CBT-F423-AFHL Gear Pump 23cc 20MPa 2500rpm

Product Overview

The CBT-F423-AFHL, CBT-F416-AF, CBT-F314-CLPR, CBT-F410-ALH4, CBT-F304, CBT-F306, CBT-F310, and CBT-F316 are aluminum high-pressure external gear pumps from the CBT-F4 series. Manufactured to JB/T 7041 standard, the F-grade pressure rating is 20 MPa continuous and 25 MPa peak. The gear module is m=4, with displacements covering 4 to 32 mL/r.

The CBT-F4 series features a high-strength aluminum alloy housing with advanced technologies including axial clearance compensation, radial balancing, and DU self-lubricating bearings. It delivers high volumetric efficiency, high pressure, low noise, excellent vibration resistance, and long service life. Widely used in forklifts, loaders, excavators, cranes, rollers, as well as mining, light industry, sanitation, and agricultural machinery.

Every unit is manufactured to original equipment specifications, ensuring 100% drop-in interchangeability with genuine CBT-F4 series pumps without any system modifications. Each pump undergoes rigorous 100% simulated duty-cycle testing to validate pressure-flow-efficiency performance curves.

Brand Disclaimer: This product is a high-quality compatible replacement engineered for full interchangeability with original equipment. All model codes are referenced solely to indicate compatibility and interchangeability. This product is manufactured by an independent producer.

Technical Specifications 

CBT-F4 Series General Specifications

• Brand Series: CBT-F4 Series High-Pressure Gear Pump

• Product Type: Fixed Displacement External Gear Pump

• Design Standard: JB/T 7041

• Pressure Grade: F (20 MPa rated, 25 MPa peak)

• Gear Module: m=4

• Housing Material: High-strength aluminum alloy

• Rated Speed: 2,500 r/min

• Maximum Speed: 3,000 r/min

• Minimum Speed: 600 – 800 r/min (varies by displacement)

• Volumetric Efficiency: ≥ 92% – 93%

• Mounting: A (Oval flange)

• Port Type: F (Flange connection) / L (Threaded connection)

• Shaft Type: P (Plain key) / H (Rectangular spline) / X (Involute spline) / Φ (SAE spline)

• Rotation: L (Left-hand / Counterclockwise) / R (Right-hand / Clockwise)

Model-Specific Specifications

CBT-F304

• Displacement: 4 mL/r

• Rated Pressure: 20 MPa, Peak Pressure: 25 MPa

• Rated Speed: 2,500 r/min, Max Speed: 3,000 r/min

• Min Speed: 600 – 800 r/min

• Volumetric Efficiency: ≥92%

• Weight: Approx. 2.9 kg

CBT-F306

• Displacement: 6 mL/r

• Rated Pressure: 20 MPa, Peak Pressure: 25 MPa

• Rated Speed: 2,500 r/min, Max Speed: 3,000 r/min

• Min Speed: 600 r/min

• Volumetric Efficiency: ≥92%

• Weight: Approx. 3.0 kg

CBT-F310

• Displacement: 10 mL/r

• Rated Pressure: 20 MPa, Peak Pressure: 25 MPa

• Rated Speed: 2,500 r/min, Max Speed: 3,000 r/min

• Min Speed: 800 r/min

• Volumetric Efficiency: ≥92%

• Weight: 3.1 kg

CBT-F314

• Displacement: 14 mL/r

• Rated Pressure: 20 MPa, Peak Pressure: 25 MPa

• Rated Speed: 2,500 r/min, Max Speed: 3,000 r/min

• Min Speed: 800 r/min

• Volumetric Efficiency: ≥92%

• Weight: 3.3 kg

CBT-F316

• Displacement: 16 mL/r

• Rated Pressure: 20 MPa, Peak Pressure: 25 MPa

• Rated Speed: 2,500 r/min, Max Speed: 3,000 r/min

• Min Speed: 800 r/min

• Volumetric Efficiency: ≥92%

• Weight: 3.4 kg

CBT-F410

• Displacement: 10 mL/r

• Rated Pressure: 20 MPa, Peak Pressure: 25 MPa

• Rated Speed: 2,500 r/min, Max Speed: 3,000 r/min

• Min Speed: 800 r/min

• Volumetric Efficiency: ≥92%

• Weight: 3.1 kg

• Note: CBT-F410 shares same displacement as CBT-F310 (10 mL/r), but differs in gear module (m=4 vs m=3) and mounting dimensions

CBT-F416

• Displacement: 16 mL/r

• Rated Pressure: 20 MPa, Peak Pressure: 25 MPa

• Rated Speed: 2,500 r/min, Max Speed: 3,000 r/min

• Min Speed: 800 r/min

• Volumetric Efficiency: ≥92%

• Weight: 3.4 kg

• Note: CBT-F416 shares same displacement as CBT-F316 (16 mL/r), but differs in gear module (m=4 vs m=3) and mounting dimensions

CBT-F423

• Displacement: 23 mL/r

• Rated Pressure: 20 MPa, Peak Pressure: 25 MPa

• Rated Speed: 2,500 r/min, Max Speed: 3,000 r/min

• Min Speed: 600 r/min

• Volumetric Efficiency: ≥93%

• Weight: 3.6 kg

Key Technical Advantages

1. Axial Clearance Compensation & Radial Balance – High Volumetric Efficiency

Internal axial clearance floating compensation and radial balancing mechanisms automatically adjust gear end clearance under high pressure, significantly reducing internal leakage. Volumetric efficiency reaches 92%–93%, maintaining stable flow output across the full pressure range.

2. High-Strength Aluminum Alloy Housing – Lightweight Design

The high-strength aluminum alloy housing delivers lightweight construction with excellent heat dissipation. CBT-F4 series pumps weigh only 2.9 – 3.7 kg, making them ideal for weight-sensitive mobile hydraulic equipment.

3. DU Self-Lubricating Bearings – Long Service Life

DU self-lubricating bearings significantly enhance bearing load capacity and wear resistance. Ensures long-term stable operation under high-pressure, high-speed conditions.

4. Multiple Interface Standards – 100% Drop-In Interchangeability

Available with flange (F) and threaded (L) port connections, and plain key (P), rectangular spline (H), involute spline (X), and SAE spline (Φ) shaft options. Delivers 100% drop-in interchangeability with genuine CBT-F4 series pumps.

5. Broad Speed Range

Supports a wide speed range of 600 to 3,000 r/min, maintaining high volumetric efficiency even at 600 r/min low speed. Stable flow characteristics from low-speed precision control to high-speed continuous duty.

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 (20 MPa), peak pressure (25 MPa), and full speed range—ensuring zero-defect, plug-and-play performance upon installation.

Application Areas

• Construction Equipment: Forklifts, loaders, excavators, cranes, rollers

• Agricultural Machinery: Tractors, combine harvesters

• Lifting & Transport Machinery: Lift platforms, material handling equipment

• Mining Machinery: Mining equipment hydraulic systems

• Light Industry & Sanitation: Light industrial equipment, sanitation vehicles

• Industrial Vehicles: Industrial handling vehicle 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. Rotation Direction Confirmation

“L” suffix indicates left-hand (counterclockwise) rotation; “R” indicates right-hand (clockwise) (R is typically omitted). Always verify that the drive motor/engine rotation matches the pump before installation.

6. Pressure Grade Matching

CBT-F4 series F-grade is rated at 20 MPa continuous and 25 MPa peak. Never exceed rated pressure to avoid pump and system damage.