Hydraulic HousePumps & MotorsPARKER

PARKER PGP 511 Series External Gear Pump

Pump type fixed-displacement external gear pump.
Housing material high-strength aluminum alloy.
Configuration available in single and multi-section versions.

Technical data

Pump type: fixed-displacement external gear pump.
Housing material: high-strength aluminum alloy.
Configuration: available in single and multi-section versions.
Rotation direction: clockwise (CW) or counterclockwise (CCW).
Drive shafts: SAE splined, keyed, tapered, or cylindrical options.
Operating limits
Rotational speed: 500 - 4,000 rpm, depending on displacement and load.
Maximum continuous pressure: up to 250 bar (3,625 psi).
Maximum intermittent peak pressure: up to 275 bar (3,988 psi).
Working fluid temperature: -15°C to +80°C, with cold start down to -20°C.
Ambient temperature: -40°C to +70°C.
Fluid viscosity: 8 - 1000 mm²/s, up to 2000 mm²/s during cold start.
Required filtration: cleanliness class 19/17/13 according to ISO 4406.
Performance data by displacement code
PGP511 Series parameters vary as displacement code increases

Key Parameters

Code	Displacement (cm³/rev)	Max. Continuous Pressure (bar)	Max. Peak Pressure (bar)	Maximum Speed (RPM)
0060	6.0
0080	8.0
0100	10.0
0110	11.0
0140	14.0
0160	16.0
0190	19.0
0230	23.0
0270	27.0
0330	33.0

01Parker Hannifin PGP511 Series aluminum external gear pumps are distinguished by high efficiency, compactness, and reliability. This series is widely used in agricultural, construction, forestry, and industrial hydraulic systems.
02High operating efficiency and power
03High power density: thanks to the aluminum construction, the pump has low weight and compact dimensions while producing high power.
04Pressure balancing: special thrust blocks maintain volumetric efficiency under all operating conditions.
05High working pressure: the pump can operate steadily at continuous pressures up to 250 bar (3,625 psi).
06High rotational speed: depending on the model, maximum speed ranges from 3,500 to 4,000 rpm.
07Low noise level and stability
08Optimized gears: the 12-tooth profile significantly reduces pressure pulsation and ensures unusually quiet operation.
09Noise minimization (H version): special Parker PGP511H Silent models use a single-point contact rotor, almost completely eliminating vibration and the need for additional noise-insulation systems.
10Construction durability and versatility
11Long service life: high-strength materials and large-diameter journal bushings reduce bearing loads and increase pump durability.
12Multi-section construction: the three-piece design allows multi-section tandem pumps to be assembled for distributing different flows.
13Wide fluid compatibility: the pump is compatible with standard hydraulic oils as well as fire-resistant, water-glycol, and biodegradable fluids.