A10VSO 28 DFR1/31R-VPA12N00 280bar High Pressure Variable Piston Pump for Hydraulic Power Unit & Machine Tool

Key Features

1. DFR1 pressure-flow control, energy saving & low heat generation

2. Low noise, stable running for 24h continuous industrial work

3. High power density, compact dimension

4. Good suction characteristic

5. ISO standard installation, easy replacement

6. Strict performance test before packing

7. Original / high quality replacement available

8. Built-in power limiting overload protection

9. Dual drain ports, excellent suction performance, anti-cavitation

10. Low operation noise, fast control response

11. High volumetric efficiency, stable long-term operation

12. Compact cast iron housing, easy installation & maintenance

Technical Parameters

Specifications:

Application Scenarios

· Hydraulic power unit / Hydraulic station

· CNC machine tools & metal cutting equipment

· Automation & packaging machinery

· Light construction auxiliary hydraulic system

· Hydraulic test bench

· General stationary heavy-duty open-loop hydraulic drive

Competitive Advantage:

1. This Rexroth A10VSO28DFR1/31R-VPA12N00 adopts DFR pressure-flow compound control. It can adjust pressure and flow synchronously with fast response to load changes. It delivers high control precision and smooth operation for equipment with frequent movements such as mobile cranes.
2. It adopts the mature modular structure of 31 series with high volumetric efficiency. Precisely matched internal friction pairs bring good anti-pollution performance. It works reliably under dusty construction sites and fluctuating temperatures, resisting overheating during long continuous operation and reducing downtime.
3. Compact size with standard mounting interface, it fits mobile cranes, concrete machinery, shredders and many other machines. Thanks to large market stock, spare parts are easy to source and maintain. It is the preferred hydraulic power unit for repair and retrofit of small and medium construction machinery.

The Analysis For Rexroth A10VSO Axial Piston Pump Common Breakdown:

1. Insufficient pump flow causes slow and weak machine movement. It is mostly caused by worn piston slippers and valve plate, or blocked suction filter and excessive suction vacuum. It will directly slow down crane lifting and luffing actions and reduce working efficiency.
2. Abnormal noise and vibration appear during pump operation. Common triggers are contaminated hydraulic oil, air entering the suction line or worn bearings. Continuous vibration and noise will scratch internal precision parts rapidly, and the pump may lock up and damage the hydraulic system in serious cases.
3. Severe system pressure fluctuation and poor pressure holding performance. It is mainly caused by worn and stuck DFR control spool or internal leakage from aging seals. Stable pressure cannot be maintained, which may lead to pressure drop under crane load and bring potential safety risks.