Vickers Eaton F3-PVB5-RSY-31C Axial Piston Pump Hydraulic Variable Displacement Pump for Industrial Machinery

Product Overview:
The F3-PVB5-RSY-31C-20-11 is a high-performance variable displacement axial piston pump from the renowned Vickers (now part of Danfoss) PVB series. Specifically engineered for open circuit industrial and mobile hydraulic systems, this pump delivers exceptional reliability, efficient operation, and precise control under demanding conditions . With a robust construction and advanced RSY pressure compensator control, it provides stepless flow adjustment matched exactly to system pressure and flow requirements, minimizing energy consumption and heat generation. The "F3" designation indicates special seals for fire-resistant fluids, making it suitable for specialized industrial applications . This unit is a direct, high-quality replacement solution for original Vickers equipment.

Technical Specifications:

• Model: F3-PVB5-RSY-31C-20-11 (and similar variants: PVB5-RSY-31-C-20-11, PVB5-RSY-31-CM-20-11)

• Type: Swashplate design, variable axial piston pump

• Series: PVB5 / 31 Series

• Displacement: 31.5 cm³/rev (typical for PVB5 frame size)

• Nominal Pressure: 210 bar (3000 psi) continuous operation

• Maximum Pressure: 250 bar (3600 psi) peak

• Maximum Speed: 1800 rpm (at full displacement)

• Flow Rate: Up to 56 L/min at 1800 rpm

• Control Type: RSY - Pressure compensator control with remote pilot capability

• Design: For open circuit hydraulic systems

• Mounting Flange: SAE A 2-Bolt / ISO 3019-1 standard

• Port Connection: SAE thread ports

• Shaft Type: Straight keyed shaft (standard)

• Material: High-strength cast iron construction

• Seal Material: F3 - Special seals for fire-resistant fluids (phosphate esters, water glycols)

• Temperature Range: -20°C to +80°C (depending on fluid type)

• Filtration Requirement: Return line filtration <10μm, suction strainer 100μm (150 mesh)

Core Features:

• Robust Swashplate Design: The proven swashplate design with high-strength cast iron construction ensures reliable operation, excellent volumetric and mechanical efficiency, and long service life in demanding industrial applications .

• RSY Pressure Compensator Control: Advanced pressure compensator automatically adjusts pump displacement to maintain set system pressure, delivering only the flow required by the system. The "Y" designation indicates remote pilot capability, allowing pressure adjustment from a remote location .

• F3 Special Seals: Designed with specialized seal materials compatible with fire-resistant hydraulic fluids (such as phosphate esters and water glycols), making it ideal for applications with stringent fire safety requirements like steel mills, die casting, and mining .

• Stepless Variable Displacement: Output flow is infinitely variable between zero and maximum, automatically matching flow to demand without generating excess heat or wasting energy .

• High-Pressure Capability: Delivers up to 250 bar peak pressure, meeting demanding industrial application requirements .

• Excellent Suction Characteristics: Optimized port plate design ensures reliable self-priming performance even at higher operating speeds .

• Through-Drive Capability: Universal through-drive design allows mounting of additional pumps (gear or smaller piston pumps) for multi-circuit systems, enabling flexible and space-saving configurations .

• Durability: Robust bearing system and high-quality materials ensure long service life in demanding continuous operation, with proper filtration maintaining cleanliness to NAS 10 class or better .

• Precision Manufacturing: Components manufactured to tight tolerances ensuring high efficiency and consistent performance over extended service life .

Main Applications (Suitable Equipment):
The F3-PVB5-RSY-31C-20-11 is widely recognized as a versatile and reliable hydraulic power unit for industrial machinery requiring precise pressure control. It is extensively used in:

1. Metal Forming & Recycling Machinery:

• Shearing machines (alligator shears, guillotine shears, plate shears)

• Press brakes and bending machines

• Metal balers and briquetting presses

• Scrap processing equipment and recycling machinery

2. Hydraulic Presses:

• C-frame presses and H-frame presses

• Forging presses and stamping presses

• Compression molding presses

• Wheel pressing and assembly presses

3. Industrial Machinery:

• Injection molding machines - auxiliary hydraulic systems

• Machine tools - hydraulic clamping and feed systems

• Test stands and hydraulic power units

• General industrial hydraulic systems

4. Marine & Offshore Applications:

• Shipboard hydraulic systems - steering gear, deck machinery

• Offshore platform hydraulics - where fire-resistant fluids are required

5. Mining & Heavy Industry:

• Mining machinery - underground equipment with fire safety requirements

• Coal mining equipment - longwall systems, roof supports

• Tunneling machinery auxiliary systems

6. Specialty Applications:

• Die casting machines - where fire-resistant fluids are essential

• Steel mill equipment - continuous casting, rolling mills

• Foundry equipment and heat treatment facilities

• Petroleum and chemical industry hydraulics where fluid compatibility is critical

7. Construction Machinery:

• Concrete pump trucks - auxiliary functions

• Material handlers and scrap handlers

• Cranes and lifting equipment

8. Agricultural & Forestry Equipment:

• Agricultural machinery requiring precise hydraulic control

• Forestry equipment and log splitters