A4VSO125 Pump Parts

A4VSO125 is a high-flow axial piston variable displacement pump, which belongs to the Rexroth A4V series. It is usually used in hydraulic systems that require large flows, such as large construction machinery, ships, etc. Compared with other models in the A4V series, the A4VSO125 is larger in size, has a higher flow rate, and a more complex structure.

A4VSO125 Pump Main Components

Cylinder Contains the piston and cylinder barrel, usually made of high-strength cast iron or alloy materials.

Swash plate Controls the angle of the piston, thereby adjusting the output of the pump.

Valve plate Guides the flow direction of the hydraulic oil in the pump, and the material is usually wear-resistant alloy steel.

Piston and shoe assembly Converts the rotational motion of the swash plate into the linear motion of the piston, the piston is made of wear-resistant alloy steel, and the shoe is made of wear-resistant rubber or polyurethane.

Bearing assembly Supports the rotating parts and reduces friction, usually using high-precision bearings.

Shaft Transmits power from the drive motor to the pump, and the material is high-strength alloy steel.

Seal kit prevents internal leakage and contamination, and the sealing material is usually fluororubber, nitrile rubber, etc.

Common parts of A4VSO125 pump

Piston and boot assembly due to the harsh working environment, it is easy to wear and is usually replaced as a set.

Seal kit includes various seals such as O-rings, shaft seals and piston seals. Replace regularly to prevent leakage.

Port plate controls the direction of fluid flow, and may wear and leak after long-term use.

Bearing assembly supports the rotating shaft and may be damaged due to contamination or overload, resulting in increased pump noise or poor operation.

Swash plate controls the output of the pump, and excessive wear or misalignment may cause unstable flow or leakage.

Common problems and solutions of A4VSO125 pump

Leakage caused by worn seals, damaged O-rings or excessive wear of the cylinder. Solution Replace damaged seals or parts.

Reduced flow may be caused by worn swash plate, clogged suction pipe or internal leakage. Solution Check and replace worn parts and check for blockage.

Excessive noise Usually caused by cavitation, worn bearings or misalignment. Solution Check for air in the system, replace worn bearings, ensure proper alignment.

Overheating Can be caused by insufficient cooling, excessive loads or contaminated hydraulic fluid. Solution Check cooling system, reduce loads, change hydraulic fluid if necessary.

A4VSO125 Pump Maintenance Recommendations

Regular hydraulic fluid analysis Monitor hydraulic fluid for contamination and degradation.

Replace filter elements Replace filter elements according to manufacturer's recommendations.

Check for wear Regularly inspect the pump for signs of wear such as scratches or pits.

Proper lubrication Ensure all moving parts are properly lubricated.

Avoid overloading Operate the pump within rated capacity.

Differences between the A4VSO125 and other A4V Series pumps

The main differences between the A4VSO125 and other models in the A4V Series are size, flow and pressure ratings. The A4VSO125 has a higher flow rate and is suitable for applications that require higher flow. In addition, due to the large flow rate, its internal structure may be more complex, and the requirements for manufacturing process and materials are also higher.

Summary

A4VSO125 is a high-performance hydraulic pump suitable for applications with high flow requirements. Due to its complex structure, maintenance is relatively complex and requires professional personnel to operate. Through regular maintenance and inspection, the service life of the pump can be extended and the reliability of the system can be improved.

If you need more detailed technical information or maintenance manuals, the specific model and manufacturer information of the pump can be provided.

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