Why do Komatsu PC40-8 hydraulic pump accessories make abnormal noisesoises

2025-02-26

Why do Komatsu PC40-8 hydraulic pump accessories make abnormal noises

The function of hydraulic cylinders is to convert hydraulic energy into mechanical energy. The input of the hydraulic cylinder for Komatsu PC40-8 hydraulic pump accessories is the flow rate and pressure of the fluid, and the output is the linear motion speed and force. The piston of the hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is limited.

Hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy for reciprocating linear motion. It is a component of Komatsu PC360-7 hydraulic pump. A hydraulic cylinder is basically composed of a cylinder barrel and cylinder head, a piston and piston rod, a sealing device, a buffering device, and an exhaust device. Buffer devices and exhaust devices depend on the specific application scenario, while other devices are essential. What is the reason for the abnormal sound of hydraulic cylinders during use? Below is a brief introduction for everyone.

1. Air intrusion into hydraulic systems is the main cause of noise generation.

2. The overflow valve is unstable, such as due to improper fit between the slide valve and the valve hole, or the contact between the cone valve and the valve seat being stuck by dirt, the damping hole being blocked, the spring being skewed or malfunctioning, causing the valve core to be stuck or unable to move smoothly in the valve hole, resulting in system pressure fluctuations and noise.

3. Improper adjustment of the directional valve caused the valve core to move too quickly, resulting in directional impact on the Komatsu PC200-2 hydraulic pump components and generating noise and vibration.

4. Mechanical vibration, such as the slender oil pipes of hydraulic cylinders and the many bends that are not fixed, can easily cause pipe shaking when oil flows through, especially when the flow rate is high; Unbalanced rotating parts of electric motors and hydraulic pumps, poor alignment during installation, or loose couplings can all generate vibration and noise.