Rexroth A2VK Series Metering Pumps
The Rexroth A2VK series axial piston variable metering pumps are high-performance hydraulic products designed for precision metering applications. This release includes three models: A2VK28MAGR1G1PE2-SO2 (28 mL/r), A2VK28MAGR1G1PE1-SO2 (28 mL/r), and A2VK12MARL4G0PE2-SO2 (12 mL/r). These 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 |
A2VK28MAGR1G1PE2-SO2 |
A2VK28MAGR1G1PE1-SO2 |
A2VK12MARL4G0PE2-SO2 |
| Series |
A2VK |
A2VK |
A2VK |
| Theoretical Displacement |
28 mL/r |
28 mL/r |
12 mL/r |
| Rotation Direction |
Right-hand |
Right-hand |
Left-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 |
G1PE2 |
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
- Accurate flow control: Handwheel with scale for precise flow setting
- Repeatable operation: Consistent performance across flow range
- Low pulsation: Optimized design for smooth output
Reliable Construction
- Durable components: Wear-resistant materials for long service life
- Robust sealing: Multiple sealing points ensure leak-free operation
- Compact design: Suitable for space-constrained installations
Flexible Integration
- Multiple port options: Different port configurations for various system layouts
- Standard mounting: SAE flange interface for easy installation
- Service-friendly: Modular design simplifies maintenance
Wide Application Range
- Multiple displacement options: 12 mL/r and 28 mL/r models available
- Media compatibility: Suitable for hydraulic oils and compatible fluids
- Pressure capability: Rated for 250 bar continuous operation
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
- Coupling alignment: 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
Industrial Processing
- Chemical metering and batching systems
- Mixing equipment for various industries
- Precision fluid transfer applications
Hydraulic Systems
- Industrial machinery hydraulic power units
- Multiple actuator control systems
- Medium-flow hydraulic applications
Special Applications
- Polyurethane foaming equipment
- High-viscosity fluid metering
- Systems requiring precise flow control
Frequently Asked Questions
What are the main differences between these three models?
Answer: The primary differences are displacement (28 mL/r vs 12 mL/r), rotation direction (right-hand vs left-hand), and port configurations (G1PE2, G1PE1, G0PE2). The 28 mL/r models deliver higher flow capacity than the 12 mL/r model. Rotation direction must match the drive motor. Port differences affect connection types and system integration options.
How do I choose the correct rotation direction?
Answer: Pump rotation direction must match the drive motor's rotation. When viewed from the drive end, clockwise motor rotation requires right-hand pump, counterclockwise requires left-hand pump. The A2VK12MARL4G0PE2-SO2 is left-hand rotation, while the other two are right-hand. Confirm motor rotation before selection.
What motor power is recommended for these pumps?
Answer: For 12 mL/r model at 250 bar, approximately 5-7 kW motor is typical. For 28 mL/r models, 10-15 kW is recommended. Actual power depends on operating pressure and flow rate. Calculate based on your specific parameters and add a safety margin.
What maintenance is required for these pumps?
Answer: Regular maintenance includes checking oil level and quality, inspecting for leaks, monitoring pump noise and temperature. Check and replace filters regularly. 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?
Answer: 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.
Product information based on manufacturer data. Specifications subject to change. Confirm product suitability for your application before use. Release Date: January 2026 Publisher: Rexroth
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