What Cause  Hydraulic Press High Temperature?

1. Oil tank volume is too small, heat dissipation area is not enough; Or not installed oil temperature device, or although there is a cooling device, but the cooling capacity is too small.

2. Fast speed need choose quantitative pump oil supply system at work, will have most of the flow at high pressure, to the cause of fever through the relief valve discharge back.

3. The unloading circuit fails, or without circuit. the oil pump can't normal unloading charge when stop working, all the flow is under the high pressure pump overflow and cause fever  rise too high.

4. the system pipeline is too thin, too long, and too much bending, local pressure loss and the frictional pressure loss is too big.

5. components precision is not enough, and equipment quality is very poor, in relative motion the mechanical friction loss is bigger.

6. The mating parts fit clearance is too small, or the clearance is too big for wearing and tearing, internal and external leakage quantity is very large, cause the pump  efficiency too low and the temperature raise quickly.

7. the hydraulic system working pressure adjustment is much higher than the actual need, sometimes for the seal too  tight, or seal is damaged make more  leakage and  have to raise the pressure to work result in high temperature.