Rexroth A4VSO125DFR30R-PPB13N00 R902404903 Open Circuit Axial Piston Pump 350bar Nominal Pressure

Rexroth A4VSO125DFR/30R-PPB13N00 R902404903 Axial Piston Variable Pump, Open Circuit Hydraulic Pump

Key Features

• Swashplate design, stepless variable displacement
• DFR control: combined pressure & flow control
• Nominal pressure: 350 bar, maximum peak pressure: 400 bar
• Excellent suction performance, low operating noise
• Fast control response, long service life
• Through-drive structure, can install additional pump to form tandem pump
• Modular construction, easy maintenance
• Drive shaft can bear radial and axial loads
• Optional mounting orientation, equipped with swashplate angle indicator

 
Technical Specifications
 
 

 
 
Applications

• Heavy industrial hydraulic station
• Metallurgical machinery
• Mining equipment
• Plastic injection molding machine
• Paper making machinery
• Large machine tool hydraulic system
• General open-loop hydraulic power unit

Specification
 

 
Competitive Advantages
 

1. Equipped with DFR pressure-flow combined control, the pump automatically adjusts flow and pressure according to system load. It reduces energy consumption and heat generation during idle operation, ideal for long continuous working cycles.

2. Built-in through-drive structure supports tandem pump assembly. Multiple pumps can be driven by one motor, simplifying hydraulic station layout and saving installation space and overall equipment cost.

3.Rated pressure 350bar, peak pressure up to 400bar. Optimized swashplate design delivers stable output and low noise. Modular construction ensures high interchangeability of spare parts for easy maintenance.

The Analysis for Rexroth A4VSO Axial Piston Pump Commom Breakdown:

1. Insufficient output pressure or unable to build pressure. Main causes: contaminated hydraulic oil leading to stuck control valve, worn piston assemblies or valve plate, internal leakage.

2. Loud noise and heavy vibration. Common reasons: insufficient suction supply, air leakage on suction line, air entrainment in oil, worn bearing or damaged piston.

3. Pump overheating and excessive internal leakage. Causes include deteriorated hydraulic oil, aging seals, worn cylinder block and piston pairs, continuous overload operation.