CBW-F304 CBW-F306 CBW-F310 CBW-F316 Hydraulic Gear Pump | High Pressure Aluminum External Gear Oil Pump Replacement

Genlu Hydraulic proudly introduces our industrial and mobile-grade CBW-F Series (comprehensively covering 304, 306, 310, and 316 cc/rev baseline displacements) high-pressure aluminum-alloy external gear oil pumps. This series is fully engineered as a seamless, high-value, drop-in replacement for global technical standards, adapting flawlessly to replace complex configurations including CBW-F306-CFP, CBW-F304-ALP, CBW-F310, and CBW-F316-ALP. The functional suffix nomenclature reflects its superb adaptability: A/C indicates fluid port joining configuration (flange or thread split connections), L/F determines mounting flange layout (SAE standard rhombic 2-bolt or industrial 4-bolt rectangular matrices), and P defines standard parallel keyed or splined drive shaft styles.

Serving as the fluid power heart of hydraulic systems, these external gear pumps utilize a high-tensile extruded aluminum-alloy chassis paired with a 3-piece floating bush block matrix for precise axial pressure balance compensation. Genlu guarantees 100% Drop-in Interchangeability across standard mounting flange tolerances, shaft dimensions, fluid port centerlines, and fastener thread configurations compared to original equipment manufacturer units. Every single CBW-F gear pump assembly undergoes rigorous 100% automated inspection testing under full continuous load simulation on our digital multi-megawatt benches to certify elite volumetric efficiency bounds and durable lifecycle ratings under demanding thermal and high-pressure operational profiles.

Technical Specifications

• Product Series: CBW-F Series High-Pressure High-Tensile Aluminum External Hydraulic Gear Pump

• Core Model Target Identifiers: CBW-F304, CBW-F306, CBW-F310, CBW-F316 (With custom ALP/AFP/CLP/CFP structural suffixes)

• Geometric Displacement Profiles:

  • CBW-F304 Block: $4.0 \text{ ml/r}$

  • CBW-F306 Block: $6.0 \text{ ml/r}$

  • CBW-F310 Block: $10.0 \text{ ml/r}$

  • CBW-F316 Block: $16.0 \text{ ml/r}$

• Nominal Operating Pressure Rating: 20.0 MPa (200 bar / 2900 psi)

• Peak Transient Intermittent Pressure: 25.0 MPa (250 bar / 3625 psi) (Engineered to absorb sudden destructive load shocks)

• Operational Speed Matrix: $600 \text{ rpm}$ up to $3000 \text{ rpm}$ (Supports broad-frequency prime mover synchronization)

• Drive Actuation Modality: Direct mechanical shaft coupling (Parallel keyway, straight spline, SAE involute spline, or tandem rear-stacking piggyback setups available)

• Mounting and Shaft Formats:

  • L/F Code: Standard SAE 2-bolt diamond configuration or industrial 4-bolt rectangular layout

  • P Code: Parallel straight key, rectangular straight spline, or standard SAE involute spline drive

• Gross Volumetric Efficiency: $\ge 93\%$ under nominal full-load testing parameters

• Approximate Unit Weight: $2.5 \text{ kg} – 4.2 \text{ kg}$ (High power-density lightweight packaging)

Key Technical Advantages:

• Aerospace-Grade Extruded Aluminum Alloy Chassis: The outer pump frame is forged from high-density extruded aluminum alloy, providing yield strength and fatigue-expansion limits far superior to standard cast iron or re-melted cast aluminum. Even under continuous 20.0 MPa pressures, structural barrel flexing is eliminated, preserving ultra-tight tolerances between the gear tips and the inner housing to minimize radial fluid bypass.

• Axial-Clearance Compensation via Floating Bushing Blocks: The internal drive gears rotate within durable, low-friction DU composite bearings integrated directly into floating bushing blocks. Under hydraulic circuit backpressure, specialized backing seals force the plates firmly against the gear faces. This design ensures automatic axial clearance wear-compensation, holding volumetric efficiency above 93% throughout the pump’s service life.

• Advanced SPM Gear Profile Modification: The drive and driven gear sets are precision-manufactured using advanced computer-controlled Special Profile Modification (SPM) gear-shaving and grinding equipment. Achieving micro-inch surface smoothness eliminates trapped oil volume squeeze blocks, drastically cutting acoustic decibels and high-frequency fluid pulsations during heavy-duty operations.

• High-Pressure Dual-Lip Shaft Seal Protection: The front output shaft is fitted with a premium high-pressure resilient dual-lip oil shaft seal assembly (rated to withstand internal transient pressures exceeding 0.5 MPa) to prevent external weeping and stop air ingress. An internal internal drain gallery channels excessive oil pressure back to the suction side, protecting the shaft seal from backpressure-induced failure.

Application Areas:

• Compact Mobile Elevators & Logistics Warehouse Equipment: Lift pumps for electric warehouse forklifts, auxiliary steering systems for electric pallet jacks, and lift cylinders for vehicle hydraulic tail gates.

• Agricultural Mechanization & Vocational Fleet Implement Circuits: Rear three-point hitch lift assemblies for compact utility tractors, side-broom lift controllers for municipal sweepers, and power-steering assist links for agricultural harvesters.

• Compact Industrial Power Packs & Machine Tool Clamping Blocks: Fluid power supplies for CNC automatic hydraulic chucks, pilot circuit supplies for industrial balers, and non-standard custom micro hydraulic power units.

Expert Maintenance Tips:

• Never Subject a Newly Installed Unit to Dry Startup Cycles (Anti-Scuffing Protocol): Gear pumps rely entirely on the system fluid to create a running lubricant film. After final plumbing is secured but before turning on the motor, fill the pump housing via the intake port with clean, filtered hydraulic oil and rotate the shaft several times by hand. Starting the unit bone-dry will cause immediate thermal galling between the gear faces and the floating bushing blocks, ruining the pump within seconds.

• Maintain Rigid Alignment Limits; Avoid Direct Radial or Axial Shaft Loads: The internal DU bearings of the CBW-F series are strictly intended to support gear rotation. The pump must be joined to the prime mover via an authorized flexible coupling, with concentricity tolerances kept tighter than $\le 0.05 \text{ mm}$. Never mount a drive pulley, chain sprocket, or drive gear directly onto the pump output shaft, as overhung radial loads will cause asymmetric bearing wear and tear up the inner housing wall.

• Enforce Strict Suction Line Integrity to Bar Micro-Cavitation Pitting: Aluminum external gear pumps are sensitive to high vacuum thresholds at the intake. Ensure the intake plumbing uses a spacious fluid diameter and remains absolutely airtight. If an old intake hose collapses or a suction filter clogs, the resulting excessive vacuum will breed micro-vapor bubbles (cavitation). As these bubbles implode under high pressure, they pit the aluminum internal walls, leading to rapid internal leakage and pump failure.