What are the causes of hydraulic cylinder heat?

What are the causes of hydraulic cylinder heat?

1, the hydraulic cylinder tank volume is too small, the heat dissipation area is not enough, not installed oil cooling device, or although there is a cooling device but its capacity is too small.

2, according to the fast-forward speed selection of oil pump capacity of the quantitative pump oil supply system, in the work will have most of the excess flow at high pressure from the relief valve overflow back and heat.

3, the hydraulic cylinder system unloading circuit failure or because not set up unloading circuit, stop working when the pump can not unload, the pump's entire flow in the high-pressure overflow, resulting in overflow loss and heat, resulting in temperature rise.

4、System piping is too thin and too long, too much bending, local pressure loss and large pressure loss along the way.

5、Insufficient precision of components and assembly quality is poor, the mechanical friction between the relative movement of the loss is large.

6, the fit gap of the matching parts is too small, or the use of wear and tear resulting in excessive gap, internal and external leakage, resulting in large volume loss, such as the pump's volumetric efficiency is reduced, the temperature rises quickly.

7, the system operating pressure is adjusted much higher than the actual need. Sometimes because the seal is too tight, or because of seal damage, leakage increases and have to adjust the pressure to work.

8, the hydraulic cylinder operating temperature is high, resulting in high oil temperature.

9, choose the viscosity of the fluid is not appropriate, viscosity viscous resistance, viscosity is too small, the leakage increases, both cases can cause heating temperature rise.