Bearing raceway noise, referring to when the bearing for high-speed rotary motion, the bearing rolling elements rolling noise generated in the raceway for the bearing raceway sound frequency, its value is greater. Next, the main reason it caused SKF bearing raceway sound phenomena were analyzed.
1, the inner diameter of the bearing balls uneven, in the course of the operation, and generate friction between the inner and outer rings.
2, the installation process, because there is no use of professional installation tools, or for other reasons, so that uneven force bearing in operation, leading to irregular bearing ring sound.
3, the bearing clearance is too small, will make the raceway sound reduction with radial clearance increases.
4, due to the presence of inner and outer work surface uneven phenomenon bearing production, even if this injustice is subtle, also affect the rolling of the rolling elements, resulting in the emergence of raceway sound.
5, SKF bearing raceway total sound pressure level is inversely proportional to the rigidity of the bearing, that bearing rigidity smaller, the total sound pressure level raceway.
6, running faster speed, total sound pressure level raceway also increases.
7, the viscosity of the lubricant is also important for the overall sound pressure bearing influence, an inverse relationship between them, that is, the lower the viscosity of the bearing lubricant, the higher the overall sound pressure level generated. For grease lubrication, its noise level is also directly related to the viscosity of grease, soap fiber shape size.
    Raceway sound relationship between the size of the entire size of the mechanical noise, it is necessary to strictly raceway sound control methods are mainly the following two: First, SKF bearings precision improved, but should be aware that, even with the best manufacturing Technical working surfaces there will tiny geometric errors, leading to the natural vibration of the rolling element and raceway. The second is to improve the lubrication conditions.

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