Piston Pumps optimize hydraulic fan drive systems.

Press Release Summary:



Optimized for open-circuit applications, 18 and 28 cc P1/PD Series piston pumps enhance hydraulic fan drive system performance, which can subsequently help reduce fuel consumption and emissions output for off-highway vehicles. Each variable, axial piston pump is engineered for continuous operation at temperatures and pressures (280 bar max) in emissions-compliant diesels. Suited for medium-duty mobile (P1) and industrial (PD) applications, pumps are available with several control options.



Original Press Release:



New Parker Piston Pumps Offer Efficient Operation in Hydraulic Fan Drive Systems, Further Reducing Fuel Consumption and Emissions Output for Off-Highway Vehicles



MARYSVILLE, OH - New 18 and 28cc P1/PD Series piston pumps are now available from Parker Hannifin, the global leader in motion and control technologies. Design optimized for open-circuit applications, P1/PD pumps can enhance the performance of hydraulic fan drive systems, helping reduce fuel consumption and emissions output for off-highway vehicles.

EPA Tier 4 emissions standards for off-highway diesel engines are forcing engineers to develop new solutions for cooling construction, agricultural and industrial equipment. Hydraulic fan drive systems - an alternative to traditional belt-driven fans - have received increasing attention in recent years. The ability to control fan speed independent of engine speed provides significantly improved cooling efficiency and fuel economy.

P1/PD pumps are engineered for continuous, reliable, efficient operation at the higher temperatures and pressures at work in today's emissions-compliant diesels. In a variable electro-hydraulically controlled fan system, a P1/PD pump can provide up to 5% fuel savings and reduce cooler size by up to 50% compared to a standard fixed displacement system.

Parker's new 18 and 28cc displacement pumps are best suited for improving the performance of fan drive, steering, accessory and load sensing systems on construction and material handling equipment including backhoes, excavators, skid steers, telehandlers and cranes. Including 45, 60, 75, 100 and 140cc displacement models, the P1/PD Series is now complete with a variable, axial piston pump solution for a wide range of medium-duty mobile (P1) and industrial (PD) applications.

Besides fuel savings and emissions reductions, customers will appreciate the P1/PD pumps' compact size, which allows considerable mounting flexibility. Their low noise output also helps companies comply with OSHA "Noise at Work" standards - particularly in industrial settings - while potentially reducing the expense of extra sound insulation for machines.

Worldwide, P1/PD pumps are used in a wide range of applications including concrete pumpers, oilfield power units, mining hauling trucks, horizontal drillers, marine bow thrusters, military transport vehicles, water jet cutters, plastic extrusion machines, head presses and injection molders, among many others.

Rated for continuous operation at pressures up to 280 bar, P1/PD pumps feature:

  • Compact, round housing (quieter than comparable "flat surface" designs)
  • Low flow ripple to further reduce noise
  • Simple hydraulic controls with "no leak" adjustments
  • Elastomer seals to eliminate gaskets and external leakage
  • SAE and ISO standard mounting flanges and ports
  • Tapered-roller shaft bearings
  • Low friction, hydrostatically balanced swash plate saddle bearings
  • Full power through-drive capability
  • End or side inlet and outlet ports
  • Case drain ports for horizontal or vertical shaft-up mounting
  • Optional maximum and minimum volume stops
  • Optional case-to-inlet check valve to extend shaft seal life

    Several control options are also available:
  • Standard pressure limiter
  • Pressure limiter and torque control
  • Load sensing with pressure limiter
  • Load sensing with pressure limiter and torque control
  • Pilot operated pressure limiter with ISO4401 interface
  • Pilot operated pressure limiter with mechanical adjustment and vent port
  • Pilot operated pressure limiter with electrical adjustment
  • Precise proportional Digital Control Options

    For more information about Parker Hannifin P1/PD piston pumps, visit www.phpump.com or www.parker.com.

    About Parker Hannifin's Hydraulic Pump Division
    The Hydraulic Pump Division was formed in 2004 when Parker Hannifin enlarged its significant piston pump business with the acquisition of Denison Hydraulics. The division is a leading worldwide manufacturer of hydraulic components and systems for earthmoving, drilling and construction vehicles; for mining equipment; for pulp and paper, chemical and other processing equipment; for ships and ordnance equipment; and for such in-plant machines as machine tools, plastic molding, die casters and stamping presses.

    With annual sales exceeding $10 billion in fiscal year 2009, Parker Hannifin is the world's leading diversified manufacturer of motion and control technologies and systems, providing precision-engineered solutions for a wide variety of mobile, industrial and aerospace markets. The company employs approximately 52,000 people in 48 countries around the world. Parker has increased its annual dividends paid to shareholders for 53 consecutive years, among the top five longest-running dividend-increase records in the S&P 500 index. For more information, visit the company's web site at www.parker.com, or its investor information site at www.phstock.com.

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