PV29-2R1D-C02 Parker Axial Piston Pump | 61.9cc 275 bar Variable

Product Overview

The PV29-2R1D-C02 and PV29-2R1C-C02 are open-circuit variable displacement axial piston pumps from the Parker Hannifin (formerly Denison) PV series. The PV29 is the largest displacement model in the series, featuring 61.9 cc/rev displacement, and represents the flagship specification within the PV series lineup (PV6 / PV10 / PV15 / PV20 / PV29).

The PV series hydraulic pumps originate from Denison’s classic design and are now fully manufactured and integrated by Parker. The series features pressure compensator (constant pressure) control as the basic control function, with optional load sensing and power limit controls available. With rugged design and compact construction, these pumps deliver reliable hydraulic power even under severe operating conditions.

The PV29 employs a swashplate-type axial piston design, enabling stepless displacement adjustment through variation of the swashplate angle. The housing is manufactured from high-strength cast iron with precision machining, providing excellent fatigue strength and dimensional stability. Critical internal friction pairs feature advanced surface treatment processes that effectively reduce wear and extend service life.

Engineered as a direct OEM-replacement solution, the PV29-2R1D-C02 and PV29-2R1C-C02 fully comply with Parker original design standards and SAE mounting interface specifications, offering 100% direct interchangeability with OEM pumps. Every unit undergoes 100% workload simulation testing prior to shipment, rigorously validating pressure compensator response characteristics, volumetric efficiency, and internal leakage performance to meet or exceed OEM standards.

Complete Model Code Breakdown:

PV29-2R1D-C02

• PV — Series: Open-circuit axial piston variable pump

• 29 — Size: 61.9 cc/rev displacement

• 2 — Control group

• R — Rotation: Right-hand (clockwise, viewed from shaft end)

• 1 — Output shaft: Single output shaft

• D — Control type: Pressure Compensator Control

• C02 — Specific control setting and pressure level code

PV29-2R1C-C02

• PV — Series: Open-circuit axial piston variable pump

• 29 — Size: 61.9 cc/rev displacement

• 2 — Control group

• R — Rotation: Right-hand (clockwise)

• 1 — Output shaft: Single output shaft

• C — Control type: Load Sensing Control

• C02 — Specific control setting and pressure level code

The primary difference between the two models lies in the control type: “D” denotes Pressure Compensator Control (constant pressure control), suitable for systems requiring constant operating pressure; “C” denotes Load Sensing Control, suitable for energy-efficient systems that require automatic flow adjustment based on load variations.

Technical Specifications

• Model: PV29-2R1D-C02 / PV29-2R1C-C02

• Series: Parker Denison PV Series Open-Circuit Axial Piston Variable Pump

• Displacement: 61.9 cc/rev

• Rated Pressure (Continuous): 275 bar

• Peak Pressure (Intermittent): 300 bar

• Maximum Transient Pressure: 276 bar (4000 psi)

• Maximum Speed: 2000 rpm

• Minimum Speed: Approx. 300 – 500 rpm

• Control Type: 2R1D = Pressure Compensator Control / 2R1C = Load Sensing Control

• Rotation Direction: Right-hand (clockwise, viewed from shaft end)

• Output Shaft Type: Single output shaft

• Mounting: SAE 4-bolt flange mounting

• Housing Material: High-strength cast iron

• Weight: Approx. 33 kg

• Operating Temperature Range: 30℃ to 90℃

• Recommended Media: Mineral hydraulic oil and synthetic hydraulic oils

• Port Connections: BSPP or SAE-61 4-bolt flange standard

Key Technical Advantages

1. Large Displacement with High Power Density
With 61.9 cc/rev displacement, the PV29 is the flagship model in the PV series. At 275 bar rated pressure and 2000 rpm, it delivers a theoretical flow of approximately 136 L/min (calculated: 61.9 × 2200 ≈ 136 L/min) and approximately 62 kW of hydraulic power, providing ample hydraulic power for heavy-duty equipment.

2. Flexible Control Options
The PV29-2R1D-C02 is equipped with a standard pressure compensator (constant pressure) controller that automatically reduces displacement upon reaching the set pressure, maintaining constant system pressure while minimizing energy losses and system heat generation. The PV29-2R1C-C02 features a load sensing controller that automatically adjusts pump output flow based on actual load demand, delivering on-demand oil supply that significantly improves system efficiency and reduces energy consumption. Both control types can be flexibly selected based on application requirements.

3. Rugged Cast Iron Housing with Precision Manufacturing
The housing is manufactured from high-strength cast iron with precision machining, providing excellent fatigue strength and dimensional stability. The cast iron material offers superior damping characteristics that effectively absorb vibration and shock loads during operation, extending pump service life. Critical internal friction pairs feature advanced surface treatment processes that effectively reduce wear.

4. Low Noise with High Efficiency
The PV series maintains low noise levels throughout the entire operating range. Optimized swashplate angle and piston kinematics effectively reduce flow pulsation and pressure fluctuation, minimizing system vibration and noise radiation. Additionally, the PV series delivers excellent overall efficiency, reducing energy losses while lowering system temperature rise.

5. Full-Power Through-Drive Capability
The PV series hydraulic pumps feature full-power through-drive capability, allowing multiple pumps to be driven by a single prime mover shaft. When used as the primary pump, the PV29 can have additional PV series pumps or gear pumps mounted on its through-drive shaft to form multi-pump assemblies, meeting the multi-circuit oil supply requirements of complex hydraulic systems.

6. Excellent Interchangeability with Standardized Interfaces
Mounting dimensions fully comply with SAE flange mounting standards, and port connections comply with BSPP or SAE-61 4-bolt flange standards. The pumps are interchangeable with any other piston pumps that meet SAE mounting standards. As a direct OEM-replacement solution for Parker Denison original products, they offer 100% direct interchangeability with OEM pumps—zero modifications required for direct replacement.

7. 100% Factory Tested
Every unit undergoes 100% workload simulation testing prior to shipment, covering pressure compensator response characteristic verification, internal leakage detection, and flow-pressure characteristic curve testing—ensuring every unit meets design performance standards.

Application Areas

The PV29-2R1D-C02 and PV29-2R1C-C02 are widely used in the hydraulic systems of the following industries and equipment:

• Injection Molding Machines: Providing stable, adjustable hydraulic power for precise pressure and flow control during injection, clamping, and other processes

• Die Casting Machines: Delivering high-pressure, high-flow hydraulic power for die casting processes

• Marine Machinery: Deck machinery, steering gear, windlass, and other marine hydraulic systems

• Construction Equipment: Hydraulic systems for excavators, loaders, and other mobile machinery

• Metallurgical Equipment: Rolling mills, continuous casting machines, and other heavy industrial equipment

• Material Handling Equipment: Forklifts, lifting platforms, and more

• Presses and Forging Equipment: Providing precise pressure and speed control

Expert Maintenance Tips

1. Rotation Direction Confirmation
The “R” in the model designation indicates right-hand rotation (clockwise, viewed from the shaft end). Before installation, always verify that the prime mover rotation direction matches the pump’s rotation direction—incorrect rotation will result in pump failure to prime and may cause severe damage to internal components within a short period.

2. Installation Precautions

• Thoroughly clean the mounting flange and spline/keyed shaft mating surfaces before installation to ensure no debris remains

• Use SAE-specified torque values for the 4-bolt mounting flange—avoid over-tightening which may cause housing distortion

• Ensure correct connection of inlet, outlet, and drain ports—the drain port must face upward(PV series from series 44 onward feature three standard drain ports)

• The inlet line must have adequate diameter to prevent starvation or cavitation

3. First Start-Up and Bleeding

• Before first start-up, must fill the pump housing with clean hydraulic oil (ISO VG46 anti-wear hydraulic oil recommended) through the drain or inlet port—never start dry

• Do not start the pump when oil temperature is below 18℃

• After start-up, jog the prime mover to confirm correct rotation direction, then run at low speed with no load for 2–3 minutes to ensure complete air evacuation from the pump and system

• Check for abnormal noise or leakage

4. Pressure Compensator / Load Sensing Controller Adjustment

• The standard pressure compensator set pressure can be adjusted via the adjustment screw

• All PV series axial piston pumps are equipped with an adjustable displacement limiter

• Use an accurate pressure gauge for monitoring during adjustment—avoid over-adjustment

• Adjustment should be performed by qualified technical personnel following the Parker official service manual (MSG30-3245-INST)

5. Fluid and Filtration

• Use high-quality anti-wear hydraulic oil compliant with DIN 51524 standards (ISO VG 46 recommended)

• Maintain system oil cleanliness to ISO 4406 18/15 or better

• The PV series has high cleanliness requirements—install a high-quality filter in the inlet line

• Operating temperature should be maintained within 30℃ to 90℃

6. Periodic Maintenance

• Check mounting bolt torque every 1,000 operating hours

• Regularly monitor system operating pressure to ensure it does not exceed 275 bar rated pressure and 300 bar peak pressure

• Regularly check drain port flow—a significant increase in drain flow may indicate increased internal wear

• If flow output decreases, response becomes sluggish, noise levels increase abnormally, or system temperature rises excessively, inspect and replace worn components promptly