A4VSO355 Pump

A4VSO355 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, metallurgical equipment, etc. Compared with other models in the A4V series, A4VSO355 is larger in size, has a higher flow rate, and a more complex structure, which can provide higher pressure and flow.

Main components of A4VSO355 pump

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

Swash plate Controls the angle of the piston and thus adjusts the output of the pump.

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

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 boot is made of wear-resistant rubber or polyurethane to ensure sealing.

Bearing assembly supports rotating parts and reduces friction, usually with high-precision bearings to improve pump efficiency and life.

Shaft transmits power from the drive motor to the pump, made of high-strength alloy steel to withstand torque.

Seal kit prevents internal leakage and contamination, and the sealing material is usually fluororubber, nitrile rubber, etc. to ensure the cleanliness of the system.

Common parts of A4VSO355 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, which may be damaged by 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 A4VSO355 pump

Leakage caused by seal wear, O-ring damage or excessive wear of the cylinder. Solution Replace damaged seals or components.

Reduced flow May be caused by worn swashplate, clogged suction line, or internal leaks. Solution Inspect and replace worn parts, check for blockages.

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

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

A4VSO355 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 Make sure all moving parts are properly lubricated.

Avoid overloading Operate the pump within rated capacity.

Differences between A4VSO355 and other A4V series pumps

The main differences between A4VSO355 and other models in the A4V series are size, flow rate and rated pressure. A4VSO355 has a larger flow rate and is suitable for applications that require larger flow rates. In addition, due to the larger flow rate, its internal structure may be more complex, and the requirements for manufacturing processes and materials are also higher.

Summary

A4VSO355 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 operation. Regular maintenance and inspection can extend the service life of the pump and improve the reliability of the system.

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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A4VSO355 pump selection guide

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It should be noted that

The specific parameters of the A4VSO355 pump (such as flow range, pressure range, speed range, etc.) vary depending on the manufacturer and model. Please refer to the actual product parameters.

It is recommended that the maintenance of the A4VSO355 pump be carried out by professional hydraulic maintenance personnel to avoid greater damage caused by improper operation.

If you want to know more detailed information, it is recommended that you provide the following information

The specific model of the pump (including manufacturer, series, model, etc.)

The operating environment of the pump (such as temperature, pressure, medium, etc.)

The specific problems encountered (such as leakage, noise, insufficient flow, etc.)

This way I can provide you with more accurate and targeted answers.

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