I. Product Overview
The A4VSO125DP/30R-PPB25N00 is a high-pressure axial piston pump from the Rexroth brand, belonging to the A4VSO series. Designed with a swashplate structure, this series of pumps is specifically tailored for open-circuit hydraulic drives. It boasts features such as high pressure, large flow rate, low noise, and long service life, making it widely applicable in industrial machinery, metallurgy, forging, shipbuilding, water conservancy, and hydropower sectors.
II. Product Features
1. Swashplate Structure: Utilizes a swashplate-type axial piston design, enabling stepless adjustment of displacement. The flow rate is proportional to the pump's rotational speed and displacement.
2. High-Pressure Performance: Rated operating pressure up to 350 bar, with some models supporting even higher pressures (e.g., 400 bar), meeting the demands of continuous heavy-duty operation.
3. Excellent Suction Characteristics: The pump body is optimized to ensure good oil suction performance even during high-speed operation, reducing cavitation phenomena.
4. Low Noise: Incorporates advanced noise reduction technology to effectively lower operating noise and improve the working environment.
5. Long Service Life: Key components are manufactured from high-quality materials and undergo precision machining and special treatment, ensuring long-term stable operation under harsh conditions.
6. M
odular Design: Supports various control methods (e.g., pressure, flow, and power control), allowing users to select and match options based on actual needs for easy integration with various hydraulic systems.
7. Short Response Time: The control system responds quickly, enabling rapid adaptation to system changes and enhancing system stability.
8. Through-Shaft Drive: Supports through-shaft drive, allowing combination with other pumps to form multi-pump systems and meet the needs of complex hydraulic systems.
9. Flexible Installation Positions: The pump body is designed flexibly, supporting multiple installation positions for convenient user installation based on actual space layouts.
10. Visual Swash Angle Indicator: Some models are equipped with a visual swash angle indicator, facilitating intuitive understanding of the pump's operating status.
III. Technical Specifications
• Model: A4VSO125DP/30R-PPB25N00
• Displacement: 125 cm³/rev
• Rated Pressure: 350 bar
• Maximum Pressure: 400 bar (some models)
• Speed Range: 1800 rpm (specific speed may vary depending on the model and operating conditions)
• Control Method: Pressure control (DP)
• Port Positions: On both sides
• Pump Weight: Approximately 87 kg (specific weight may vary depending on configuration)
• Rotation Direction: R (clockwise)
• Operating Temperature: -25°C to 90°C
IV. Application Areas
The A4VSO125DP/30R-PPB25N00 hydraulic axial piston pump is widely used in the following fields:
1. Iron and Steel Metallurgy: Hydraulic systems for blast furnaces, converters, continuous casting machines, etc.
2. Forging Presses: Provides stable and continuous power output for forging equipment.
3. Shipbuilding and Water Conservancy/Hydropower: Hydraulic systems for ship hoists, water conservancy and hydropower equipment, etc.
4. Ceramic and Refractory Hydraulic Presses: Supplies high-pressure and large-flow hydraulic power for ceramic and refractory hydraulic presses.
5. Vulcanizing Presses: Used in the hydraulic systems of rubber vulcanizing presses to ensure stable and consistent vulcanization processes.
6. Paper Making Equipment: Provides precise hydraulic control for paper making equipment to improve paper quality.
7. Petroleum and Petrochemical Machinery: Used in the hydraulic systems of petroleum and petrochemical equipment to meet operating demands under harsh conditions.
8. Construction and Traveling Machinery: Provides power support for excavators, loaders, and other construction and traveling machinery.
9. Railway Tunnel Shield Machinery: Used in the hydraulic systems of railway tunnel shield machines to ensure smooth shielding processes.
10. Mining Machinery: Supplies stable and reliable hydraulic power for mining equipment to improve mining efficiency.
V. Maintenance and Upkeep
1. Regularly Inspect Hydraulic Oil: Periodically check the cleanliness and oil level of the hydraulic oil, promptly replace contaminated oil, and replenish it to the specified level.
2. Monitor Pump Body Temperature: Avoid operating the pump at excessive temperatures to prevent damage to seals, bearings, and other components.
3. Regularly Replace Seals: Aging or damaged seals can cause leaks, affecting pump performance, so they should be replaced regularly.
4. Check Bearing Clearance: Excessive bearing clearance can affect the pump's internal clearances and the thickness of the hydrostatic support oil film, reducing bearing service life. Therefore, regularly check and replace bearings with excessive clearance.
5. Keep the Pump Body Clean: Regularly clean dust and oil stains from the pump body surface to prevent impurities from entering the pump body and affecting normal operation.
