Sound of raceway is affected by the bearing load

1. Bearing noise and vibration has obvious randomness; 2. The average amplitude of vibration frequency are above 1 KHZ; 3. No matter what the speed change, noise is the main frequency of almost the same; 4. When the bearing radial clearance increases, the sound pressure level will increase sharply; 5. Bearing stiffness increases, the lower the total sound pressure level, even if the speed increases, the total sound pressure level increases; 6. Lubricant viscosity is higher, the lower the sound pressure level, but for grease lubrication, the viscosity, the shape of soap fiber size can influence the noise value.