CBN-F310-CFLP Gear Pump 10cc 20MPa 3000rpm

Product Overview

The CBN-F310-CFLP, CBN-E310, CBN-E304, CBN-F306, CBN-G308, and CBN-E312 are aluminum external gear pumps from the CBN series, one of the most widely used hydraulic power element platforms in the Chinese hydraulic industry.

The CBN series offers three pressure grades: E-grade (16 MPa) , F-grade (20 MPa) , and G-grade (25 MPa) , with displacements ranging from 4 to 25 mL/r. The CBN-G series reaches 25 MPa (up to 30 MPa peak), addressing the pressure limitations of earlier CBN-E/F series pumps.

Engineered with precision-ground gears, high-strength aluminum alloy housing, floating bushings, and DU bearings, the pump delivers compact structure, light weight, high efficiency, low noise, and reliable operation. Widely used in automotive, construction machinery, lifting & transport equipment, mining machinery, light industrial machinery, and agricultural machinery hydraulic systems.

Every unit is manufactured to original equipment specifications, ensuring 100% drop-in interchangeability with genuine CBN series pumps without any system modifications. Each pump undergoes rigorous 100% simulated duty-cycle testing to validate pressure-flow-efficiency performance curves.

Technical Specifications 

CBN Series General Specifications

• Brand Series: CBN Series Gear Pump

• Product Type: Fixed Displacement External Gear Pump

• Design Standard: JB/T 7041

• Housing Material: High-strength aluminum alloy

• Bearings: Floating bushings with DU bearings

• Rated Speed: 2,000 r/min (small displacements) / 1,500 r/min (large displacements)

• Maximum Speed: 3,000 r/min (small displacements) / 2,000 r/min (large displacements)

• Volumetric Efficiency: ≥91% – 95%

• Rotation Direction: Clockwise / Counterclockwise available

Model-Specific Specifications

CBN-E304

• Displacement: 4 mL/r

• Rated Pressure: 16 MPa (E-grade)

• Maximum Pressure: 20 MPa

• Rated Speed: 2,000 r/min, Max Speed: 3,000 r/min

• Volumetric Efficiency: ≥91%

• Inlet/Outlet Ports: 14 mm / 10 mm

CBN-E310

• Displacement: 10 mL/r

• Rated Pressure: 16 MPa (E-grade)

• Maximum Pressure: 20 MPa

• Rated Speed: 2,000 r/min, Max Speed: 3,000 r/min

• Volumetric Efficiency: ≥95%

• Inlet/Outlet Ports: 18 mm / 14 mm

CBN-F306

• Displacement: 6.3 mL/r

• Rated Pressure: 20 MPa (F-grade)

• Maximum Pressure: 25 MPa

• Rated Speed: 2,000 r/min, Max Speed: 3,000 r/min

• Volumetric Efficiency: ≥93%

• Inlet/Outlet Ports: 14 mm / 10 mm

CBN-F310-CFLP

• Displacement: 10 mL/r

• Rated Pressure: 20 MPa (F-grade)

• Maximum Pressure: 25 MPa

• Rated Speed: 2,000 r/min, Max Speed: 3,000 r/min

• Volumetric Efficiency: ≥95%

• Input Power (@rated): 9.6 kW

• Inlet/Outlet Ports: 18 mm / 14 mm

CBN-G308

• Displacement: 8 mL/r

• Rated Pressure: 25 MPa (G-grade)

• Maximum Pressure: 30 MPa

• Rated Speed: 2,000 r/min, Max Speed: 3,000 r/min

• Volumetric Efficiency: ≥93%

• Inlet/Outlet Ports: 14 mm / 14 mm

CBN-E312

• Displacement: 12.5 mL/r

• Rated Pressure: 16 MPa (E-grade)

• Maximum Pressure: 20 MPa

• Rated Speed: 2,000 r/min, Max Speed: 3,000 r/min

• Volumetric Efficiency: ≥95%

• Inlet/Outlet Ports: 18 mm / 14 mm

Key Technical Advantages

1. Three Pressure Grades – Flexible Selection

The CBN series offers E (16 MPa), F (20 MPa), and G (25 MPa) three pressure grades. The CBN-G series reaches 25 MPa (up to 30 MPa peak), addressing the pressure limitations of earlier CBN-E/F series pumps. One platform for diverse application requirements.

2. Axial Clearance Compensation & Floating Bushings – High Volumetric Efficiency

Floating bushings with axial clearance automatic compensation automatically adjust gear end clearance under high pressure, significantly reducing internal leakage. Paired with DU bearings, bearing load capacity and wear resistance are significantly enhanced. Volumetric efficiency reaches 91% – 95%.

3. High-Strength Aluminum Alloy Housing – Lightweight Design

The high-strength aluminum alloy housing delivers lightweight construction with excellent heat dissipation. The CBN series is significantly lighter than cast iron equivalents—ideal for weight-sensitive mobile hydraulic equipment.

4. Broad Speed Range

Small displacement models (4–16 mL/r) support 2,000 – 3,000 r/min, while larger models (18–25 mL/r) support 1,500 – 2,000 r/min. Stable flow characteristics from low-speed precision control to high-speed continuous duty.

5. 100% Drop-In Interchangeability

Strictly complies with JB/T 7041 standards with identical mounting dimensions, flange interfaces, and shaft configurations to genuine CBN series pumps. Delivers 100% drop-in interchangeability with zero system modifications.

6. 100% Simulated Duty-Cycle Testing

Every pump is 100% tested on dedicated hydraulic test benches under simulated real-world operating conditions—validating pressure-flow characteristics and efficiency curves at rated pressure and full speed range—ensuring zero-defect, plug-and-play performance upon installation.

Application Areas

• Construction Equipment: Loaders, excavators, bulldozer hydraulic systems

• Agricultural Machinery: Tractors, combine harvesters, implement hitch hydraulic systems

• Lifting & Transport Machinery: Forklifts, lift platforms, crane hydraulic systems

• Mining Machinery: Mining equipment hydraulic systems

• Light Industry Machinery: Industrial equipment hydraulic systems

• Automotive Industry: Vehicle-mounted auxiliary hydraulic systems

Expert Maintenance Tips

1. Fluid Cleanliness Control

Maintain system fluid cleanliness to ISO 4406 19/17/14 or better. Install a 10–25 μm absolute filtration filter upstream of the inlet port to prevent particle contamination from damaging precision gear pairs and DU bearings.

2. Inlet Line Requirements

Keep suction lines short and straight with adequate diameter—not less than the port size. Recommended suction line flow velocity: ≤1.5 m/s to prevent cavitation from excessive inlet resistance. Inlet pressure must be maintained between 0.8–2.0 bar (absolute) .

3. Coupling Alignment Precision

Ensure pump shaft-to-drive shaft coaxiality deviation ≤0.05 mm and angular deviation ≤0.5° during installation. Flexible couplings are strongly recommended. If the drive involves sprockets or V-belt pulleys, an independent outboard bearing MUST be installed to protect the pump shaft.

4. First-Start Priming Procedure

Before initial startup, prime the pump by bleeding air through the drain port or a loosened outlet fitting. Perform 2–3 jog starts with the outlet open (no load) until oil fills the pump cavity without air bubbles, then connect the load circuit for full operation.

5. Pressure Grade Matching

CBN series E/F/G pressure grades correspond to different operating pressures. Confirm that system working pressure matches the pump’s pressure rating—never exceed rated pressure.

6. Rotation Direction Confirmation

CBN series supports both right-hand (clockwise) and left-hand (counterclockwise) rotation configurations. Always verify that the drive motor/engine rotation matches the pump before installation.