1. Piping technology:

The piping technology determines that the working pressure of the system and the arrangement of components must follow certain rules, and the damage to the piping components will lead to the loss of system function and bring other dangers.

2. Intrusion of pollutants and dust; system pollution will lead to unstable system operation and sharp decline in component life.

3. Trouble diagnosis is difficult.

4. The temperature change of hydraulic oil.

Changes in oil viscosity caused by changes in oil temperature will reduce the efficiency of the system and increase the aging of system components

5. Oil leakage

In short, in the transmission of machinery and devices, hydraulics, pneumatics and electrics should be comprehensively used so that they can play their due roles more fully.