Date: 2013-08-20

SKF bearings failure prevention matters requiring attention

Institutional operation, install bearing parts allows a certain degree of temperature, when you touch body shell with your hand, should not feel hot to normal, instead it indicates that the bearing temperature is too high.
Bearing high temperature causes are: quality does not meet the requirements or deterioration of lubricant, lubricant viscosity is too high; body fitted too tight (insufficient gap), SKF bearings Assembly too tight; bearing washer on the shaft or in the shell rotation; load too large; bearing cage effects of fragmentation, such as or.
Raceways due to SKF bearing rolling body Raceway when rotating scrolling and fires in a smooth and continuous noise only when its sound pressure level or tone only when great attention. Raceway in fact inspired by the sound of sound energy is limited, such as in normal cases, high quality sound 6203SKF bearing Raceway for 25~27dB. This noise to withstand the radial load of SKF single row deep groove ball bearings are the most typical, it has the following features:
A. noise and vibration random;
B. vibration frequency of more than 1kHz;
C. regardless of the speed change, noise main frequency is almost unchanged while the sound pressure levels increase with the speed increase;
D. when radial internal clearance increases, sharp increase in the sound pressure level;
E.SKF rigid bearing increases, lower the overall sound pressure levels, even if the speed increased, the overall sound pressure levels also increase is unlikely;
F. lubricant viscosity higher sound pressure levels lower, but for grease lubrication, its viscosity, SOAP shape size can affect the noise values of the fiber.
Rolling road sound source is due to ring the inherent vibration after the load. Due to the rings and rolling elements of nonlinear vibration of elastic contact form system. When lubricating or when machining accuracy is not high stimulation and the inherent vibration of elastic features, passing into the air becomes noise. As we all know, even using the most highly skilled manufacturing technology of processing components of SKF bearing, its surface will always exist with varying degrees of tiny geometric errors, so that between the raceways and rolling elements produce micro-wave excited vibration inherent vibration.

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