CBHZ/CBHZG-F Series Gear Pump | CBHZ-F28.2-ALPR | High Pressure Aluminum Gear Oil Pump

LIC Hydraulic offers the CBHZ and CBHZG Series, high-performance aluminum gear pumps engineered for demanding mobile hydraulic applications. Models like the CBHZ-F28.2-ALPR feature a high-tensile extruded aluminum body combined with floating bush compensation technology. These pumps are designed to deliver stable flow and high pressure (up to 25 MPa) while maintaining a lightweight footprint. Widely used in forklift lift systems and agricultural machinery, our CBHZ series provides 100% interchangeability with original equipment, ensuring maximum uptime and efficiency.

Technical Specifications

• Displacement Options: 25.0, 26.5, 28.2, 31.5, 32, 36, 40 ml/r

• Rated Pressure: 20 MPa / 25 MPa (CBHZG reinforced version)

• Max Speed: 2500 – 3000 rpm

• Configuration (ALPR):

  • A: Diamond Flange

  • L: Splined or Parallel Keyed Shaft

  • P: Side or Rear Ports

  • R: Clockwise Rotation

• Body Material: High-strength aviation-grade Aluminum Alloy

• Efficiency: $\geq 93\%$ Volumetric Efficiency

Key Advantages

• Axial & Radial Compensation: Floating bushings automatically adjust clearances based on pressure, compensating for thermal expansion and mechanical wear to ensure consistent performance.

• Heavy-Duty DU Bearings: High-precision composite bushings offer excellent anti-seizure properties and durability under contaminated or high-temperature oil conditions.

• Optimized Gear Profile: Precision-ground gears with modified tooth profiles minimize flow ripple and operational noise, enhancing operator comfort.

• Lightweight & High Strength: The aluminum construction offers a superior power-to-weight ratio, reducing vehicle fuel consumption compared to traditional cast iron pumps.

Application Areas

• Material Handling: Main hydraulic pump for 1-5 ton forklifts (Lift/Tilt circuits).

• Construction Machinery: Auxiliary hydraulics for mini-excavators and skid steer loaders.

• Agriculture: Tractor 3-point hitch systems and harvester attachment drives.

• Specialty Vehicles: Refuse compactors and truck tail-lift power units.

Expert Maintenance Tips

• Filtration Control: Aluminum pumps are sensitive to abrasive particles. Maintain oil cleanliness at ISO 19/16 and replace hydraulic filters every 1000 operating hours.

• Avoid Pressure Spikes: Ensure the system relief valve is correctly set. Prolonged exposure to over-pressure can lead to housing deformation or internal leakage.

• Coupling Alignment: Ensure the shaft alignment error is within 0.05mm. Excessive radial or axial loads on the shaft will lead to premature seal failure and bearing wear.