CBN & CBF Series Hydraulic Gear Pump | CBN-F314 CBN-F320 CBN-F532 | CBF-E90G CBF-F3.2

The CBN and CBF Series gear pumps from Chengyuan Hydraulic are high-performance power components specifically designed for industrial hydraulic systems, construction machinery, and agricultural equipment. These pumps utilize a high-strength aluminum alloy housing, offering an exceptional power-to-weight ratio. The CBN series (e.g., CBN-F316, CBN-F320) features advanced floating axial clearance compensation, maintaining high volumetric efficiency across the entire pressure range. The CBF series is enhanced with reinforced bearing structures for superior stability under heavy-duty loads. Every pump from Chengyuan undergoes 100% simulated condition testing, ensuring pressure characteristics match OEM standards for 100% original-place interchangeability.

Technical Specifications :

• Core Model Series: CBN-F300, CBN-F500, CBF-E/F Series

• Displacement Range: 3.2 mL/r to 50 mL/r (e.g., CBN-F314 is 14mL/r, CBN-E550 is 50mL/r)

• Nominal Pressure (F Grade): 20 MPa (200 bar)

• Nominal Pressure (E Grade): 16 MPa (160 bar)

• Peak Pressure: Up to 25 MPa

• Rated Speed: 2000 – 2500 rpm

• Maximum Speed: 3000 rpm

• Drive Shaft Types: Splined shaft (Rectangular/Involute) or Keyed shaft

• Mounting Flange: Standard Diamond or Rectangular Flange

Key Technical Advantages:

• High-Strength Aluminum Alloy Body: The housing is crafted from premium aluminum alloy via precision extrusion. This reduces weight while providing extreme resistance to deformation under high pressure, preventing internal leakage.

• Automatic Axial Clearance Compensation: The floating bushing design uses hydraulic feedback to adjust the clearance between the bushing and the gear face. This technology maintains volumetric efficiency above 90% even after long-term wear.

• High-Performance DU Composite Bearings: Equipped with wear-resistant DU bearings that provide excellent support under high speeds and boundary lubrication conditions, significantly extending pump life and reducing noise.

• Advanced Sealing Structure: The shaft end features high-pressure, high-temperature skeleton oil seals. Combined with optimized unloading grooves, this effectively eliminates the “trapped oil” phenomenon and prevents leakage.

Application Areas:

• Agricultural Machinery: Tractor lift systems and harvester control circuits.

• Construction Equipment: Compact loaders, forklift auxiliary circuits, and dump truck hydraulics.

• Industrial Machinery: Hydraulic balers, shearing machines, and medium-to-small hydraulic power units.

Expert Maintenance Tips:

• Startup Air Bleeding: After installation, loosen the outlet fitting and “jog” the motor until oil flows steadily without bubbles. Never run the pump at high speed in a dry-friction state.

• Fluid Cleanliness: To protect precision gear surfaces and floating bushings, a return filter with a rating of at least 25μm must be installed. Replace oil immediately if it darkens or becomes emulsified.

• Avoiding Radial Loads: The shaft end is designed only for torque transmission. Never mount pulleys or gears directly onto the pump shaft, as radial forces will lead to premature bearing failure.