1. The rotary evaporator motor has been subjected to excessive load for a long time, resulting in excessive temperature rise and damage to the insulation, thereby shortening the service life of the geared motor.

　　2. The principle of speed matching is that both the geared motor and the production machinery run at the rated speed, and the transmission mode is the same.

　　3. The rotary evaporator motor should keep all parts of the geared motor clean, ensure that the end caps and bearings are properly assembled, and do not perform brutal construction to prevent the corresponding parts from deforming and causing the geared motor to fail to run.

　　4. Bearing damage is a common fault in the operation of the geared motor.

　　5. The bearing cavity of the rotary evaporator motor is not cleaned or the grease added is not clean.

　　6. The operating temperature of the motor body of the rotary evaporator is too high, and the bearing fails to replenish the grease in time, causing the bearing to lack oil or even burn out.

　　7. The bearing itself has manufacturing quality problems, such as inflexible rotation, rust spots on the raceway, excessive clearance, poor maintenance, and deformation of the bracket.

　　8. When the bearing of the rotary evaporator motor is not in good condition, the vibration and noise of the geared motor will increase significantly.

　　9. The oil is deteriorated due to the long-term non-operation of the rotary evaporator, and the bearings are rusted and not repaired due to regular maintenance.

　　10. When the rotary evaporator motor vibrates, it should be distinguished from the deceleration motor itself or the poor transmission device, or it may be transmitted from the mechanical load end. First find the key to the problem, and then deal with it according to the specific situation.