CBW Series Hydraulic Gear Pump | CBW-F304 CBW-F306 CBW-F310 | High Pressure Gear Pump

The CBW Series external gear pumps by Chengyuan Hydraulic are high-efficiency power units specifically engineered for medium-to-high pressure applications. This range covers displacements from F304 to F316, including versatile configurations like CBW-F304-CFP, CBW-F306-CFP, and CBW-F304-ALP. Built with high-strength aluminum alloy bodies and floating bushing structures, the CBW series maintains stable pressure output across diverse and harsh environments. As a premier industrial solution, every unit offers 100% original-place interchangeability and undergoes 100% simulated condition testing to guarantee that volumetric efficiency and pressure compensation meet the highest industry benchmarks.

Technical Specifications :

• Core Models: CBW-F304, CBW-F306, CBW-F310, CBW-F316, CBW-F320

• Displacement Range: $4\text{ cc/rev}$ to $20\text{ cc/rev}$

• Rated Pressure: $20\text{ MPa (200 bar / 2900 psi)}$

• Peak Pressure: $25\text{ MPa (250 bar / 3625 psi)}$

• Speed Range: $600\text{–}3000\text{ rpm}$

• Mounting (Example): C (Rectangular flange), A (Rhombic flange)

• Shaft Type (Example): F (Spline), P (Parallel Key), L (Tang/Flat end)

• Porting: P (Side ports), Rear ports available

• Volumetric Efficiency: $\ge 95\%$

Key Technical Advantages:

• High-Strength Aluminum Alloy Housing: The pump body is crafted from aerospace-grade aluminum alloy via a precision extrusion process. This material offers exceptional density, significantly reducing overall weight while maintaining structural integrity at 25MPa peak pressures.

• Axial Clearance Floating Compensation: Utilizing floating side plates, the design uses discharge pressure to automatically optimize the clearance between the bushings and gear faces. This mechanism ensures minimal internal leakage and peak efficiency despite temperature or pressure fluctuations.

• Precision-Matched Gear Sets: Gears are made from premium alloy steel with induction hardening and micro-grinding. This high-level tooth accuracy ensures smooth meshing, resulting in minimal pressure ripple and mechanical vibration for stable low-speed operation.

• Durable DU Composite Bearings: Equipped with heavy-duty DU self-lubricating bearings, the pump exhibits strong contamination resistance and high radial load capacity. This protects the journals even under instantaneous extreme conditions, extending the service life.

Application Areas:

• Material Handling: Main pumps for electric forklifts and steering circuits for lift systems.

• Sanitation Machinery: Auxiliary hydraulic systems for garbage compactors and street sweepers.

• Agricultural Equipment: Tractor suspension systems and harvester hydraulic drives.

Expert Maintenance Tips:

• Inlet Vacuum Control: Maintain the suction vacuum below $0.02\text{ MPa}$. Clean the suction filter regularly to prevent cavitation, which causes “honeycomb” erosion within the pump housing.

• Temperature Management: The ideal operating temperature is 40°C–60°C. Excessive heat thins the oil film leading to premature wear, while excessive cold increases suction resistance.

• Initial Priming: Upon the first installation, jog the motor to prime the pump. If a high-pitched whine persists, bleed the air from the outlet fitting until a steady flow of oil is achieved.