(1) bearing raceway and sound control method is SKF bearings in operation, in a continuous rolling surface, production base with distinct characteristics. That is to say, the whole sound with other sounds of bearing. The ball rolled irregular, above the 1000Hz frequency, the main frequency, it will not change the speed of change, but the overall rapidly increasing the speed of sound pressure level. The bearing stiffness is larger, the runway minimum sound pressure level. The radial gap that is too small, bearing the total sound pressure level and frequency track and reduce the radial clearance increases greatly. Control of raceway acoustic: optional low noise bearing pulsating method, "Wei often affects the entire mechanical noise, noise reduction machine roller can reduce the general noise.
(2) the ball and the ball bearing or bearing the pure radial load of large acoustic mode influence, in low speed operation, due to the centrifugal force of the driving effect of rolling in non - small area load the raceway and noise in the cage or. However, as the speed increases, the noise will disappear. Influence of method, to control its operating funds include: appropriate reduction of radial clearance, the use of a rational structure of FAG bearings cage flexibility.
(3) bearing discordant noise and sound control shock bearing, bearing metal friction every harsh opportunities, mainly in the fat lubrication bearing in the larger models, and in the degradation of petroleum based on any more prone to oil, lubricating oil. In addition, more likely to happen in winter, when pure radial load, radial clearance and special occasions of the vulnerable, and at a certain speed, the size of two different types of high, will also have a continuous and intermittent. The outer ring rolling of special treatment, to prevent the emergence of discordant voices, if any, can the NSK bearings selection, or appropriate to reduce the bearing internal clearance, performance and bearing grease is excellent and the matching part improved stiffness.