Product Overview
The CBN-F304, CBN-F306, CBN-F310, CBN-F314, and CBN-F316 are core models of the CBN-F300 Series high-pressure external gear pumps, representing the F pressure rating (rated pressure 20MPa) within the series.
The CBN-F300 series gear pump is a power component in hydraulic systems. Featuring high-precision gears, high-strength aluminum alloy housing, floating bushings, and DU bushings, the pump delivers simple construction, light weight, high efficiency, low noise, and reliable operation. The CBN-F series pressure rating is F (rated pressure 20MPa, maximum pressure 25MPa).
The gear module is m=3. The series offers displacements from 4 to 25 ml/r (CBN-F304 through CBN-F325). CBN-F304 offers 4 ml/r, CBN-F306 offers 6.3 ml/r, CBN-F310 offers 10 ml/r, CBN-F314 offers 14 ml/r, and CBN-F316 offers 16 ml/r.
The CBN-F300 series is widely used in hydraulic systems for automobiles, construction machinery, lifting and transport machinery, mining machinery, light industrial machinery, and agricultural machinery.
Engineered as a direct OEM-replacement solution for CBN-F300 series original products, these models fully comply with CBN-F300 series original design standards and mounting interface specifications, offering 100% direct interchangeability with OEM pumps. Every unit undergoes 100% workload simulation testing prior to shipment, rigorously validating pressure retention, volumetric efficiency, and internal leakage performance to meet or exceed OEM standards.
Model Code Breakdown (Bulleted List) :
CBN — Series: CBN Series Gear Pump
F — Pressure rating: F = 20MPa rated (E = 16MPa)
300 — Series: CBN-F300 Series
304 / 306 / 310 / 314 / 316 — Displacement code: 4 / 6.3 / 10 / 14 / 16 ml/r nominal displacement
Technical Specifications
CBN-F300 Series General Specifications
Series: CBN-F300 High-Pressure External Gear Pump
Pressure Rating: F (20MPa rated pressure)
Gear Module: m=3
Rated Speed: 2000 r/min
Maximum Speed: 3000 r/min
Housing Material: High-strength aluminum alloy
Bearing Type: Floating bushings / DU bushings
Mounting Type: Diamond flange / Rectangular flange / Special flange (optional)
Port Type: Flange connection / Threaded connection (optional)
Shaft Type: Plain key / Rectangular spline / Woodruff key / Flat end key (optional)
Rotation Direction: Left-hand / Right-hand (optional, right-hand is omitted)
CBN-F304 Specifications
Model: CBN-F304
Nominal Displacement: 4 ml/r
Rated Pressure: 20 MPa
Maximum Pressure: 25 MPa
Rated Speed: 2000 r/min
Maximum Speed: 3000 r/min
Volumetric Efficiency: ≥ 91%
Inlet Port Diameter: 14 mm
Outlet Port Diameter: 10 mm
Input Power: 2.65 – 3.8 kW
CBN-F306 Specifications
Model: CBN-F306
Nominal Displacement: 6.3 ml/r
Rated Pressure: 20 MPa
Maximum Pressure: 25 MPa
Rated Speed: 2000 r/min
Maximum Speed: 3000 r/min
Volumetric Efficiency: ≥ 93%
Inlet Port Diameter: 14 mm
Outlet Port Diameter: 10 mm
CBN-F310 Specifications
Model: CBN-F310
Nominal Displacement: 10 ml/r
Rated Pressure: 20 MPa
Maximum Pressure: 25 MPa
Rated Speed: 2000 r/min
Maximum Speed: 3000 r/min
Volumetric Efficiency: ≥ 95%
Inlet Port Diameter: 18 mm
Outlet Port Diameter: 14 mm
Input Power: 9.6 kW
CBN-F314 Specifications
Model: CBN-F314
Nominal Displacement: 14 ml/r
Rated Pressure: 20 MPa
Maximum Pressure: 25 MPa
Rated Speed: 2000 r/min
Maximum Speed: 3000 r/min
Volumetric Efficiency: ≥ 95%
Inlet Port Diameter: 18 mm
Outlet Port Diameter: 14 mm
Input Power: 12.5 kW
CBN-F316 Specifications
Model: CBN-F316
Nominal Displacement: 16 ml/r
Rated Pressure: 20 MPa
Maximum Pressure: 25 MPa
Rated Speed: 2000 r/min
Maximum Speed: 3000 r/min
Volumetric Efficiency: ≥ 95%
Inlet Port Diameter: 18 mm
Outlet Port Diameter: 14 mm
Input Power: 15 kW
Key Technical Advantages
1. F-Rated High-Pressure Capability – 20MPa Rated Pressure
The CBN-F300 series features F pressure rating with 20MPa rated pressure and 25MPa maximum pressure. Compared to the E-rated (16MPa) products, the F series delivers higher pressure capacity for demanding hydraulic applications.
2. High-Precision Gears with High-Strength Aluminum Housing
High-precision gears and high-strength aluminum alloy housing deliver lightweight construction without compromising structural integrity. The aluminum housing provides excellent heat dissipation, reducing operating temperatures.
3. Floating Bushings & DU Bushings – Long Life & High Reliability
Floating bushings and DU bushings effectively reduce friction and wear, significantly extending pump service life. DU bushings provide excellent self-lubrication and wear resistance, ensuring long-term reliability under high-pressure conditions.
4. High Efficiency & Low-Noise Operation
The CBN-F300 series features compact structure, light weight, high efficiency, low noise, and reliable operation. Volumetric efficiency reaches 91% – 95%, delivering high efficiency while maintaining low noise levels.
5. Wide Displacement Coverage & Flexible Configuration Options
The CBN-F300 series offers displacements from 4 to 25 ml/r (CBN-F304 through CBN-F325). CBN-F304, CBN-F306, CBN-F310, CBN-F314, and CBN-F316 cover the typical range from small to large displacements. Multiple mounting types, port types, shaft types, and rotation directions are available.
6. Wide Speed Range – Compatible with Various Prime Movers
Rated speed of 2000 r/min with maximum speed of 3000 r/min. Accommodates various prime mover conditions from low-speed electric motors to high-speed diesel engines.
7. 100% Factory Tested & Direct Interchangeability
Every unit undergoes 100% workload simulation testing prior to shipment, covering pressure retention verification, internal leakage detection, and flow validation. Fully compliant with CBN-F300 series original design standards, with flange dimensions, shaft specifications, and mounting interfaces identical to OEM pumps—direct drop-in replacement with zero modifications required.
Application Areas
The CBN-F300 series gear pumps are widely used in the hydraulic systems of the following equipment:
Construction Machinery: Excavators, loaders, bulldozers, and other mobile machinery
Automobiles: Hydraulic systems for various vehicles
Lifting & Transport Machinery: Cranes, lift platforms
Mining Machinery: Mining equipment, crushing equipment
Agricultural Machinery: Tractors, combine harvesters
Light Industrial Machinery: Hydraulic systems for various light industrial equipment
Expert Maintenance Tips
1. Model Confirmation
CBN-F304 offers 4 ml/r, CBN-F306 offers 6.3 ml/r, CBN-F310 offers 10 ml/r, CBN-F314 offers 14 ml/r, and CBN-F316 offers 16 ml/r. Before installation, confirm the correct displacement based on system flow requirements and verify the complete model code on the pump nameplate. Distinguish between E-rated (16MPa) and F-rated (20MPa) products.
2. Rotation Direction Confirmation
The CBN-F300 series supports both left-hand (counter-clockwise) and right-hand (clockwise) rotation, with right-hand typically omitted from the designation. Before installation, always verify that the PTO rotation direction of the host machine matches the pump’s rotation direction—incorrect rotation will result in pump failure to prime and may cause severe damage to gears and bearings within a short period.
3. Installation Precautions
Thoroughly clean the mounting flange and shaft mating surfaces before installation to ensure no debris remains
Mounting types available: Diamond flange, rectangular flange, or special flange
Port types available: Flange connection or threaded connection
Use specified torque values for mounting bolts—avoid over-tightening which may cause distortion of the aluminum housing
Ensure correct connection of inlet and outlet ports—the inlet line must have no restrictions or sharp bends
4. First Start-Up and Bleeding
Before first start-up, must fill the pump with hydraulic oil through the inlet port—never start dry
After start-up, run at low speed with no load for 2–3 minutes to ensure complete air evacuation from the system
Check for abnormal noise or leakage—aluminum housing pumps are particularly sensitive to cavitation
5. Fluid and Filtration
Use high-quality anti-wear hydraulic oil compliant with standards
Maintain system oil cleanliness to ISO 4406 18/15 or better
Maintain operating temperature within recommended range
Regularly replace return line filters to prevent contaminants from entering the pump
6. Periodic Maintenance
Check mounting bolt torque every 1,000 operating hours
Regularly monitor system operating pressure—CBN-F series not to exceed 20MPa rated pressure (25MPa peak)
Regularly inspect shaft seals to prevent leakage
If flow output decreases, noise levels increase abnormally, or system temperature rises excessively, inspect and replace worn components promptly
