Basic structure of rolling bearings

The role of the bearing part is to support the pump shaft and reduce the friction resistance of the pump shaft when rotating. Bearings can be divided into rolling bearings and plain bearings according to different frictional properties. Auto Craft Wheel Bearing
Bearings that rely on rolling friction to work are called rolling bearings. Typical rolling bearings are usually composed of 4 components, inner ring, outer ring, rolling body and cage, the inner ring is installed on the journal, the outer ring is installed in the bearing hole of the frame. Usually the inner ring is rotated with the journal and the outer ring is fixed, but some are rotated with the outer ring and the inner ring is fixed. When the inner and outer rings rotate relative, the rolling element rolls in the raceway of the inner and outer rings. The function of the cage is to separate the rolling elements evenly. The rolling element is an indispensable part in the formation of rolling friction in the bearing. Commonly used rolling bodies are ball, short cylindrical roller, long cylindrical roller, spiral roller, conical roller, spherical roller and needle roll 7 forms

Rolling bearings are easy to use and maintain, reliable to work, good starting performance, and high bearing capacity at medium speed. Compared with plain bearings, rolling bearings have large radial size, poor shock absorption ability, low life at high speed and larger sound.

The failure form of rolling bearings is fatigue pitting and plastic deformation, to extend its service life and maintain its rotating accuracy, the bearings should be maintained in time during the operation of the centrifugal pump, the use of reasonable lubrication and sealing, and often check the lubricating oil and sealing.