Combination pumps SKPI

BIERI radial piston pumps SKPI, adapted with external gear pump, are very light and compact designed 2-stage pump units (HP/LP) with hollow shaft. The new IEC flange - in three sizes - enables optimum space-saving installation with a direct mounted E-motor (without bell housing and coupling).
 Now the pump is available with or without integrated valve DVM (700 bar) and unloading valve DAM. Therefore this pump is unbeatable regarding multifunctionality and optimization of installation space.

Operating pressure LP up to 250 bar
Displacement volume LP 4,5 bis 14.0 cm³/U
Operating pressure HP up to 700 bar
Displacement volume HP 0,47 bis 2,71 cm³/U
Speed Range up to 2000 min⁻¹

Downloads

[Translate to EN:] Kombinationspumpen SKPI
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
Venturi suction hose Self-venting
Modular pump system Enables supply of standard pumps as well as special customized models
Valve block now equipped with pressure relief valve DVM (700 bar) and unloading valve DAM Easy to adjust and fatigue resistant
Available also without valve block Valves can be individually installed outside of the tank

Applications

  • 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 assembling 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
Max. operating pressure HP 700 bar
Max. operating pressure LP without valve block 250 bar
Max. operating pressure LP with valve block 100 bar (preset by producer)
Suction pressure -0,2 bar up to 0,5 bar (relative)
Displacement volume LP 4,5 bis 14,0 cm³/U
Displacement volume HP 0,47 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 (vertical)
Radial force / Axial force onto driving shaft Not allowed
Max. speed 2000 min⁻¹
Direction of rotation Clockwise
Suction height Max. 400 mm
Material Eccentric shaft and valve block: steel
Pump housing and gear pump: cast aluminium