Troubleshooting of Gear Motor

Created on 2025.05.17

Troubleshooting of Gear Motor

The common faults of the motor in use are non rotation, abnormal speed and torque, excessive noise, internal and external leakage and abnormal heating, etc. the general methods of fault diagnosis and troubleshooting are shown in the following table. The following table lists some common fault phenomena and troubleshooting methods of cycloid internal meshing gear motor in use.

Common faults and troubleshooting of cycloid internal gear motor in use

Fault phenomenon	Cause Analysis	Exclusion method
1. The motor does not turn	① The hydraulic pump has not started or is not turning in the correct direction.	① Start the hydraulic pump or correct the pump's rotation direction
	②Insufficient fuel tank capacity	Add to the specified oil amount
	③ The directional valve is in the neutral position	③ Switch directional valve
	④The pressure setting value of the overflow valve is too low	④ Adjust the system pressure to the specified value
	⑤ Insufficient motor output torque	⑤Replace motor
2. The noise is too loud during operation	①There is air in the hydraulic system	①Identify the intake cause and eliminate air in the oil
	②Vacuum	Increase fuel supply
	③Failure of internal components such as bearings in the motor	③Replace bearings and other damaged parts
3. Excessive internal and external leakage	①Damage to the sealing component causes internal and external leakage	①Replace sealing components
	②The motor parts have air holes, sand holes, cracks, etc.	②Replace parts
	③Loose bolts	③Tighten the bolts
4. Abnormal fever	①Hydraulic oil temperature is too high	Increase cooling capacity
	②Motor efficiency decreases	②Replace consumable parts
	③Abnormal wear	③Replace motor

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