Parker Gear Oil Pump | PGP031

Parker PGP031 Series Hydraulic Pump

Parker PGP031 Series Fixed Displacement Gear Oil Pumps

Parker’s PGP031 Series fixed/positive displacement gear oil pumps deliver proven performance and long service life in demanding mobile and industrial applications. Built with high-strength cast iron housings and roller bearing construction, these hydraulic gear pumps are engineered for exceptional durability and superior resistance to oil contamination.

Designed for reliability and efficiency, the 031 Series gear pumps provide smooth, consistent flow and pressure capabilities ideal for use in vocational trucks, winches, oil and gas equipment, and other heavy-duty hydraulic systems.

Available in single or multi-section configurations, the 031 Series can be equipped with an integral valve option to meet a wide range of system requirements. Their robust design ensures dependable performance under continuous operation, making them a preferred choice for OEM and aftermarket hydraulic applications.

Technical Specifications

  • Operating Pressure: up to 3000 psi, up to 207 bar
  • Flow Rate: n/a
  • Displacement: up to 65 cm3/rev, up to 3.9 inch3/rev
  • Body Material: Cast Iron
  • Drain Option: No
  • Charge Pump Included: No
  • Circuit Path: Open
  • Configuration: Single, Tandem, Multiple
  • Energy Recovery Capability: No
  • Filter Included: No
  • For Fluid Type: Standard Hydraulic Fluids, Phosphate-ester
  • Maximum Displacement: 65 cm3/rev, 3.9 inch3/rev
  • Maximum Flow Rate: 38.4 gal/min
  • Maximum Fluid Temperature: 80 °C, 180 °F
  • Minimum Fluid Temperature: -20 °C, 0 °F
  • Maximum Operating Pressure: 207 bar, 3000 psi
  • Radial Load Capacity: Consult Parker, Consult Parker
  • Maximum Operating Speed: 3000 RPM
  • Maximum Kinematic Viscosity: 7500 SUS
  • Minimum Kinematic Viscosity: 50 SUS
  • Weight: 17 kg (Max), 37 lb (Max)
  • Media: Liquid, Liquids
  • Mounting Option: SAE, ISO, DIN
  • Port Connection: SAE, ISO, NPT, BSPP, ODT
  • Port Type: Flange, Straight Threaded
  • Port Location: Side Ports, Rear Ports
  • Pump Type: Gear, Fixed
  • Direction of Rotation: Clockwise, Counterclockwise, Bi-Rotational
  • Shaft Type: SAE, ISO, DIN, Industry Specific
  • Thru-Drive Capability: No

Key Benefits

  • Three-piece cast iron construction for distribution flexibility
  • Cast Iron construction for durability
  • Balanced Thrust Plates minimize friction and leakage
  • Roller bearings for durability
  • Multiple sections available

Examples of Suitable Applications

  • Tire Trucks
  • Salt and sand spreaders
  • Aerial Lift

Let's Talk

Let WIT experts answer your questions or get you started with a quote for your project.