Hydraulic machine repair troubleshooting

Hydraulic machine repair troubleshooting

Shortcomings of hydraulic press

1.The oil is affected by temperature. Viscosity changes with temperature, so it is not suitable to work at high or low temperatures.

2.Is not suitable for long-distance transmission of power. Because the oil pipe is used to transport pressure oil, the pressure loss is large, so it is not suitable to transport power from a long distance.

3.The air mixed in the oil is easy to affect the working performance. After the oil is mixed into the air, it is easy to cause creep, vibration and noise, which affects the working performance of the system.

Oil pump heating failure

1.The volumetric efficiency of the oil pump is reduced.

2.The pump burns due to abnormal wear.

3.Oil temperature rises sharply.

4.Filter blockage increases oil absorption.

5.Mixed air intake.

6.Coupling center correction is poor.

7.Working oil deterioration or moisture mixing.

Vane pump guide failure

1.The oil level is lower than the suction inlet of the pump.

2.Oil filter network blockage.

3.The bearing of the pump is damaged.

4.Hydraulic oil viscosity is too high.

5.Coupling correction is poor.

6.The oil suction flange of the pump or the oil suction filter flange is not well sealed.

Total pressure cover maintenance.

enerally, one of the three throttle plugs of the cover oil will not work, which will cause the oil pump to be pneumatically difficult. The throttle is usually installed at the bottom of the cover.

Machine tool heating

1.With cooler cooling.

2.The water temperature of the cooling water is too high.

3.The return oil does not completely pass through the cooler.

4.The cooling pump is not working properly.

5.The cooler is inefficient.

When the chiller effluent turns red, the cooler is embroidered and cleaned with a wire brush.

Electromagnetic coil heating

1.Electrical wiring error: voltage. Frequency confirmation.

2.The voltage changes, the voltage is low, the attraction is reduced, and the reaction force is overcome, so that the movable iron core is not completely sealed and generates heat.

3.There is dust on the spool, making the movement inflexible.

4.The flow rate is too large, so that the fluid reaction force increases.

5.The coil itself is degraded, making the attraction insufficient.