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What causes the abnormal sound of planetary reducer?

2022-10-22

When the planetary reducer is used daily, it is easy to have big or small problems if there is no regular maintenance and repair for a long time. The planetary reducer makes abnormal noise. What is the reason?

1. Listen to the bearing noise of the gear reducer motor.

Normal sound: continuous metal sound without fluctuation.

A slight "chirp" sound produced by rotating roller or ball bearings with the retainer, which contains an irregular metal sound independent of the rotational speed. If the sound decreases or disappears after adding lubricant, the sound has no effect on the operation.

The falling sound of the drum is generated when the gear motor rotates horizontally. It cannot be heard during normal operation, but can be heard at low speed, especially when it is about to stop. This "casing protector sound will not interfere with the operation.

Dust Noise - The sound produced when dust is embedded between the raceway surface and the roller or ball. After the occurrence of dust noise, remove the bearing parts, clean them, remove the dirt at the lubricating oil injection port and the dirt at the lubricating oil injection gun, and eliminate the cause of further blockage.

planetary reducer

2. Listen to the noise of the gear motor rotor.

The coupling or pulley bearing bush is loosely matched with the shaft; Coupling bolts are worn and deformed; The lubricating oil of gear coupling is insufficient, and the teeth are worn; The belt is loose and worn. These factors may cause the noise of the gear motor.

3. Listen to the electromagnetic noise of the gear motor.

Generally, there will be more or less electromagnetic noise inside the gear reducer motor, which will disappear when the power is cut off. Electromagnetic noise is mainly the sound of electromagnetic vibration resonance with the outside and stator core. The factors causing large electromagnetic noise include uneven air gap, loose iron core, unbalanced current and high-order harmonic current.

There are three reasons for planetary reducer noise:

First of all, the gears of the planetary reducer are seriously damaged, causing a lot of wear and vibration between the gears, generating a lot of noise during operation, affecting its normal working efficiency.

Secondly, there are some problems in the installation process of the planetary reducer, which leads to the unstable orientation of the reducer. The reducer swings due to the unstable orientation during operation, resulting in noise.

Third, improper use of planetary reducer. Mechanical equipment such as planetary reducer must be used by technicians. If it is not used properly, excessive load and high speed will produce noise. As time goes by, the service life of the gear reducer will be greatly shortened.


The above is an introduction to the cause of abnormal sound of planetary reducer. If you need planetary reducer, please consult the manufacturer of Newgear.

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