Combination pumps KKP

BIERI radial piston pumps KKP are very light and compact designed 2-stage pump units (HP/LP) with hollow shaft. This enables optimum space-saving installation with a direct mounted E-motor (without bell housing and coupling).
 Adapted with integrated valves this pump series is unbeatable regarding multifunctionality and optimization of installation space.

Operating pressure LP up to 160 bar
Displacement volume LP 0,94 bis 5,43 cm³/rev
Operating pressure HP up to 700 bar
Displacement volume HP 0,17 bis 2,71 cm³/rev
Speed Range 1500 up to 3600 rpm

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[Translate to EN:] Kombinationspumpen KKP
Features Advantages
Hollow shaft and integrated valves extremely compact and weight-saving
Valve controlled and low piston clearance Very high volumetric efficiency over a broad speed range
Bearing designed for maximum constant pressure (700 bar) Long operating life
Optimized design of inlet and outlet valves Very high suction performance
Minimized dead volume of pistons, linked together with optimized design of suction valves Self-venting
Modular pump system Enables supply of standard pumps as well as special customized models

Applications

  • For applications that require high flow rates in the low pressure (LP) area and
    low rates in the high pressure (HP) area
  • Presses
  • Power units for industrial application
  • Hydraulic tools
  • Rescue tools
  • Clamping  technology & jig construction
  • Energy
  • Construction & recycling
  • Lifting and transport systems
  • Ship building

Design

  • Integrated low-pressure unloading valve
  • Integrated fail safe valve (not suitable for continuous operation, must not be used to restrict the system pressure!)
  • With hollow shaft for direct mounting of motor without bell housing and coupling

Technical Data

Hydraulic fluid Mineral oil according to DIN 51524 (other fluids on request)
Fluid temperature range -20 to 80°C
Ambient temperature range -30 to 50°C
Viscosity range 12 bis 220 mm²/s
Operation pressure at suction port -0,2 bar to 0,5 bar (relative)
Max. operating pressure HP 700 bar
Max. operating pressure LP 60 bar resp. 160 bar (preset by producer)
Displacement volume LP 0,94 bis 5,43 cm³/U
Displacement volume HP 0,17 bis 2,71 cm³/U
Filtration (recommendation) According to NAS 1638 class 6 resp. ISO/DIN 4406 17/15/12
Weight See technical data sheet
Installation position In oil reservoir (any)
Max. speed range See technical data sheet
Direction of rotation (position in tank) Any
Suction height Max. 150 resp. 400 mm
Material Eccentric shaft and valve block: steel
Pump housing and pressure flange: aluminium