1 Air intrusion into the hydraulic system is the main cause of noise
2 The relief valve is unstable, such as the valve is stuck or moved in the valve hole due to improper cooperation of the spool valve and the valve hole or the dirt at the contact between the cone valve and the valve seat is stuck, the orifice is blocked, the spring is skewed or the valve is broken. Not working, causing system pressure fluctuations and noise.
3 The misalignment valve is improperly adjusted, causing the reversing valve spool to move too fast, causing a commutation shock, thus generating noise and vibration.
4 Mechanical vibration, such as slender tubing, many elbows without fixing, when the oil flow, especially when the flow rate is high, it is easy to cause the tube to shake; the rotating part of the motor and hydraulic pump is unbalanced, or during installation In the middle, or the coupling is loose, vibration and noise can be generated.
Concerned about surprises
Tag: Directional valve Valve hole Hydraulic cylinder Spool Spool valve
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