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 integrated valve DVM (700 bar) and unloading valve DAM. Therefore this pump is unbeatable regarding multifunctionality and optimization of installation space.

Max. operating pressure LP 100 bar
Displacement volume LP 4.5 to 14 cm³/rev
Max. operating pressure HP 700 bar
Displacement volume HP 0.47 to 2.71 cm³/rev
Max. rotation speed 2000 rpm

Downloads

Combination pumps 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

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 (can be used to limit 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 100 bar
Suction pressure -0.2 bar to 0.5 bar gauge pressure
Displacement volume LP 4.5 to 14 cm³/rev
Displacement volume HP 0.47 to 2.71 cm³/rev
Filtration (recommendation) according to NAS 1638 class 6 resp. ISO/DIN 4406 17/15/12
Weight see technical data sheet
Installation position in tank (vertical shaft)
Axial and radial force onto driving shaft can't be taken up
Max. rotation speed 2000 rpm
Direction of rotation clockwise
Suction height max. 400 mm
Materials excentric shaft and valve block: steel
pump housing and gear pump: cast aluminium