Publish Time: 2023-06-09 Origin: Site
The bearings used in the motor are divided into rolling bearings and sliding bearings, sliding bearings have low noise, relatively low noise in the motor, simple structure, widely used in micro motors, and in other types of motors, especially in small and medium-sized asynchronous motors, because rolling bearings have easy use and maintenance, high running accuracy, good starting performance. Can make the motor axial structure compact and low cost many advantages, use more. Under normal circumstances, after the bearing is loaded into the motor, the bearing noise of the motor has a close relationship with the noise of a single bearing, after the low-noise bushing is loaded into the motor, the motor noise is also small, but there are also many cases after the low-noise bushing is loaded into the motor, the motor noise is not small, what may be the reason for this situation?
(1) The motor inner bearing clearance is large.
(2) Motor rotor sweep: it is also a rotating part in the motor. The motor is composed of rotor and stator, which is used to realize the conversion device between electric energy and mechanical energy and mechanical energy and electric energy.
(3) The magnetic steel loosens and falls off.
(4) Internal axial movement of the motor.
(5) Brush motor commutator surface oxidation, ablation, oil, uneven, commutator loose.
(6) The carbon brush frame is loose and the carbon brush frame is not correct.
(7) motor speed and natural frequency of support parts;
(8) Structural type of bearing support parts;
(9) Load and operating temperature.
Vibration is the source of noise, bearing noise and vibration are inseparable, in order to ensure low vibration and low noise bearing work, must be from the bearing quality and motor bearing structure design, bearing support processing technology, bearing maintenance and other aspects of a comprehensive consideration. Adopt reasonable design structure, advanced processing technology, correct use and maintenance to reduce bearing noise and extend bearing life.