Imported the bearings regularly check noise abatement method

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Regular inspection of the bearing in the best condition for maintaining the bearing is a very important work, also can embody discovered the problem. Bearing in use should be noted that the matters related knowledge.
First, we want to emphasize is that it is very importa nt to keep the imported bearing lubrication and clean. So when we check the bearings before, you should first clean the bearing surface, then remove the bearing surrounding parts. It should be noted that the oil seal is very fragile parts, so need to be extra careful inspection and disassembly, do not use excessive force, in order to avoid damage to the parts. Then carefully check the bearing oil seal and its surrounding parts, have shown adverse symptoms, be sure to replaced, poor seal can cause damage to the bearing, the bearing cloud like not normal equipment downtime.
Secondly, we need to check the bearing lubricant. Lubrication is very important, not only for imported bearings, but also for all the bearings. Note, however, should not add too much grease bearings.
About the inspection method of the bearing lubricant is:
The stained little bit of lubricant between two fingers friction, if the contamnt is feeling out; coated with a thin layer of lubricant in the back of the hand, and then seal ray examtion.
Then, is to replace the bearing lubricant.
Imports using oil lubricated bearings in diarrhea after the old oil, if you can, it should be re-poured fresh oil and let the machine a few minutes at low speed rotation. As much as possible so that the oil collected the remnant contamnts, and then spilled addition to these oil. Note: Oil is best to use filtered. Joe addition to replacement of grease, the use of grease lubricated bearings should be avoided with cotton material then angle to the bearing of any parts. Because these residual fibers may be wedged in between the rolling elements and damage, especially small bearing should pay more attention to this problem.precision bearings
(1) bearing raceway sound and its control method
The raceways sound when the operation of the imported bearings, rolling element raceway scroll issued a slip pery continuous sound, a unique sound all Rolling occurs. The general sound of the bearing raceway sound and other sound. The ball bearing raceway sound is irregular, the frequency of 1000Hz or more, its main frequency does not change with the speed, but the total sound pressure level increases with engine speed to accelerate. Roller Daosheng large bearing raceway sound SPL is reduced with the increase in viscosity; small bearing raceway sound, the level in the viscosity is increased to more than about 20mm2 / s, by reducing transfer is somewhat increased. The greater the rigidity of the bearing raceway sound overall sound pressure level is lower. Such as the radial clearance is too small, the total sound pressure level and the main raceway sound frequency will be increased dramatically with the reduction of the radial clearance. Control raceway sound: the import bearings that use low-noise bearing waviness small, carefully selected conditions of use. The raceways sound ofte n affect the mechanical noise to reduce the raceways sound can reduce the noise of the machinery.
(2) the impact of the rolling element sound and its control method
The larger models of ball bearings or cylindrical roller bearings in a purely radial load low speed operation, due to the centrifugal force of the rolling bodies is smaller in the non-load zone of rolling element will impact the holder or raceway noise. As the speed increases, the sound will disappear. The rolling impact sound control methods: appropriate to reduce the radial clearance, reasonable structure and supple cage bearing material.bearing factory
(3) bearing the jarring sound and its control method
Jarring sound cylindrical roller bearings the harsh metal friction sound may occur on all occasions, mostly in the larger models bearing grease lubrication, and more susceptible to performance degradation of the base oil greas e, oil lubrication almost does not occur. In addition, in the winter are more prone to radial clearance occasions, when exposed to pure radial loads, prone, and different with the model size, likely to occur within a certain speed range, both occur consecutively will intermittently appear. Outer ring raceway take special processing method can prevent the jarring sound appear necessary choice of this bearing, or appropriate to reduce the radial clearance of imported bearings, excellent grease and improve with bearings to match parts rigidity.