What causes hydraulic shudder?

What causes hydraulic shudder?

Abnormal noise in hydraulic systems is often caused by aeration or cavitation. Aeration occurs when air contaminates the hydraulic fluid. Air in the hydraulic fluid makes an alarming banging or knocking noise when it compresses and decompresses, as it circulates through the system.

What would cause hydraulic pump cavitation?

High vacuum creates vapor bubbles within the oil, which are carried to the discharge (pressure) side. These bubbles then collapse, thus cavitation. This type of hydraulic pump failure is caused by poor plumbing, flow restrictions, or high oil viscosity; however, the leading cause of cavitation is poor plumbing.

What does pump cavitation sound like?

Rather than an occasional rattle, which might be caused by mineral deposits or eroded material from inside a pump system, cavitation sounds like popping bubbles or even rocks passing through the system. This can also be accompanied with a cracking noise and perhaps even a continual rumble.

What causes a hydraulic pump to vibrate?

Pumps create fluid pulses as they operate, and these pulses can cause hydraulic lines to vibrate, increasing friction damage to hoses and causing wear and tear on connections. An improperly or insecurely mounted pump can also cause vibrations which travel throughout the structure of your hydraulic equipment.

Can a vibration in a hydraulic system be dangerous?

If nothing else, you’ll be dealing with increased, irritating, and potentially dangerous noise levels. Fortunately, there are ways to detect and correct the causes of excessive vibration to keep your hydraulic equipment in top working condition.

What causes a knocking noise when hydraulic fluid is compressed?

This causes the absolute pressure in that part of the circuit to fall below the vapor pressure of the hydraulic fluid. This results in the formation of vapor cavities within the fluid, which implode when compressed, causing a characteristic knocking noise.

What can I do to reduce vibration in my hydraulic system?

No matter where the shock waves are coming from, installing an accumulator will help dampen them and reduce vibration. It’s important to remember that hydraulic equipment can suffer from both fluid-borne and structure-borne vibrations.