Group 3 Gear Pumps

PGP 500 Parker Gear pumps offer superior performance, high efficiency and low noise operation at high operating pressures.
They are produced in three frame sizes (PGP 503, PGP 511, PGP 517) with displacements ranging from 0.8 to 70 cm³/rev. A wide variety of standard options are available to meet specific application requirements.
Pump type Heavy-duty, aluminium, external gear.
Mounting options SAE, rectangular, thru-bolt standard specials on request.
Ports SAE and metric split flanges and others
Shaft style SAE splined, keyed, tapered, cylindrical tang drive, specials on request .
Speed 500 - 4000 rpm.
Drive direct with flexible coupling is recommended.
Units subject to axial or radial loads must be specified with an outboard bearing.
Inlet pressure Operating range 0.8 to 2 bar abs.
Min. inlet pressure 0.5 bar abs. Short time without load. Consultation is recommended.
Hydraulic fluids Hydraulic oil H-LP, DIN 51525
Fluid temperature Range of operating temperature -15 to +80°C.
Max. permissible operating pressure dependent on fluid temperature.
Temperature for cold start -20 to -15°C at speed = 1500 rpm.
Max. permissible operating pressure dependent on fluid temperature.
Fluid viscosity Range of operating viscosity 8 to 1000 mm²/s.
Max. permissible operating pressure dependent on viscosity.
Viscosity range for cold start 1000 to 2000 mm²/s at operating pressure p=10 bar and speed n=1500 rpm.
Range of ambient temperature -40°C - +70°C
Filtration According to ISO 4406 Cl. 16/13
Direction of rotation Clockwise, counter-clockwise or dual.
Multiple pumps available in tandems or triples.
Max. shaft loading must be conform to the limitations shown in the shaft loading rating table in the catalogue.
Max. load is determined by adding the torque values for each pumping section that will be simultaneously loaded.