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 |
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 |
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 |
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