What are the reasons for the decrease of the pressure of the 315 tons single arm hydraulic press?

1. 315 tons of single-arm hydraulic pressure regulator valve spring becomes loose, such as no change after the pressure may be due to long-term use of the valve due to wear leakage caused by lifting pressure;

2. single arm hydraulic hydraulic pump for a long time wear leakage;

3. the cylinder piston head seal wear or aging lead to the string of oil and can not lift the pressure;

4. single arm hydraulic valve solenoid valve use time is too long, the valve core wear, leakage lead to pressure is not;

5. the hot oil temperature is too high, the hydraulic oil is too thin to raise the high pressure;

6. 315 tons of single-arm hydraulic pressure holding valve leakage;

7. Leakage of hydraulic pipeline, oil cylinder welding point and piston rod seal;

8. The oil level of the oil tank of the single-arm hydraulic press is insufficient, and the oil filter is vacuumed.

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