PGP505A0040CA1H2NE5E3B1B1 Parker Gear Pump | 4cc 275 bar

Product Overview

The PGP505A0040CA1H2NE5E3B1B1 (Parker Part No. 3319111386) is a fixed-displacement aluminum external gear pump from the Parker Hannifin PGP500 series. This model belongs to the PGP505 frame size with a displacement of 4 cc/rev, continuous operating pressure up to 275 bar (3,988 psi) , and maximum speed of 4,000 rpm.

The PGP500 series is Parker’s high-performance upgrade to the internationally recognized “bushing block” gear pump technology, available in four frame sizes (PGP502, PGP505, PGP511, PGP517) with displacements ranging from 0.8 to 70 cc/rev. The PGP505 series is a medium-frame model with displacements from 2 to 15 cc/rev, featuring a 13-tooth gear design with pressure balanced thrust blocks and journal bushings for high efficiency and low-noise operation at high working pressures.

The PGP505A0040CA1H2NE5E3B1B1 features three-piece aluminum construction and supports clockwise, counter-clockwise, or bi-rotational configurations. This model features an SAE-A 2-bolt flange (pilot diameter 82.55 mm), an SAE-A splined shaft (16/32 pitch), and side ports.

Engineered as a direct OEM-replacement solution for Parker original products, this model fully complies with Parker original design standards and SAE mounting interface specifications, offering 100% direct interchangeability. Every unit undergoes 100% workload simulation testing prior to shipment, rigorously validating pressure retention, volumetric efficiency, and internal leakage performance to meet or exceed OEM standards.

Model Code Breakdown :

• PGP — Series: Parker External Gear Pump

• 505 — Frame size: PGP505 medium-frame, displacement 2–15 cc/rev, 13-tooth gear

• A — Housing type: A = Standard

• 0040 — Displacement code: 4 cc/rev

• C — Shaft configuration code

• A — Rotation direction: A = Clockwise

• 1H2 — Flange and mounting configuration code

• NE5 — Seal and shaft configuration code

• E3 — Port specification code

• B1B1 — Configuration suffix code

Technical Specifications

• Model: PGP505A0040CA1H2NE5E3B1B1

• Parker Part No.: 3319111386

• Series: Parker PGP500 Aluminum Gear Pump

• Frame Size: PGP505 (medium-frame)

• Theoretical Displacement: 4 cc/rev

• Continuous Operating Pressure: 275 bar (3,988 psi)

• Peak Pressure: 300 – 310 bar (transient)

• Maximum Speed: 4,000 rpm

• Speed Range: 500 – 4,000 rpm

• Rotation Direction: Clockwise (viewed from shaft end)

• Mounting Flange: SAE-A 2-bolt flange

• Flange Pilot Diameter: 82.55 mm

• Shaft Type: SAE-A splined shaft, 16/32 pitch

• Port Location: Side Ports

• Seals: NBR

• Compatible Fluids: Standard hydraulic fluids, phosphate-ester, water-glycol

• Maximum Fluid Temperature: 80℃

• Minimum Fluid Temperature: -15℃

• Viscosity Range: 50 – 7,500 SUS

• Weight: Approx. 2.8 – 4.0 kg

• Housing Material: High-strength aluminum

• Gear Teeth: 13-tooth gear profile

Key Technical Advantages

1. 13-Tooth Optimized Gear Design – Extremely Low Noise
The PGP505 features a 13-tooth gear profile, delivering significantly lower noise levels compared to conventional gear pumps. Optimized gear tooth profiles and flow metering provide reduced pressure pulsation and exceptionally quiet operation. Noise levels are as low as ≤65 dB(A) , 3–5 dB(A) lower than comparable products.

2. Pressure Balanced Thrust Plates + Journal Bushings – High Efficiency & Long Life
Pressure balanced thrust blocks and journal bushings ensure maximum efficiency across all operating conditions. Pressure balanced thrust plates maintain high efficiency; journal bushings provide long service life and superior shock load resistance. Volumetric efficiency reaches ≥92% with total efficiency ≥85%.

3. Superior High-Pressure Capability
Continuous operating pressure reaches 275 bar (3,988 psi) with peak pressures of 300–310 bar. High-strength aluminum housing and large shaft diameters reduce bearing loads for long-term stability under high-pressure conditions.

4. Three-Piece Aluminum Construction – Lightweight & High Strength
Three-piece construction with high-strength aluminum housing delivers lightweight design (just 2.8–4.0 kg) without compromising structural integrity. Aluminum construction provides excellent heat dissipation.

5. Flexible Configuration & Multi-Section Support
The PGP505 series supports single, tandem, and multiple pump configurations. A wide range of mounting options (SAE, ISO, DIN) and shaft types are available. Optional integrated valves include pressure relief, anti-cavitation, cross port relief, solenoid unloading, proportional relief, and reversing.

6. 100% Factory Tested & Direct Interchangeability
Every unit undergoes 100% workload simulation testing prior to shipment, covering pressure retention verification, internal leakage detection, and flow validation. Fully compliant with Parker original design standards, with flange dimensions, shaft specifications, and mounting interfaces identical to OEM pumps—direct drop-in replacement with zero modifications required.

Application Areas

The PGP505A0040CA1H2NE5E3B1B1 gear pump is widely used in the following equipment and systems:

• Aerial Equipment: Aerial lifts

• Agricultural Machinery: Tractors, combine harvesters

• Construction Equipment: Loaders, excavators

• Forestry Equipment: Brush chippers, trenchers

• Material Handling Equipment: Forklifts, lift platforms

• Vocational & Municipal Equipment: Street sweepers, municipal service vehicles

• Industrial Hydraulic Power Units: HPU systems

• Mobile Hydraulic Systems: Power steering pumps (with priority valves), brake pumps, lube pumps

Expert Maintenance Tips

1. Model Confirmation
PGP505A0040CA1H2NE5E3B1B1 offers 4 cc/rev displacement with Parker Part No. 3319111386. The PGP505 series offers displacements from 2–13 cc/rev. Before installation, confirm the correct displacement based on system flow requirements and verify the complete model code on the pump nameplate.

2. Rotation Direction Confirmation
This model features clockwise rotation (viewed from shaft end). Before installation, always verify that the PTO rotation direction of the host machine matches the pump’s rotation direction—incorrect rotation will result in pump failure to prime and may cause severe damage to gears and bearings within a short period.

3. Installation Precautions

• Thoroughly clean the SAE-A 2-bolt flange (pilot diameter 82.55 mm) and SAE-A splined shaft (16/32 pitch) mating surfaces

• Use Parker-specified torque values for mounting bolts (20±3 N·m)

• Ensure correct connection of inlet, outlet, and drain ports

• Direct drive with flexible coupling is recommended—avoid subjecting the pump to axial or radial loads

• Maintain inlet pressure at 0.8 – 2 bar absolute

4. First Start-Up and Bleeding

• Before first start-up, must fill the pump with hydraulic oil through the inlet port—never start dry

• After start-up, run at low speed with no load for 2–3 minutes to ensure complete air evacuation from the system

• Check for abnormal noise or leakage—aluminum housing pumps are particularly sensitive to cavitation

5. Fluid and Filtration

• Use high-quality anti-wear hydraulic oil compliant with DIN 51524 standards

• Maintain operating temperature within -15℃ to 80℃

• Maintain viscosity within 50 – 7,500 SUS range

• Maintain system oil cleanliness to ISO 4406 18/15 or better

• Recommended filtration: ≤25 μm; 10 μm high-precision filters recommended

6. Periodic Maintenance

• Check mounting bolt torque every 1,000 operating hours

• Regularly monitor system operating pressure—not to exceed 275 bar rated pressure (300–310 bar peak)

• Regularly inspect shaft seals to prevent leakage

• If flow output decreases, noise levels increase abnormally, or system temperature rises excessively, inspect and replace worn components promptly