Symptoms of clogged Hydraulic Oil Filters

Oct 13, 2021

The main reason for the clogging of the hydraulic oil filter is the problem of the filter itself and the problem of the hydraulic oil. The following symptoms will appear after the clogging occurs

1. If the oil suction filter element is used, it will cause insufficient oil suction of the pump, increase the noise, cause heat generation, and then induce burnout.

2. If it is a high-pressure loop oil filter element, there will usually be an alarm and a bypass valve, otherwise the blockage will cause the downstream components to operate slowly, or the oil cylinder will not operate.

3. If it is an oil return filter element, the return oil will be blocked and the back pressure will increase. The cylinder works slowly.

Nowadays, filters are generally equipped with pressure protection check valves. When the hydraulic oil filter element of the filter is blocked and reaches the pneumatic pressure of the check valve, the pressure oil passes through the check valve and directly shields the filter. Protect the hydraulic pump. The advantage of this is that it does not affect the normal operation of the system, but the hazard is also very clear. Since the filter element is blocked, it means that the oil is very dirty. If the hydraulic oil bypasses the downstream system without passing through the filter element, it is likely to be, This causes the downstream spool to jam and contaminates downstream hydraulic components.

Therefore, do not underestimate the hydraulic oil filter. Although it is cheap, it is very powerful. You must regularly check the use of each hydraulic filter element on your equipment. If the filter element is blocked, the equipment will not be sufficiently lubricated and the machine will be damaged. Not worth the loss