Parker P1/PD Series Medium Pressure Piston Pumps for Mobile Machinery

I. Core Technology and Performance Advantages

1. Structural Design

• Adopts axial piston variable displacement technology to achieve precise flow control.
• Compact overall dimensions save installation space and adapt to the limited layout of mobile machinery.
• Innovative elastomer sealing design eliminates traditional gasket sealing, effectively preventing external leakage.
• Robust bearing system ensures long service life under harsh working conditions.

2. Performance Characteristics

• Low-noise operation: Special design reduces flow pulsation and further reduces working noise.
• High working efficiency: Reduces power loss and heat generation, improving system energy efficiency.
• Supports high drive speed, adapting to the characteristics of mobile machinery engines.
• Optional built-in impeller enhances self-priming capacity, suitable for high-altitude or high-speed working conditions.

3. Interface Standards

• Complies with SAE and ISO standard mounting flanges and oil ports, facilitating system integration and maintenance.
• Multiple control options support “leak-free” adjustment to meet different control needs.

II. Overview of Technical Parameters

III. Control Options and Function Expansion

1. Pressure Compensation Control: Automatically adjusts flow to maintain the set pressure, suitable for load-sensitive systems.
2. Flow Control: Fixed flow output, suitable for applications requiring constant speed.
3. Proportional Control: Precisely adjusts displacement through electrical signals to achieve closed-loop control.
4. Torque Limiter (optional): Prevents system overload and protects the pump and drive components.
5. “Leak-Free” Adjustment: Ensures no hydraulic oil leakage during control adjustment, improving system reliability.

IV. Application Fields

1. P1 Series (Special for Mobile Machinery)

• Construction Machinery: Excavators, loaders, cranes, etc.
• Agricultural Machinery: Tractors, harvesters, rotary tillers, etc.
• Special Vehicles: Aerial work platforms, sanitation vehicles, airport ground support equipment.
• Forestry Machinery: Logging machines, skidders, etc.

2. PD Series (Industrial Applications)

• Industrial Automation Production Lines
• Machine Tool Hydraulic Systems
• Material Handling Equipment
• Test Benches and Simulation Systems

V. Selection and Maintenance Points

1. Selection Recommendations

• Select the appropriate model according to the system’s working pressure, flow requirements, and control method.
• Consider the matching of installation space and interface standards.
• For special working conditions (such as high altitude, low temperature environment), select the corresponding configuration.

2. Maintenance Points

• Strictly select the hydraulic oil type and viscosity according to the manual requirements.
• Replace the filter element regularly to maintain oil cleanliness.
• Pay attention to the maintenance of seals to avoid external contamination.
• Control the oil temperature within the recommended range to extend the pump service life.