The Eaton Vickers PVB20-RS-20-CC-11 (Part Number 389117) is a heavy-duty, inline axial variable displacement piston pump engineered for open-circuit hydrostatic drives. Renowned throughout the industrial sector for its rugged simplicity, the PVB20 series provides dependable fluid power transmission by combining high working pressure limits with an exceptionally long operational lifespan.
This specific model features a right-hand (clockwise) rotation configuration, a standard series-20 design revision, and the advanced “C-C” pressure/flow control assembly. This control variant ensures that the pump dynamically adjusts its swashplate angle to accurately match the circuit’s volumetric demand, significantly reducing hydraulic fluid overheating, system wear, and energy consumption during idle or holding cycles.
Core Technical Features & Advantages
-
High Volumetric Efficiency: Precision-fit piston-and-barrel rotary groups ensure minimal internal cross-port leakage, maintaining high system pressure even under high-temperature continuous duty.
-
Robust Swashplate Assembly: Utilizes heavy-duty cradle bearings that smoothly respond to control signals, ensuring rapid and repeatable destoking or on-stroke performance.
-
Compact Footprint: Inline design alignment yields a space-saving physical layout, making it easy to install within crowded machine bays or compact hydraulic power units (HPUs).
-
Flexible Fluid Compatibility: Designed to run efficiently with standard petroleum/mineral-based industrial hydraulic oils, as well as synthetic fire-resistant fluids.
-
Simplified Maintenance: The modular architecture of the PVB series allows for straightforward field servicing, seal replacements, or cartridge overhauls, reducing total cost of ownership.
Primary Applications
The Vickers PVB20 piston pump is a standard workhorse found globally across a wide range of industrial and manufacturing machinery:
-
Industrial Hydraulic Power Units (HPUs) and centralized oil-grease stations
-
Metal cutting, forming, and shearing machine tools
-
Plastic processing, thermoforming, and injection molding machinery
-
Automation systems, textile machinery, and material handling lifts
-
Primary marine and deck machinery handling systems
Technical Specifications Table
| Parameter | Value / Specification |
| Brand Name | Eaton Vickers |
| Model Code | PVB20-RS-20-CC-11 |
| Part Number | 389117 |
| Pump Type | Inline Axial Variable Piston Pump |
| Circuit Type | Open Circuit |
| Rotation Direction | Clockwise / Right-Hand (R) |
| Control Type | C-C Pressure/Flow Compensator Control |
| Shaft Type | Straight Keyed Shaft (Standard) |
| Design Series | 20 / 11 |
| Sealing Material | High-Grade NBR (Buna-N) Standard / Optional Viton |