Product Overview
The Eaton Vickers 25V21A 1A22R is a fixed displacement, intra-vane design hydraulic pump from the renowned Vickers V-Series (25V) family. Engineered for industrial duty, this pump utilizes a balanced vane rotor assembly that hydraulically balances radial forces, resulting in exceptionally low bearing loads and extended service life. The 25V21A designation indicates a nominal displacement of 21 US gallons per minute at 1200 RPM, making it a mid-range workhorse suitable for a wide array of continuous-duty hydraulic systems. The 1A22R suffix defines the specific mounting flange, shaft type, port orientation, and rotation direction, ensuring exact drop-in compatibility with OEM installations. This pump is a direct replacement for legacy Vickers 25V series units and is widely deployed in plastic injection molding machines, machine tools, and industrial presses where reliable, quiet, and efficient fluid power is critical.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Vane Pump (Fixed Displacement) |
| Model Designation | 25V21A 1A22R |
| Series | Vickers 25V Series (Intra-Vane Design) |
| Nominal Displacement | 21 US gpm @ 1200 RPM (approx. 66.2 cm³/rev) |
| Operating Pressure | Continuous: up to 175 bar (2500 psi); Intermittent: up to 210 bar (3000 psi) |
| Speed Range | 600 – 1800 RPM (continuous) |
| Mounting & Connection | SAE 4-Bolt Flange (1A); Keyed Shaft; Side Ports (22); Right-Hand Rotation (R) |
| Fluid Compatibility | Mineral-based hydraulic oil, ISO VG 32-68; Phosphate ester and water-glycol available with optional seals |
| Filtration Requirement | ISO 4406 18/16/13 or better (10 µm absolute recommended) |
Engineering Features & Advantages
- Precision Performance: The intra-vane cartridge design maintains constant vane tip contact with the cam ring, ensuring high volumetric efficiency and stable flow output even as system pressure fluctuates. This results in consistent actuator speed and repeatable cycle times.
- Balanced Rotor Design: Hydraulic pressure is applied to opposing cam ring pockets, canceling radial loads on the shaft and bearings. This dramatically reduces wear, vibration, and noise, extending pump life in continuous industrial operation.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Eaton standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
This pump is a direct replacement for legacy Vickers 25V series units and is widely deployed in plastic injection molding machines, machine tools, and industrial presses where reliable, quiet, and efficient fluid power is critical.
PRODUCT IMAGES
Eaton Vickers 25V21A 1A22R Fixed Displacement Vane Pump
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Shop the genuine Eaton Vickers 25V21A 1A22R Variable Displacement Vane Pump. This US-made hydraulic component features a pressure-compensated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.