CBN Series Hydraulic Gear Pump | CBN-F310 CBN-F314 CBN-E314 | Agricultural High-Pressure Pump

The CBN Series axial-compensated high-pressure gear pumps from Chengyuan Hydraulic are high-performance power units developed for modern agricultural machinery and light industrial equipment. This series (including E and F design levels) features precision-engineered gear sets and a robust three-piece construction. For core models like CBN-F310 and CBN-F304CFPR, we have specifically optimized self-priming capabilities at high speeds. Every CBN pump undergoes 100% simulated full-load condition testing to ensure stable flow, low noise, and extended service life, guaranteeing 100% original-place interchangeability for leading agricultural brands.

Technical Specifications :

• Series Model: CBN Series (E/F Design Levels)

• Displacements (ml/r): 4, 6, 8, 10, 12, 14, 16

• Rated Pressure: 20 MPa (200 bar)

• Max Pressure: 25 MPa (250 bar)

• Rated Speed: 2000 – 2500 rpm

• Max Speed: 3000 rpm

• Shaft Types: A (Straight Keyed), B (Spline), H (Rectangular Spline)

• Mounting: Square Flange / Rhombic Flange (Agricultural Standard)

• Volumetric Efficiency: ≥ 93% (under rated conditions)

Key Technical Advantages:

• Floating Bushing Axial Compensation: Utilizes advanced floating bushing technology that uses internal hydraulic pressure to automatically adjust gear end clearances. This ensures high volumetric efficiency even under high temperatures and continuous pressure, significantly reducing internal leakage.

• High-Strength Extruded Aluminum Housing: The pump body is manufactured from high-strength aluminum alloy using a specialized extrusion process, providing exceptional resistance to pressure and deformation even under 25 MPa peak spikes.

• Optimized DU Bearings & Side Plates: High-performance DU bushings enhance shaft load capacity while reducing frictional heat and mechanical noise, extending the pump’s continuous operational window.

• Versatile Porting Configurations: The CBN series supports multiple inlet/outlet arrangements (e.g., side-in/side-out, rear-in/side-out), facilitating easy installation in the cramped compartments of harvesters, tractors, and loaders.

Application Areas:

• Agricultural Machinery: Tractor hitch systems, harvester steering, and header lift controls.

• Construction Machinery: Small forklifts, road sweepers, and dump truck auxiliary circuits.

• Industrial Equipment: Compact hydraulic power units and lifting platforms.

Expert Maintenance Tips:

• Rotation Verification: CBN pumps are typically designated as Left-hand (L) or Right-hand (R). Always verify the rotation arrow on the pump cover against the drive source before installation; reverse rotation will destroy the shaft seal.

• Oil Cleanliness Control: Given the harsh agricultural environments, a suction filter with at least 20μm precision is recommended. Contaminated oil will quickly score the floating bushing faces, leading to pressure loss.

• Inlet Sealing & Cavitation Prevention: Ensure the suction line is perfectly sealed. Any air ingress will cause severe noise, vibration, and rapid pitting of the gear teeth due to cavitation.