Short Description
Premium factory-direct aftermarket Parker PD Series Variable Displacement Axial Piston Pumps (Complete Assemblies), engineered as 100% plug-and-play interchangeable drop-in power units for open-circuit mobile and industrial applications. Covering full factory frames from PD018 up to PD140, our heavy-duty complete pumps feature compact rigid cast-iron housings, hydro-dynamically balanced bimetal rotators, and low-noise swashplate groups. Every assembly is fully verified to sustain continuous operating pressures up to 280 bar and peak pressures of 310 bar in aerial lifts, truck cranes, and utility fleet systems.
Key Technical Highlights
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100% Plug-and-Play Envelope Matching: Fully reverse-engineered based on original Parker PD series technical specifications. Standard SAE dynamic mounting interfaces, splined/keyed output shafts, and fluid port threads line up perfectly with your existing hydraulic circuit lines—zero modifications needed.
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Low-Noise & High-Speed Performance: Designed with specialized ripple-damping internal port geometry and heavy-duty saddle bearings. Our complete PD pumps operate with extremely low acoustic pulsation and comfortably handle high drive inputs up to 2600+ RPM.
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Excellent Variable Control Regulators: Available with a complete suite of integrated variable controller configurations, including standard Pressure Limiters, Load Sensing (LS) valves, and Remote Controls, calibrated directly at our plant to prevent dynamic setting lag.
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Thru-Drive Expansion Capability: Built with standard rear-shaft thru-drive options (SAE A, B, or C pads). Allows for convenient tandem pump configurations to supply auxiliary secondary fluid loops simultaneously.
| Frame Model & Displacement | Available Control Valving Options | Primary Mobile Equipment & Machinery Scope |
|---|---|---|
| PD018 / PD028 / PD045 | M: Standard Pressure Compensator S: Load Sensing (LS) + Pressure Limiter A: Remote Pressure Control C: Electronic Proportional Control |
Aerial Boom Lifts, Scissors Lifts, Compact Skid Steer Loaders, Truck Mounted Utility Cranes, Light Paving Rollers. |
| PD060 / PD075 / PD100 / PD140 | Medium Hydraulic Excavators, Combined Harvesters, Industrial HPUs, Plastic Processing Auxiliary Circuits, Forestry Machinery. |
Haozheng Hydraulic Production Processing Diagram
Haozheng Hydraulic Honorary Certificate
Exhibition
FAQ
Q1: Parker PD series pumps use very detailed alphanumeric ordering codes. How can I be certain your replacement pump matches my exact model?
A: Accurate coding is critical for any plug-and-play installation. The Parker PD string indicates vital options like shaft types (e.g., SAE B 13-tooth spline), rotation orientation (Clockwise/Counter-Clockwise), paint finish, and specific control block variations (e.g., PD045PS02SRS5AM00E0000000). To guarantee a 100% accurate drop-in unit, our engineering desk cross-checks either your original factory code or your machinery’s OEM part number prior to dynamic testing and crating.
Q2: Load sensing circuits (S control code) require extremely fine tuning. How do you ensure the pump won’t stall my machine?
A: A poorly calibrated load-sensing regulator can cause systemic hunting oscillations or sluggish actuator responses. At our facility, every complete PD pump undergoes dynamic flow and torque testing loops. We fine-tune the differential pressure $\Delta p$ spring metrics on the control valve block under real-load simulations, certifying that the displacement response remains sharp, crisp, and fully fluid-stable right out of the shipping crate.
