What Do Bushings Do On A Motor ?
Mar 11, 2026| Support the rotor to ensure coaxiality
The core function of bearings is to fix the position of the motor rotor, keeping the rotor and stator in a precise coaxial state at all times. This stable coaxial performance avoids friction between the rotor and the inner wall of the stator, ensuring the basic stability of the motor operation.
Reduce operating friction and improve transmission efficiency
When the motor rotor rotates at high speed, the bearings replace the sliding friction between the shaft and the end cover through rolling friction, greatly reducing the frictional resistance during operation, reducing energy loss, and enabling more efficient conversion of electrical energy into mechanical energy.
Buffer vibration and impact, protect the overall structure
When the motor starts, stops or changes load, it will generate certain vibrations and impact forces. The bearing can absorb and disperse these external forces through its elastic structure and rolling characteristics, avoiding direct transmission of vibrations to other components of the motor and extending the overall service life of the motor.
Guide the rotor operation trajectory to ensure accuracy
The bearings strictly limit the radial and axial displacement of the rotor, ensuring that the rotor always runs smoothly according to the preset trajectory, ensuring that the motor output speed and torque remain stable, and meeting the requirements of various equipment for power output accuracy.
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