PAVC33R4M26 Parker Piston Pump 33cc 207 bar Variable

Product 1: PAVC33R4M26 Axial Piston Variable Pump

Product Overview

The PAVC33R4M26 is a Parker Hannifin PAVC series medium-pressure super-charged swashplate axial piston variable displacement pump. With a maximum displacement of 33 cm³/rev, rated operating pressure of 207 bar (3000 PSI), peak pressure of 248 bar (3600 PSI), and maximum speed of 3,000 rpm, this open-circuit pump is an ideal solution for medium-pressure hydraulic systems.

This product offers a 100% genuine OEM-interchangeable solution, manufactured to Parker’s original quality standards. Every unit undergoes 100% simulated working condition testing to ensure field reliability matching original equipment performance. The PAVC33R4M26 features a high-strength cast-iron housing, built-in supercharger, replaceable bronze-clad port plate, and hydrodynamic cylinder barrel bearing.

The pump is equipped with an SAE B two-bolt mounting flange, clockwise rotation (viewed from shaft end), 7/8″ keyed shaft, and top outlet/rear inlet port configuration.

Technical Specifications

• Model: PAVC33R4M26

• Manufacturer: Parker Hannifin

• Series: PAVC Series – Medium Pressure Super-Charged Axial Piston Pump

• Max Displacement: 33 cm³/rev (2.0 in³/rev)

• Rated Operating Pressure: 207 bar (3000 PSI)

• Peak Pressure: 248 bar (3600 PSI)

• Maximum Speed: 3,000 rpm

• Minimum Speed: 600 rpm

• Flow Rate (@ 1200 rpm / 21 bar): 39.4 L/min (10.4 GPM)

• Flow Rate (@ 1800 rpm): 59.0 L/min (15.6 GPM)

• Input Power (@ 207 bar): 21.3 kW (28.5 HP)

• Mounting Flange: SAE B two-bolt flange

• Rotation: Clockwise (CW)

• Shaft End: 7/8″ keyed shaft

• Port Connections: SAE 20 inlet (1-5/8″-12 UN-2B O-ring); SAE 12 outlet (1-1/16″-12 UN-2B O-ring); SAE 4 signal port “B” (7/16″-20 UNF-2B); SAE 4 drain port “A” (7/16″-20 UNF-2B)

• Housing Material: High-strength cast iron

• Seals: NBR

• Ambient Temperature Range: -40°C to +71°C

• Optimum Viscosity: 30–50 cSt (range 17–180 cSt)

• Recommended Cleanliness: ISO 4406 16/13

• Weight: Approx. 16 kg

Key Technical Advantages

1. Built-in Supercharger for High-Speed Capability
The PAVC33R4M26 features a built-in supercharger that ensures adequate inlet charging at high speeds, preventing cavitation. This design enables stable operation at up to 3,000 rpm, placing it among the leaders in its class.

2. Cartridge-Type Controls – Field Changeable
All control functions utilize cartridge-type valve designs that can be individually replaced in the field without removing the pump from the system. This significantly reduces troubleshooting and repair downtime.

3. Replaceable Bronze-Clad Port Plate + Hydrodynamic Cylinder Bearing
The replaceable bronze-clad port plate offers excellent wear resistance and self-lubricating properties. The hydrodynamic cylinder barrel bearing forms a stable oil film during high-speed rotation, extending the service life of critical friction pairs.

4. Two-Piece Housing Design for Easy Servicing
The two-piece housing construction allows access to internal components without completely removing the pump from the prime mover – a significant advantage in field repair scenarios.

5. Full Pressure Rating on Water Glycol Fluids
The PAVC series is fully rated for most water glycol hydraulic fluids, making it suitable for applications with strict fire resistance requirements.

Application Areas

• Injection Molding: Injection molding machines, extruders – precise hydraulic power for clamping and injection

• Die Casting: Die casting machines – stable high-pressure oil for shot and clamping systems

• Machine Tools: Precision machine tools, CNC machining centers – hydraulic clamping, tool changing, and table feed

• Material Handling: Forklifts, lift platforms – hydraulic lifting and steering power

• Industrial Machinery: Metal forming equipment, presses – variable flow supply for medium-pressure systems

Expert Maintenance Tips

1. Housing Priming Before First Start
Before starting a newly installed or overhauled PAVC33R4M26, fill the pump housing with clean hydraulic fluid through the drain port until fluid overflows from the highest point. Never start the pump with an empty housing.

2. Fluid Cleanliness Control
Maintain fluid cleanliness to ISO 4406 16/13 or better. Use high-precision return filters (β10≥75). Contamination is the leading cause of wear on the port plate and cylinder block face.

3. Drain Line Arrangement
The drain line must return directly to the tank with back pressure not exceeding 7 bar (100 PSI). Keep drain lines as short and straight as possible. The drain port should be oriented upward to maintain oil fill in the housing.

4. Pressure Compensator Setting
Factory differential pressure setting for PAVC33 is approximately 150 PSI (10 bar). When field-adjusting, monitor with a 0–207 bar (0–3000 PSI) gauge at the outlet. Adjustments should be within 22–26 bar (325–375 PSI).

5. Shaft Alignment Precision
Maintain shaft concentricity within 0.010 inch (0.25 mm) TIR. Use standard flexible couplings to compensate for minor misalignment.

Product 2: PAVC65BR13 Axial Piston Variable Pump

Product Overview

The PAVC65BR13 is a Parker Hannifin PAVC series medium-pressure super-charged swashplate axial piston variable displacement pump. With a maximum displacement of 65 cm³/rev (4.0 in³/rev), rated operating pressure of 207 bar (3000 PSI), peak pressure of 248 bar (3600 PSI), and maximum speed of 3,000 rpm, this pump delivers exceptional flow capacity for medium-pressure applications.

This product offers a 100% genuine OEM-interchangeable solution manufactured to Parker’s original quality standards. Every unit undergoes 100% simulated working condition testing. The PAVC65BR13 features an SAE C two-bolt mounting flange, 1-1/4″ keyed shaft, and top outlet/rear inlet configuration.

Technical Specifications

• Model: PAVC65BR13

• Manufacturer: Parker Hannifin

• Series: PAVC Series – Medium Pressure Super-Charged Axial Piston Pump

• Max Displacement: 65 cm³/rev (4.0 in³/rev)

• Rated Operating Pressure: 207 bar (3000 PSI)

• Peak Pressure: 248 bar (3600 PSI)

• Maximum Speed: 3,000 rpm

• Minimum Speed: 600 rpm

• Flow Rate (@ 1200 rpm / 21 bar): 78.7 L/min (20.8 GPM)

• Flow Rate (@ 1800 rpm): 118.1 L/min (31.2 GPM)

• Input Power (@ 207 bar): 43.1 kW (57.8 HP)

• Mounting Flange: SAE C two-bolt flange

• Rotation: Clockwise (CW)

• Shaft End: 1-1/4″ keyed shaft

• Port Connections: SAE 24 inlet (7/8″-12 UN-2B O-ring); SAE 16 outlet (1-5/16″-12 UN-2B O-ring); SAE 4 signal port “B” (7/16″-20 UNF-2B); SAE 6 drain port “A” (9/16″-18 UNF)

• Housing Material: High-strength cast iron

• Seals: NBR

• Ambient Temperature Range: -40°C to +71°C

• Optimum Viscosity: 30–50 cSt (range 17–180 cSt)

• Recommended Cleanliness: ISO 4406 16/13

• Weight: Approx. 28 kg

Key Technical Advantages

1. 65 cc Large Displacement for High-Flow Medium-Pressure Systems
With 65 cm³/rev displacement delivering up to 118 L/min at 1800 rpm under 207 bar, the PAVC65BR13 offers exceptional power density for medium-pressure, high-flow hydraulic systems.

2. Built-in Supercharger Ensures High-Speed Charging
Like all PAVC series pumps, the PAVC65 features a built-in supercharger ensuring adequate inlet charging at the maximum speed of 3,000 rpm – particularly valuable in mobile applications with fluctuating speeds and challenging inlet conditions.

3. SAE C Heavy-Duty Flange for Superior Load Capacity
The SAE C two-bolt mounting flange offers higher load capacity and better mounting rigidity than SAE B, making it suitable for direct engine-mounted applications and high-vibration environments.

4. Multiple Control Options for Maximum Flexibility
The PAVC series supports pressure compensation, load sensing, power (torque) limiting, remote pressure compensation, electrohydraulic pressure, and electrohydraulic flow (servo control). The PAVC65BR13 can be configured with the appropriate control module for each specific application.

5. Low Noise Operation
Noise levels for the PAVC65 at 207 bar range from 75–81 dB(A) – among the best in its class and ideal for indoor environments with strict noise restrictions.

Application Areas

• Construction Equipment: Excavators, loaders – implement hydraulics and travel drives

• Agricultural Machinery: Large combine harvesters, tractors – hydraulic systems and auxiliary functions

• Industrial Equipment: Metal presses, waste balers – high-flow medium-pressure hydraulics

• Material Handling: Heavy-duty forklifts, reach stackers – lifting and tilting systems

• Mining Equipment: Underground loaders, crushers – reliable hydraulic power in harsh conditions

Expert Maintenance Tips

1. Suction Line Design
At 1800 rpm, the PAVC65 delivers up to 118 L/min. Ensure sufficient suction line diameter to maintain inlet velocity below 1.2 m/s. Inlet vacuum at 1800 rpm must not exceed 5 in Hg.

2. Shaft Alignment Precision
For SAE C flange pumps, maintain shaft concentricity within 0.010 inch (0.25 mm) TIR. Use standard flexible couplings to compensate for minor misalignment.

3. Housing Pressure Monitoring
Maximum housing pressure for the PAVC65 must not exceed 1.72 bar (25 PSI). Install a pressure gauge on the drain line for regular monitoring.

4. Pressure Compensator Adjustment
Factory differential pressure setting for PAVC65 is approximately 150 PSI (10 bar). Adjustments should be within 22–26 bar (325–375 PSI). Monitor with a 0–207 bar (0–3000 PSI) gauge at the outlet.

Product 3: PAVC100X3808/22 Axial Piston Variable Pump

Product Overview

The PAVC100X3808/22 is the largest displacement model in the Parker Hannifin PAVC series medium-pressure super-charged swashplate axial piston variable displacement pump line. With a maximum displacement of 100 cm³/rev (6.1 in³/rev), rated operating pressure of 207 bar (3000 PSI), peak pressure of 248 bar (3600 PSI), and maximum speed of 2,600 rpm, this pump delivers industry-leading flow capacity.

The PAVC100 is the only model in the PAVC series with thru-shaft capability, allowing series mounting of additional pumps.

This product offers a 100% genuine OEM-interchangeable solution manufactured to Parker’s original quality standards. Every unit undergoes 100% simulated working condition testing.

Technical Specifications

• Model: PAVC100X3808/22

• Manufacturer: Parker Hannifin

• Series: PAVC Series – Medium Pressure Super-Charged Axial Piston Pump

• Max Displacement: 100 cm³/rev (6.1 in³/rev)

• Rated Operating Pressure: 207 bar (3000 PSI)

• Peak Pressure: 248 bar (3600 PSI)

• Maximum Speed: 2,600 rpm

• Flow Rate (@ 1200 rpm / 21 bar): 119.6 L/min (31.6 GPM)

• Flow Rate (@ 1800 rpm): 179.8 L/min (47.5 GPM)

• Input Power (@ 207 bar): 71.2 kW (95.5 HP)

• Maximum Flow Rate: 260 L/min (69 GPM)

• Thru-Drive: Supported (PAVC100 only)

• Mounting Flange: SAE C

• Shaft End: 1-1/4″ keyed shaft

• Port Position: Top outlet / bottom inlet

• Housing Material: High-strength cast iron

• Maximum Noise Level: 79 dBA

• Radial Load Capacity: 104 kg (230 lb)

• Weight: Approx. 50 kg

Key Technical Advantages

1. 100 cc Super-Large Displacement – Flow Leader in Medium-Pressure Systems
With 100 cm³/rev displacement delivering up to 260 L/min at 207 bar and input power of 71.2 kW (95.5 HP), the PAVC100 is the premier choice for high-flow medium-pressure applications.

2. Exclusive Thru-Shaft Capability for Simplified Multi-Pump Systems
The PAVC100 is the only PAVC series model with thru-shaft capability, allowing direct series mounting of gear or piston pumps without additional power dividers or transfer cases.

3. High-Strength Cast-Iron Housing with Exceptional Radial Load Capacity
The high-strength cast-iron housing offers 104 kg (230 lb) radial load capacity, capable of withstanding radial loads from belt or gear drives without additional bearing support.

4. Built-in Supercharger for Large-Displacement High-Speed Charging
Although the PAVC100 has a maximum speed of 2,600 rpm, slightly lower than the PAVC33/65, the built-in supercharger ensures adequate charging at full displacement and speed.

5. Full Pressure Rating on Water Glycol Fluids
The PAVC100 is fully rated for water glycol hydraulic fluids, making it suitable for high-temperature environments with strict fire safety requirements in metallurgy and die casting.

Application Areas

• Metallurgical Equipment: Rolling mill hydraulics, continuous casters – high-flow medium-pressure power

• Die Casting: Large die casting machines – high-speed injection and high-flow clamping

• Injection Molding: Large injection molding machines – clamping, injection, and ejection systems

• Construction Equipment: Large excavators, loaders – implement and steering hydraulics

• Mining Machinery: Large crushers, screening equipment – continuous high-flow supply under heavy loads

• Marine Machinery: Steering gear systems, winch drives – high-flow medium-pressure hydraulics

Expert Maintenance Tips

1. Thru-Drive Series Mounting Precautions
When using the PAVC100 thru-drive for series mounting of additional pumps, ensure the total torque load does not exceed the thru-drive rating. Use Parker-recommended couplings and mounting adapters.

2. Suction Line Design (High-Flow Requirements)
At 1800 rpm, the PAVC100 delivers 179.8 L/min. Ensure suction line diameter is sufficiently large (SAE 24 or 2″ piping minimum) to maintain inlet velocity below 1.2 m/s. Keep suction lines as short as possible with minimal bends.

3. Housing Pressure and Drainage
Maximum housing pressure for the PAVC100 is 7 bar (100 PSI). Drain lines must return directly to the tank – never parallel with return lines. Install a pressure gauge on the drain line for regular monitoring.

4. Pressure Compensator Special Settings
Factory differential pressure setting for PAVC100 is 300 PSI (21 bar) – higher than the 150 PSI (10 bar) for PAVC33/65. Adjustments should be within 34–40 bar (500–575 PSI).

5. Radial Load Management
The PAVC100 has 104 kg radial load capacity. If using belt or gear drives, ensure the radial load direction aligns with the pump’s allowable direction and does not exceed the rating. Use flexible couplings at the drive end to minimize radial load impact on pump bearings.