What Are The Reasons That Affect The Life Of The Hydraulic Pump?

1. Bearing wear

Bearing wear is the decisive factor affecting the soft life of hydraulic pumps. Bearings for hydraulic pumps are special bearings for specific operating conditions and specific load friction moments. This kind of bearing will have “eccentric load edge effect” during operation, which will inevitably reduce the rated service life of the bearing, and will also affect the soft life of the hydraulic pump.

2. Oil pollution

The oil pollution of plunger pump oil is mainly caused by man-made pollution. When replacing the hydraulic filter element, replace the filter element without draining the oil in the filter cartridge or at all without draining the oil in the filter cartridge, causing the pollutants in the filter cartridge to flow directly into the fuel tank from the outlet of the filter cartridge. When particles enter the hydraulic pump, a scratch on the distribution surface will be formed. When the scratch is washed by high-pressure oil for a long time, it will evolve into a groove, which will cause the hydraulic pump to fail.

3. Inhale oil with air

Inhalation of oil with air is the biggest factor affecting its soft life. When the air enters the distribution area of the hydraulic pump and changes from the low-pressure area to the high-pressure area, under the extrusion of the high-pressure oil, the bubbles burst and rupture, and cavitation will be formed between the distribution surface of the cylinder and the distribution plate. When the cavitation is serious, the distance area of the copper layer on the surface of the cylinder will be channeled. Another situation is that the volume of the hydraulic oil tank is small or the design of the distance plate in the oil tank is unreasonable. When the hydraulic system returns oil, the air bubbles brought into the oil are sucked away by the pump suction port before they are completely eliminated. Also can form above-mentioned cause of disease.

4. Resonance during multi-pump operation

When the pump group of a large hydraulic station group is working, resonance will occur, which will also affect the life of the imported hydraulic pump.

5. Improper repair method

Any improper repair method will cause complete damage to the hydraulic pump. The disassembly and installation of the plunger pump is a precise and complicated operation. Before repairing the plunger pump, the operator must carefully read the repair technical parameters of the plunger pump under repair. The best way is to repair it by professionals.