Rexroth A2VK12 Series Axial Variable Piston Pumps
A2VK12MAGR4G1PE1-SO2 | A2VK12MAOR4G1PE1-SO2 | A2VK12MAOR4G0PE2-SO2
Product Overview
Rexroth A2VK series axial piston variable metering pumps are high-performance hydraulic products designed for precision metering applications. These German-made pumps feature manual control with handwheel adjustment, offering reliable performance for industrial mixing systems, chemical metering, and hydraulic applications where accurate flow control is essential.
Product Model Comparison
| Parameter |
A2VK12MAGR4G1PE1-SO2 |
A2VK12MAOR4G1PE1-SO2 |
A2VK12MAOR4G0PE2-SO2 |
| Series |
A2VK |
A2VK |
A2VK |
| Theoretical Displacement |
12 mL/r |
12 mL/r |
12 mL/r |
| Rotation Direction |
Right-hand |
Right-hand |
Right-hand |
| Control Type |
Manual (handwheel) |
Manual (handwheel) |
Manual (handwheel) |
| Rated Pressure |
250 bar |
250 bar |
250 bar |
| Peak Pressure |
315 bar |
315 bar |
315 bar |
| Port Configuration |
G1PE1 |
G1PE1 |
G0PE2 |
| Seal Material |
NBR/FKM optional |
NBR/FKM optional |
NBR/FKM optional |
| Suitable Media |
Hydraulic oil, compatible fluids |
Hydraulic oil, compatible fluids |
Hydraulic oil, compatible fluids |
| Typical Speed |
735-1800 rpm |
735-1800 rpm |
735-1800 rpm |
Key Features
Precise Metering Performance
- Handwheel with scale for precise flow setting
- Consistent performance across flow range
- Optimized design for smooth, low-pulsation output
Reliable Construction
- Wear-resistant materials for long service life
- Multiple sealing points ensure leak-free operation
- Compact design for space-constrained installations
Flexible Integration
- Multiple port configurations for various system layouts
- SAE flange interface for easy installation
- Modular design simplifies maintenance
Technical Specifications
Basic Performance
- Working pressure: Rated 250 bar, peak 315 bar (short-term)
- Displacement range: 0 to maximum displacement continuously adjustable
- Volumetric efficiency: ≥95% (rated condition)
- Overall efficiency: ≥90% (rated condition)
- Allowable inlet pressure: 0.1-0.3 MPa for open circuit
Installation Requirements
- Mounting position: Any position, handwheel horizontal recommended
- Shaft alignment error: ≤0.1mm
- Inlet line: Minimum 10mm inner diameter recommended
- Drain line: Separate connection to tank, back pressure ≤0.2 MPa
Operating Conditions
- Hydraulic oil: ISO VG 46 or VG 68 recommended
- Filtration: 10-20μm at inlet
- Oil temperature: Normal 15-60°C, maximum 80°C
- First start: Pre-fill pump with oil before operation
Application Areas
- Chemical metering and batching systems
- Industrial mixing equipment
- Precision fluid transfer applications
- Industrial machinery hydraulic power units
- Multiple actuator control systems
- Polyurethane foaming equipment
- High-viscosity fluid metering
Frequently Asked Questions
What are the main differences between these three models?
All three models have the same displacement (12 mL/r) and rotation direction. The primary differences are in port configurations: G1PE1 (first two models) vs G0PE2 (third model). Port differences affect connection types and system integration options. Select based on your system's connection requirements and layout.
Why choose a 12 mL/r model over larger displacement pumps?
12 mL/r models are ideal for low-flow applications where precise metering is critical. They require smaller motors, have lower power consumption, and are more compact. Use for applications with flow rates below 20 L/min at typical speeds, or where space constraints exist.
What motor power is recommended for these pumps?
For 12 mL/r models at 250 bar, approximately 5-7 kW motor is typical. Actual power depends on operating pressure and flow rate. Calculate based on your specific parameters (pressure × flow rate ÷ 600 × efficiency) and add a 10-20% safety margin.
What maintenance is required for these pumps?
Regular maintenance includes checking oil level and quality, inspecting for leaks, monitoring pump noise and temperature. Check and replace filters regularly (every 500-1000 hours). Inspect coupling alignment periodically. For first 100 hours of operation, check for any unusual signs and consider oil change after initial run-in period.
Can these pumps be used with water-based fluids?
Standard models are designed for mineral-based hydraulic oils. For water-based fluids (HFA, HFB, HFC), special materials and seals may be required. Consult with technical support before using with non-standard media, as compatibility depends on specific fluid properties and operating conditions.
After-sales Service & Technical Support
- Warranty period: 12 months from date of shipment
- Technical support: Application consultation and troubleshooting
- Spare parts: Available through authorized distributors
- Repair service: Authorized service network
Ordering Information
For ordering or technical specifications, contact your local Rexroth authorized distributor or sales representative. Provide complete model number, quantity, and delivery requirements.
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