Parker Medium Pressure Piston Pumps PD/P1 Series

Parker P1 PD series medium pressure piston pump

Description:

The Parker PD/P1 Series represents a family of variable‑displacement, medium‑pressure axial piston pumps designed for open‑circuit mobile and industrial hydraulic applications. Compact in design yet robust in performance, these pumps deliver continuous operating pressures up to 280 bar (4,060 psi), with flow rates and displacements scalable according to the application needs. Their cradle‑bearing construction, “ripple chamber” pulsation‑reduction design, and optional electronic controls make them ideal for demanding hydraulic systems in construction, material handling, mobile machinery, and more.

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Advantages

  • Variable displacement & flexible flow control: Multiple displacement options (from 18 cm³/rev up to 140 cm³/rev) allow tailored flow rate and pressure for different tasks.

  • Medium-pressure capability: Continuous operating pressure up to 280 bar (4,060 psi), with intermittent or peak ratings higher depending on model.

  • Compact & robust design: Cast‑iron body with cradle‑bearing and low-friction cam and tapered‑roller shaft bearings ensures durability and reliability in harsh environments.

  • Smooth, quiet operation: “Ripple chamber” technology reduces pressure pulsations and noise — beneficial in mobile and industrial settings.

  • Wide operating conditions: Supports a wide temperature range (e.g. –40 °C to +95 °C) and is compatible with standard hydraulic fluids; suitable for diverse industrial and mobile applications.

  • Design flexibility & ease of integration: Offers various port & mounting options (SAE, ISO; side or end ports), with optional electronic controls for proportional displacement, load‑sense, or fan‑drive applications.

Parameter Specification / Details
Pump Type Variable‑displacement, axial piston, medium‑pressure piston pump (open‑circuit)
Series PD (industrial) / P1 (mobile)
Displacement Options 18, 28, 45, 60, 75, 100, 140 cm³/rev
Maximum Continuous Pressure 280 bar (4,060 psi)
Intermittent / Peak Pressure Up to ~320–350 bar (depending on variant)
Flow Rate (max) Up to ~278 L/min (≈73 GPM) depending on displacement & speed
Operating Speed Range Typically 600 – 1,800 rpm (varies with model)
Fluid Type Standard hydraulic fluids (with typical viscosity range)
Fluid Temperature Range –40 °C to +95 °C (–40 °F to +200 °F)
Mounting / Port Options SAE / ISO flanges or threaded ports; side, end, or opposing ports; case‑drain available for flexible mounting.
Shaft & Drive Capability Cradle‑bearing with tapped thru‑drive capability (for drives / PTO)
Seal & Bearing Design Elastomer seals (gasket‑free) to avoid external leakage; low‑friction cam and taper‑roller shaft bearings for long life and low maintenance.
Noise / Smoothness Low noise and low pressure ripple thanks to “ripple chamber” design and nine‑piston configuration (in many variants)
Additional Control Options Pressure‑limiter, load‑sense, electronic displacement control, unloading, proportional and fan‑drive control; optional electronic controls via ECU and CANbus.
Applications Mobile equipment (construction machinery, loaders, forestry, agriculture), industrial machines (presses, molding, material handling), oil & gas equipment, pumps, and various hydraulic systems.