Analysis of the Causes of Damage in Bearing Maintenance Treatment
Release time:
2023-08-28
The noise of the ball bearing dovetail guide is irregular, its frequency is above 1000Hz, its main frequency does not change with the speed ratio, but its total noise coefficient increases with the increase of the speed ratio. For the bearing with high raceway noise, the noise figure of the raceway noise decreases with the increase of viscosity, but when the viscosity of the bearing with low raceway noise increases to 20mm 2/s or more, the noise figure changes from decrease to increase to a certain extent. The greater the stiffness of the seated bearing, the smaller the total noise figure.
The dovetail guide rail sound of imported bearings and the raceway sound of control measures are a kind of sliding and continuous sound transmitted by the turning body of non-standard bearings on the dovetail guide rail surface when the unilateral bearing is running. It is the unique basic sound generated by all turning bearings. The general sound of imported bearings is the sound of dovetail guide rail plus other sounds.
The noise of the ball bearing dovetail guide is irregular, its frequency is above 1000Hz, its main frequency does not change with the speed ratio, but its total noise coefficient increases with the increase of the speed ratio. For the bearing with high raceway noise, the noise figure of the raceway noise decreases with the increase of viscosity, but when the viscosity of the bearing with low raceway noise increases to 20mm 2/s or more, the noise figure changes from decrease to increase to a certain extent. The greater the stiffness of the seated bearing, the smaller the total noise figure.
When the axial backlash is too small, the total noise figure and the dominant frequency of the drum sound increase greatly with the decrease of the axial backlash. The way to control the roller sound is to use low-noise imported bearings, that is, small corrugated bearings, and carefully select the application standard. Drum sound often harms the noise of all machinery and equipment, and reducing the dovetail rail sound can reduce the noise of all machinery and equipment.
The impact sound of the turning body and its control measures When the large-size ball bearing or cylindrical roller bearing runs at low speed under pure axial load, because the centripetal force of the turning body is small, the turning body in the non-load area will hit the ball bearing or dovetail guide rail and transmit noise. But as the speed ratio increases, this noise disappears. The control measures for the impact sound of the overturning body are to reduce the axial side clearance moderately, apply effective structure, and raw materials are imported bearings with smooth ball bearings.
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