Bearing raceway is due to the bearing rotates roller in roller in rolling and stimulate the smooth and continuous noise, only when the sound pressure level or tone of voice greatly to cause people to pay attention to. In fact, rolling road sound excited by acoustic energy is limited, such as in normal circumstances, high-quality 6203 deep groove ball bearings roll say 5 to 27db. Deep groove ball bearing this noise to bear radial load is the most typical, it has the following characteristics.
First, the frequency of vibration in more than 1kHz.
Two, the bearing rigidity increases, the lower the total sound pressure, which makes the type of speed increase and the total sound pressure level is slightly increased.
Three, the higher the viscosity of the lubricant, but the lower the sound pressure level, the viscosity of the grease, the shape and size of the soap fiber can affect the noise value.
Four, no matter how to change speed, noise frequency and sound pressure level is almost the same as