Why does the hydraulic oil pump motor produce axial movement? Dalan Motor summarizes 5 reasons

During the operation of the hydraulic oil pump motor, the rotor part will have different degrees of displacement in the axial and radial directions, which is manifested by the noise and vibration of the motor. When the relative axial displacement is large, it will appear as axial Surging.

1. Reasons for axial movement

(1) The relative movement of the shaft and the rotor occurs.

(2) The axial adjustment spring pad is damaged or missing.

(3) Sway caused by self-alignment adjustment of the center line of the fixed magnetic force of the motor.

(4) The axial force generated when the fan rotates.

(5) Swing caused by loose fitting of the bearing housing of the end cover.

2. What are the effects of axial movement

The vibration of the motor shaft makes the joint part that should not have relative motion slip, the gap becomes larger, the motor has vibration and noise, and other abnormal conditions. At the same time, the originally stationary joint part slips → the vibration increases → the slippage increases → Vibration intensified → ... until the bearing breaks out of the "bore" and burns the winding. Even if it has not yet reached the level of winding damage, it will greatly reduce the service life of the motor.

3. Solutions

(1) Wave cushion can be added between the outer edge of the bearing and the end cover to adjust the buffer;

(2) Real-time monitoring and timely maintenance to eliminate the problem of motor shaft slippage before causing major accidents;

(3) The inner and outer bearing covers of the fixed-end bearings are stuck;

(4) Control the link that causes the motor to go through the shaft;

(5) Understand and master the actual working conditions of the motor in detail to avoid subjecting the motor to axial forces.

The above is the reason and solution for the axial movement of the hydraulic oil pump motor organized by Dalan Motors editors. I hope it will be helpful to friends in need.







----- Responsible Editor: Dalan Oil Pump Motor 02-Procurement Consultant

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