The Main Parts and Causes of Leakage of EPS Equipment Hydraulic System
Most of the pipe joint oil leakage occurs on the connection parts of the manifold block, valve
base plate, pipe element, etc. with the pipe joint. When the pipe joint is connected with the
metric thread, it will cause the seal of the combined gasket to leak tightly. The plugs cannot
be completely matched with each other and are prone to oil leakage. Once the above two
situations occur, it is difficult to cure, and can only be filled and sealed with the help of liquid
sealant or PTFE raw material tape.
If it collides with the mounting surface of the O-ring, scratches it, the mounting screws are
long, and the strength is not enough, oil leakage will occur. Deal with the above issues
separately when solving.
Dust, mud, salt spray, surface scratches, and eccentric load on the piston rod surface will
cause seal damage and oil leakage due to failure. The solution is to try not to subject the
hydraulic cylinder to eccentric load, and often wipe the dust on the piston rod, pay
attention to avoid bumps and scratches, and do a good job of hydraulic oil cleanliness
The temperature rise and heat cause serious leakage, which can reduce or deteriorate the
viscosity of the oil and increase the internal leakage. If the temperature continues to
increase, it will cause the sealing material to expand after heating and increase friction,
which will accelerate wear, axial rotation or sliding. Leakage quickly occurred. The O-ring
expands and deforms and causes thermal aging. After cooling, it cannot return to its original
state, loses elasticity and fails, and gradually leaks.