PGP517 Hydraulic Gear Pump | Parker PGP PGM 300 315 500 Replacement | Genlu Hydraulic

Genlu Hydraulic specializes in manufacturing premier, fixed-displacement external gear pumps and motors tailored for heavy-duty industrial and mobile applications. The PGP517 Series High-Pressure Hydraulic Gear Pump is engineered as a highly precise, rugged, and 100% drop-in interchangeable replacement for the global industry benchmark Parker Hannifin PGP/PGM 500, 300, and 315 series aluminum external gear pumps.

We strictly execute exact physical envelopes, mounting patterns, shaft orientations, and porting geometry matching original OEM technical sheets. Built to withstand punishing transient shocks and sustained pressure profiles, every single configuration, including the specific PGP517A0380ST1D7NL3L2B1B1 assembly, undergoes strict 100% Full-Simulation Condition Testing prior to final packing. This operational audit thoroughly monitors volumetric performance, thermal characteristics, and radial seal capability under full continuous ratings up to 250 bar. Genlu delivers seamless mechanical interchangeability, minimized maintenance overhead, and maximum value for B2B global procurement.

Technical Specifications

• Product Series: PGP517 Platform (Fully cross-compatible with PGP300 / PGP315 / PGP500 / PGP511 / PGP517 configurations)

• Exact Designated Part Number: PGP517A0380ST1D7NL3L2B1B1

• Displacement Segment: 38.0 $cc/rev$ (2.32 $cu. in./rev$)

• Continuous Operating Pressure: 250 bar (25.0 MPa / 3625 psi)

• Intermittent Peak Pressure: 275 bar (27.5 MPa / 3988 psi)

• Maximum Continuous Rotational Speed: 3400 rpm

• Minimum Rotational Operational Speed: 500 rpm (at maximum outlet pressure parameters)

• Maximum Rated Input Power: Approx. 55 kW

• Drive Shaft Specification: Tapered 1:8 shaft with parallel flat key, M14x1.5 threaded end (Code T1)

• Mounting Flange Profile: Standard SAE “B” 2-bolt pilot flange layout (Code H3 matching 106.4 – Ø82.55 dimensional envelope)

• Fluid Porting Setup: Straight thread O-ring ports or heavy-duty split flanges (Code D7 indicating 1 5/8″-12 UN standard high-pressure ports)

• Direction of Rotation: Clockwise (CW, looking from the front shaft end extension)

• Sealing Elements Matrix: Premium Nitrile (NBR) as standard configuration; Fluorocarbon (FPM/FKM) available for severe fluid environments

• Section Configuration: Single Unit design (supports multi-section tandem/multiple layout build-ups via custom modular extension with common inlets)

• Approximate Unit Weight: 8.2 kg (18.1 lbs)

Key Technical Advantages:

• High-Strength Three-Piece Aluminum Architecture: Built utilizing high-density, aerospace-grade extruded aluminum alloy pumping sections sandwiched between rugged cast iron or treated aluminum endplates. This engineering design optimizes thermal heat dissipation during high-pressure cycles while maintaining superior power-density limits and lowering physical weight vectors.

• Advanced Hydrodynamic Journal Bushings: Utilizes premium dual-metal composite friction-reducing sliding sleeve bushings instead of conventional rolling elements. Combined with internal precision-engineered lubrication bypass grooves, the system channels micro-quantities of pressurized fluid to create a robust hydrodynamic oil film across the journals, lowering radial wear by over 40% under max loads.

• Pressure-Balanced Floating Thrust Blocks: Features dynamic, axis-compensated floating side thrust plates. By introducing calibrated back-pressure matrices behind the blocks, the face clearances seal down to the micron scale against the gear flanks. This structural advantage guarantees volumetric efficiencies exceeding 95% across the entire 250 bar continuous processing window.

• Micro-Profile Ground Gear Topology: The heavy-duty hardened steel alloy gear sets are profile-ground to strict tolerances. An advanced multi-tooth geometry reduces trapping volume traps during gear meshing. This significantly lowers flow pulsation and fluid-borne noise, ensuring quiet and steady rotation even up to 3400 rpm.

Application Areas:

• Construction & Mobile Lifting Implements: Primary and auxiliary pump drives on micro-excavators, truck-mounted cranes, aerial work platforms (AWPs), and skid-steer loader attachments.

• Advanced Agricultural & Forestry Rigs: Reel speed control and header lifts for combine harvesters, tractor rear three-point hitch systems, and high-flow hydraulic log loaders.

• Industrial Power Packages & Material Handling: Main hydraulic supply for heavy-duty forklifts, automated warehouse dock levelers, and compact industrial Hydraulic Power Units (HPUs).

Expert Maintenance Tips:

• Strict Alphanumeric Suffix Verification: Parker’s designation format for the PGP517 series contains multiple critical variations (e.g., PGP517A0380ST1D7...). Even a one-digit mismatch can mean a different shaft taper or an incompatible thread type. Always double-check your existing fitting types with Genlu engineers before replacing your unit to ensure a proper match.

• Mandatory Hydraulic Reservoir Scouring: If you are replacing a pump that failed due to mechanical failure or internal scoring, you must completely drain and scrub the hydraulic reservoir and replace all system filters. Any metallic debris left in the lines will instantly migrate into the new pump, ruining the precision floating thrust plates within the first few minutes of operation.

• Pre-Lubrication & Low-Speed Commissioning Protocol: Prior to final mechanical engagement, manually pre-fill the gear pump casing with fresh, filtered hydraulic fluid via the suction port and rotate the drive shaft 2-3 turns by hand. Upon prime startup, run the circuit un-loaded at low idle (800-1000 rpm) for 3-5 minutes to bleed trapped air pockets completely before subjecting the assembly to full pressure loads.