emergence of creaking, if necessary, use this high temperature bearings, or appropriate to reduce the radial clearance, using excellent performance match with the bearing grease and improve parts of the rigidity.
Product Model | Inside Diameter | Outside Diameter | Thickness |
7312BDB NSK | 60 | 130 | 31 |
7312ADB NSK | 60 | 130 | 31 |