CBGJB2032 High Pressure Gear Pump CBGJ Series

Product Overview

The CBGJB2032 (and related models CBGJB2040, CBGJB2045, CBGJB2050, CBGJ3180, CBGJ3200, CBGJ3220, CBGJA2040) is a high-pressure cast iron external gear oil pump from the CBGJ series. Designed for construction machinery, it features a high-strength cast iron housing and precision gears, delivering high volumetric efficiency (≥92%), impact resistance and long service life. Rated pressure is typically 20–25 MPa (up to 25–31.5 MPa maximum). Available in single or multiple configurations, the pump offers direct bolt-on interchangeability with OEM units and undergoes 100% simulated duty testing for reliable performance in loaders, excavators and other heavy equipment.

Technical Specifications 

• Models: CBGJB2032 / CBGJB2040 / CBGJB2045 / CBGJB2050 / CBGJ3180 / CBGJ3200 / CBGJ3220 / CBGJA2040
• Pump type: High-pressure external gear pump (cast iron housing)
• Displacement examples:
  • CBGJB2032: 32 ml/r
  • CBGJB2040: 40 ml/r
  • CBGJB2050: 50 ml/r
  • CBGJ3180: Approx. 180 ml/r
  • CBGJ3200: Approx. 200 ml/r
  • CBGJ3220: Approx. 220 ml/r
• Rated pressure: 20–25 MPa (slightly lower for larger displacements, e.g. 16–20 MPa)
• Maximum pressure: 25–31.5 MPa (depending on model)
• Rated speed: Approx. 2000–2200 r/min
• Maximum speed: Approx. 2500–2800 r/min
• Volumetric efficiency: ≥92%
• Overall efficiency: ≥83%
• Weight examples: Medium displacements approx. 11–15 kg; large displacements (CBGJ3 series) approx. 36–42 kg
• Other: Square/oval flange options; rectangular or involute spline shafts; side inlet/outlet ports

Key Technical Advantages

1. True drop-in interchangeability: Manufactured to OEM dimensional and porting standards for bolt-on replacement without modifications.
2. High-strength cast iron construction: Housing provides excellent impact and high-pressure resistance for severe construction machinery duty.
3. High volumetric efficiency and low leakage: Precision gears and compensation design achieve ≥92% efficiency for stable long-term output.
4. Wide displacement range and multi-section flexibility: From 32 ml/r to 220 ml/r, supporting dual or triple pump configurations.
5. 100% simulated duty testing: Full pressure, flow, noise and endurance verification before shipment ensures ready-to-install reliability.

Application Areas

• Loaders and excavators (main or auxiliary pumps)
• Road rollers and bulldozers
• Cranes and material handling equipment
• Mining machinery and construction vehicles
• Open-circuit systems requiring high-pressure cast iron gear pumps

Expert Maintenance Tips

• Confirm rotation direction and flange/port compatibility before installation; use recommended hydraulic oil and maintain proper cleanliness.
• Start at low speed unloaded; check for leaks and noise. Observe shaft load limits on multi-section units.
• Regularly inspect seals and bearings; ensure unrestricted suction lines to prevent cavitation.
• Keep oil temperature and viscosity within recommended ranges; avoid over-pressure operation.
• For special flange or spline codes, verify the complete order code and consult technical support.