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1 bearing noise, vibration has obvious randomness;
2 the average vibration frequency range are above 1kHz;
3 no matter how changes in speed, noise frequency is almost constant;
4 when the bearing radial clearance increases, the sound pressure level will increase rapidly;
The 5 bearing seat rigidity increases, the lower the total sound pressure level, even if the speed increased, the overall sound pressure 6002-2z dimensions level increases slightly;
6 the lubricant viscosity is high, the sound pressure level is low, but for grease lubrication, the shape and size of 6002-2z dimensions the viscosity, the soap fiber can affect the value of the noise.