GPC4-32-2E1F3 High Pressure Double Gear Pump

Product Overview

The GPC4-32-2E1F3-G5-20-F-L (and related models such as GPC4-63/50/40/32/25/20/80-1E2F1-30L) is a high-pressure double (multistage) external gear pump from the GPC4 series. Featuring a high-strength aluminum alloy housing, axial flexible compensation and radial hydraulic balance, it delivers high volumetric efficiency, high pressure capability and long service life. Rated pressure reaches up to 25 MPa and supports dual to quadruple configurations. The pump offers direct bolt-on interchangeability with OEM units and undergoes 100% simulated duty testing for reliable performance in construction, mobile and lifting machinery hydraulic systems.

Technical Specifications 

• Models: GPC4-32-2E1F3-G5-20-F-L / GPC4-63/50/40/32/25/20/80-1E2F1-30L (GPC4 series double/multistage)
• Pump type: High-pressure external gear pump (double or multiple configurations)
• Theoretical displacement examples (single stage):
  • 20: 21.0 ml/r
  • 25: 26.2 ml/r
  • 32: 32.8 ml/r
  • 40: 42.0 ml/r
  • 50: 52.5 ml/r
  • 63: 65.6 ml/r
  • 80: 78.7 ml/r
• Rated pressure: 25 MPa (smaller sizes); 20–23 MPa (medium); 18 MPa (largest)
• Rated speed: 2300–3300 r/min
• Minimum speed: 600–900 r/min
• Volumetric efficiency: ≥90%
• Weight (single stage examples): Approx. 3.2–5.65 kg (double/multiple units additive)
• Rotation: L = Counter-clockwise; R = Clockwise available
• Other: Aluminum alloy housing; SAE or Chinese standard flanges/shafts; dual, triple or quadruple combinations supported

Key Technical Advantages

1. True drop-in interchangeability: Manufactured to OEM dimensional and porting standards for bolt-on replacement without modifications.
2. Axial flexible compensation and radial hydraulic balance: Effectively minimizes internal leakage and maintains high volumetric efficiency with stable output.
3. High-strength lightweight design: Aluminum alloy housing provides high pressure capability with low weight for mobile installations.
4. Flexible double/multistage configurations: Can be assembled as dual to quadruple pumps to meet complex multi-circuit system requirements.
5. 100% simulated duty testing: Full pressure, flow, noise and endurance verification before shipment ensures ready-to-install reliability.

Application Areas

• Construction machinery (loaders, excavators, etc.) multi-circuit hydraulic systems
• Mobile and lifting/transport equipment
• Dump trucks and crane main + auxiliary pump combinations
• Open-circuit systems requiring double high-pressure gear pumps
• Industrial hydraulic power units

Expert Maintenance Tips

• Confirm counter-clockwise rotation (L) and flange/shaft compatibility before installation; use recommended hydraulic oil and maintain cleanliness (filtration ≤25 μm).
• Start at low speed unloaded; check for leaks and noise. Observe load distribution and shaft load limits on double/multistage units.
• Regularly inspect seals and bearings; ensure unrestricted suction lines to prevent cavitation.
• Keep oil temperature within –20 to +80 °C; recommended viscosity 20–43 mm²/s.
• For special multistage codes, verify the complete order code and consult technical support.