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Hydraulics

HP P4 Series Pumps

Closed Circuit Axial Piston Pumps, Variable Displacement , Max. Displacement from 17cc to 34 cc, SAE B Flange, (Swashplate 18 | 19 | 18 | 18 | 18°), Pressure Intermittent 300 (bar), 4350 (psi).

The axial piston pumps series HP P4 34•46•50•58•65 is designed to operate in a closed circuit, for applications at medium pressure.

Control systems available make it easy to use these pumps in any application for the industrial and mobile field.

Typically the pumps HP P4 are equipped with roller bearings for the swashplate suspension. Alternatively, there are bronze bearings for hydrostatic suspension of the swashplate available on request.

Development of rotating groups, especially designed, united to an accurate study of oil passage sections, allow high-speed rotation, like required by modern diesel engines, giving extreme reliability for working continuous pressure until 400 bar.

It is possible to couple tandem versions, by means of coupling flanges optionally available.

Closed circuit axial piston pumps are used as hydrostatic transmission components in self-propelled machines and for rotary drives in both fixed and mobile equipment of all kinds.

  • Specifications
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    Performance Characteristics

    Designed to work in a closed circuit both for application at medium pressure. -
    Displacement 34 | 46 | 50 | 58 | 65 (cm³) 2,08 | 2,81 | 3,05 | 3,54 | 3.97 (in³)
    Swashplate 18 | 19 | 18 | 18 | 18 (°) -
    Continuous Pressure 300 | 250 (bar) 4350 | 3625 (psi)
    Pressure Intermittent 380 | 320 (bar) 5075 | 4640 (psi)
    Peak Pressure 400 (bar) 5800 (psi)
    - -
    Speed
    3800 | 3800 | 3800 3600 | 3600 max. (minˉ¹) -
    500 min. (minˉ¹) -
    - -
    Weight 28,8 | 28,8 | 31,0 | 33,2 | 33,2 (kg) 63,37 | 63,37 | 68,21 | 73,05 | 73,05 (psi)
    - -
    Continuous Pressure: Average pressure of the normal operating pressure range -
    Intermittent Pressure: Pressure that can be maintained for short periods (for about 10% of the work cycle) -
    Peak Pressure: Maximum allowable pressure regulated by maximum relief valves (max 1-2% of the work cycle) -

    Boost Pump

    Displacement Pressure
    HPP4 034 14 (cm³), 0,86 (in³) 22 (bar), 319 (psi)
    HPP4 046 14 (cm³), 0,86 (in³) 22 (bar), 319 (psi)
    HPP4 050 14 (cm³), 0,86 (in³) 22 (bar), 319 (psi)
    HPP4 058 16 (cm³), 0,98 (in³) 22 (bar), 319 (psi)
    HPP4 065 16 (cm³), 0,98 (in³) 22 (bar), 319 (psi)

    Features and Benefits

    Multiple Units can be Assembled Using axial piston pumps of different sizes, and gear pumps -
    Possible Configurations Include circuits with built-in exchange valves and pressure relief valves -

    Options

    Available with a variety of control options Direct manual, servo-assisted manual, remote hydraulic, remote hydraulic with feedback, On-Off electric in closed center and open center configurations, proportional, electric and hydraulic automotive -
    Electronic Control Logic Options Include automotive, constant speed drive, shift-on-the-fly, and feedback -

    Markets

    Mobile -
    Industrial -
    Forestry -
    Agriculture -

    Applications

    Closed circuit axial piston pumps are used as hydrostatic transmission components in self-propelled machines and for rotary drives in both fixed and mobile equipment of all kinds -
    Fixed displacement motors can also be used in open circuit application Suitable for a variety of hydraulic circuits
    Hoists -
    Fans -
    Drives -
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