Most of the rotating machinery in factories is driven by electric motors, and the quality of the electric motor is related to the smoothness of the bearings used. This requires bearings with low noise, economy, and simple support structures; deep groove ball bearings are typically chosen.
Motor bearings, also called electric motor bearings or motor bearings, are specialized bearing products used in electric motors. A motor bearing is a component that supports the shaft; it guides the shaft's rotation and can also support rotating parts on the shaft. The concept is broad. There are four common types of motor bearings: rolling bearings, plain bearings, spherical plain bearings, and oil-impregnated bearings. The most common type of motor bearing is the rolling bearing, which has rolling elements. Plain bearings generally refer to bearings without rolling elements, i.e., bearings that slide or slide.
Composition of motor bearing designation:
1. Prefix code — indicates the component of the bearing.
2. Basic designation — indicates the bearing's type, size, and other main characteristics.
3. Suffix - indicates the bearing's precision and material characteristics.
Working principle of motor bearings
Motor rolling bearings utilize smooth metal rolling elements and lubricated inner and outer ring metal surfaces to reduce friction. These balls or rollers "bear" the load, support the motor shaft, and allow the motor (rotor) to rotate smoothly.
Common bearing models for electric motors
Y2 series motor bearings
Shaft extension: 6201-2E-C3, 6202-2E-C3, 6204-2E-C3, 6205-2E-C3, 6206-2E-C3, 6308- 2E-C3, 6311-C3, 6312-C3, 6313-C3, 6314-C3, 6317-C3, 6319-C3, NU319, NU322
Fan end: 6201-2E-C3, 6202-2E-C3, 6204-2E-C3, 6205-2E-C3, 6206-2E-C3, 6308-2E-C 3. 6309-2E-C3, 6311-C3, 6312-C3, 6313-C3, 6314-C3, 6317-C3, 6319-C3, 6322-C3
YSJ series compressor dedicated motor bearings
Shaft extension: 6204-2E-C3, 6205-2E-C3, 6206-2E-C3, 6308-2E-C3, 6309-2E-C3, 6311-C3, 6312-C3, 6313-C3, 6314-C3, 6317-C3, 6319, 6319-C3, 6322
Fan end: 6204-2E-C3, 6205-2E-C3, 6206-2E-C3, 6308-2E-C3, 6309-2E-C3, 6311-C3, 6312-C3, 6313-C3, 6314-C3, 6317-C3, 6319-C3, 6322-C3
There are many other types of bearings used in electric motors. Common combinations include deep groove ball bearings and cylindrical roller bearings, and angular contact ball bearings and cylindrical roller bearings.
