CBG CBGZ Hydraulic Gear Pump | CBGZ2040 2050 2063 2080 2100-BFP | High Pressure Loader Pump

LIC Hydraulic’s CBG and CBGZ Series medium-high pressure external gear pumps are high-performance power units engineered specifically for heavy-duty construction machinery. Covering displacements from CBGZ2040 to 2100, this series features a rugged cast iron construction designed to withstand the harsh environments of loaders and bulldozers. We offer 100% Drop-in Interchangeability for all standard mounting configurations, including BFP (Side-In/Rear-Out) and BLP (Side-In/Side-Out). Every pump is subjected to 100% simulated load testing to guarantee peak volumetric efficiency and structural integrity under maximum operational pressures.

Technical Specifications (Bulleted List)

• Series Model: CBG / CBGZ (Axial Clearance Compensation)

• Target Models: CBGZ2040, 2050, 2063, 2080, 2100

• Displacement Range: 40 cm³/rev to 100 cm³/rev

• Nominal Pressure: 20 MPa (200 bar / 2900 PSI)

• Peak Pressure: 25 MPa (250 bar / 3625 PSI)

• Rated Speed: 2000 RPM to 2500 RPM

• Drive Shaft: Rectangular Spline, Involute Spline, or Straight Keyed

• Mounting Flange: Standard Rectangular or SAE Flange

• Control Type: Fixed Displacement

• Body Material: High-tensile Ductile Iron (QT500)

Key Technical Advantages

• Floating Axial Clearance Compensation: Utilizes pressure-balanced floating bushings that automatically adjust the end-face clearance of the gears. This keeps volumetric efficiency above 95% even at high pressures, minimizing internal heat generation.

• High-Capacity Needle Bearings: Equipped with precision needle bearings, these pumps offer superior radial load support and shock resistance compared to standard bushings, extending life in dusty and high-vibration conditions.

• Heavy-Duty Cast Iron Housing: The QT500 ductile iron body provides exceptional fatigue strength, effectively preventing housing cracks or deformation during high-pressure pulsations common in earthmoving tasks.

• Precision-Ground Gear Set: Gears are manufactured from high-strength alloy steel through precision hobbing, heat treatment, and grinding. This reduces operational noise and ensures steady flow output under heavy loads.

Application Areas

• Earthmoving Equipment: Main hydraulic pumps or steering pumps for 3-ton to 8-ton wheel loaders.

• Road Machinery: Hydraulic systems for tandem rollers, graders, and pavers.

• Special Vehicles: Steering power systems for mining trucks and auxiliary circuits for mobile cranes.

Expert Maintenance Tips

• Port Configuration Verification: Ensure the suffix code matches your system. BFP denotes Side-In/Rear-Out; BLP denotes Side-In/Side-Out. Incorrect porting will lead to installation failure.

• Pre-Start Lubrication: Always fill the pump with hydraulic fluid through the inlet before initial startup or after long storage. Never start the pump dry, as this will lead to immediate bushing galling.

• Fluid Cleanliness Standards: Heavy-duty pumps are sensitive to hard particulates. Maintain a system filtration level of ISO 4406 20/18/15 or better to prevent internal scoring and premature wear.

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