A4VSO125DFR30R-VPB13N00 Rexroth High Pressure Variable Displacement Pump

A4VSO125DFR30R-VPB13N00 125cc Rexroth DFR Open Circuit Hydraulic Pump

Key Features

• Swash plate design, infinitely variable displacement
• DFR combined pressure & flow control
• Rated pressure: 350 bar, peak pressure: 400 bar
• Through drive for multi-pump combination
• Excellent suction characteristics, low noise
• Modular design for easy maintenance
• Visual swivel angle indicator for convenient on-site adjustment

Technical Specifications

Applications

1. Hydraulic power unit, metallurgical machinery
2. forging machine, shearing machine, mining equipment
3. marine hydraulic system, heavy construction machinery
4. paper machinery, rubber & plastic machinery and other heavy-duty industrial hydraulic systems

Specification:

Competitive Advantages:

1. DFR combined pressure & flow control, limits maximum flow while maintaining constant pressure, reduces power loss and heat generation for hydraulic system.

2. Through-drive structure supports multi-pump series connection, flexible system integration, saves installation space and cuts total system cost.

3. FKM Viton seals with 350bar rated pressure, stable performance under heavy continuous load, compatible with mineral oil and most synthetic hydraulic fluids.

The Analysis for Rexroth A4VSO Axial Piston Pump Commom Breakdown:

1. Insufficient flow and low system pressure. Reason: Hydraulic oil contamination, piston slipper wear, stuck DFR control spool, insufficient oil suction.

2. Excessive noise and vibration during operation. Reason: Cavitation from poor suction, air entering hydraulic oil, bearing damage, misalignment of coupling.

3. External oil leakage of pump. Reason: Damaged FKM seals, incorrect installation, excessive oil temperature, system overpressure impact.