CBN Series Hydraulic Gear Pump | CBN-F304 F310 F320 F325 | CBN-E314 E316 Replacement

The CBN Series external gear pumps from Chengyuan Hydraulic are high-pressure power units specifically engineered for agricultural machinery, construction equipment, and industrial power packs. This series includes the CBN-F300 (Heavy-duty) and CBN-E300 (Standard) ranges. Featuring high-strength extruded aluminum housings and axial clearance automatic compensation technology, these pumps maintain exceptional volumetric efficiency even in harsh field conditions. Every CBN pump undergoes 100% simulated condition testing to ensure pressure and flow responses align perfectly with OEM standards, providing 100% original-place interchangeability.

Technical Specifications :

• Core Model Series: CBN-F300 / CBN-E300 Series

• Displacement Options: 4, 6, 10, 14, 16, 20, 25 mL/r

• Nominal Pressure: 20 MPa (200 bar)

• Peak Pressure: 25 MPa (250 bar)

• Rated Speed: 2000 – 2500 r/min

• Control Method: Fixed Displacement

• Mounting Flange: F (Rhombic Flange)

• Shaft Ends: H (Rectangular Spline) / P (Parallel Key)

• Rotation: R (Right/Clockwise) / L (Left/Counter-clockwise)

Key Technical Advantages:

• Extruded High-Tensile Aluminum Body: Crafted from aerospace-grade aluminum through a high-pressure extrusion process, the housing offers superior fatigue resistance. It maintains structural integrity under 25MPa pulsating pressure, preventing internal binding.

• Floating Bushing Pressure Compensation: Equipped with floating bushings that automatically adjust the gap between the bushing and the gear end-face using discharge pressure. This engineering feat ensures over 93% volumetric efficiency across the entire pressure range.

• Precision-Ground Gear Assemblies: Gears are made from premium alloy steel, precision-ground to micrometer tolerances. This significantly reduces operational noise and flow ripples, ensuring smoother actuator movement.

• DU Bearing Support: Features high-performance composite bearings with extreme load-carrying capacity. Combined with an optimized inlet channel, it effectively mitigates cavitation risks during high-speed operation.

Application Areas:

• Agricultural Machinery: Tractor hitch systems and harvester steering/lifting circuits.

• Compact Construction Equipment: Mini loaders, graders, and auxiliary hydraulic systems for dump trucks.

• Sanitation Equipment: Hydraulic power sources for garbage compactors and road sweepers.

Expert Maintenance Tips:

• Rotation Direction Verification: Before installing models like CBN-E314-FHR/L, verify that the rotation arrow on the pump housing matches the drive source. Incorrect rotation will cause immediate shaft seal failure.

• Inlet Port Integrity: CBN pumps are sensitive to cavitation. Ensure the suction line is airtight; air ingress will cause excessive noise and pitting on the gear surfaces.

• Initial Priming: Fill the suction port with clean hydraulic oil and manually rotate the shaft several times before the first startup to ensure the gear pairs are pre-lubricated.