1. When the machine is working, the rated working pressure is exceeded, and the machine load is serious and heat is generated.400 ton hydraulic pressOverload operation is also one of the incentives for this situation, especially in the hot summer, the working environment is very hot, if the hydraulic machine heat dissipation is not good, the internal heat of the hydraulic machine will be more and more, resulting in more and more serious consequences.
2, poor quality hydraulic oil medium may become thin, so that impurities are suspended, or have affinity with water, which will also cause heat. 400t hydraulic machine in the choice of oil, if the use of low quality oil, long-term use may cause dilution, and impurities in it may also float out, or it may be closer to water, resulting in more and more heat.

3. Check for leakage. There may be oil in the place of leakage, because the oil will absorb the dirt. In addition, overheating often implies leakage, and the joints found to have leakage should be tightened at any time. Listen for abnormal noise, hydraulic pump has; Click; Sound suggests that air may enter the air and produce cavitation, or has been worn by dirt.
4. Improper adjustment of the oil return valve, or failure to replace damaged hydraulic parts in time, sometimes heat will be generated. If there is a problem with the oil return valve of the 400 ton hydraulic press and it is not properly adjusted, the parts of the hydraulic press are not replaced as soon as possible, and heat accumulation will occur.