CBF-F6 External Gear Pump

CBF-F6 External Gear Pump

 

1. Product Overview

 

The CBF-F6 series external gear pump is a high-pressure fixed displacement hydraulic gear pump originally designed by Hefei Changyuan Hydraulics (HCHC). It serves as the core power unit for mobile machinery hydraulic system. This pump features high-strength aluminum alloy housing, precision carburized nitrided gear pairs, DU self-lubricating bearings and floating side plate axial clearance compensation structure. The suffix F6 stands for 20MPa pressure grade and flange port connection design. With high volumetric efficiency, low noise, excellent anti-vibration and anti-contamination performance, it can operate continuously under heavy-duty cyclic working conditions. This series includes multiple displacement options from 50cc to 100cc, widely used as main hydraulic supply pump for forklifts, wheel loaders, road rollers, sanitation vehicles, agricultural machinery and stationary hydraulic power units. The mounting dimensions fully comply with industry standard specifications for direct OEM replacement without pipeline modification.

 

Model Code Explanation

 

CBF: High pressure external gear pump series; F = rated pressure 20MPa; 6 represents gear module and flange port configuration.

 

2. Main Technical Parameters

 

Item Specification 

Pump Type External meshing hydraulic gear pump 

Rated Working Pressure 20 MPa 

Maximum Intermittent Peak Pressure 25 MPa 

Rotational Speed Range 600 ~ 3000 rpm 

Internal Structure Floating side plate axial compensation, radial hydraulic balance, DU composite bearing 

Standard Seals NBR nitrile rubber; FKM high temperature resistant seals optional 

Applicable Hydraulic Fluid ISO VG46, VG68 anti-wear hydraulic oil 

Operating Temperature Range -20℃ ~ +90℃ 

Mounting Form Standard diamond flange (A type flange) 

Port Connection Flange mounted oil ports 

Volumetric Efficiency ≥92% 

Available Displacement 50, 63, 71, 80, 90, 100 mL/r 

Unit Weight 6.5kg ~ 7.5kg according to different displacement 

 

3. Working Principle

 

Driven by the input shaft, two meshing spur gears rotate synchronously inside the pump housing. Partial vacuum is generated in the suction chamber to draw hydraulic oil from the reservoir. Oil is trapped between gear teeth and transported to the pressure outlet, delivering stable continuous flow to all branches of the hydraulic system. The floating side plates automatically compensate the axial clearance caused by gear wear during long-hour operation, minimizing internal leakage and maintaining stable high efficiency for long-term continuous running.

 

4. Core Advantages

 

1. Lightweight high-strength aluminum alloy body, compact structure for limited installation space.

2. Floating side plate design keeps volumetric efficiency stable even after thousands of working hours.

3. DU self-lubricating bearings greatly enhance anti-vibration performance suitable for construction sites.

4. Optimized gear tooth profile realizes low noise and small flow pulsation during operation.

5. Excellent contamination resistance, adapted to dusty, harsh outdoor working environments.

6. Flange type oil ports reduce vibration and external oil leakage effectively.

7. Standard interchangeable installation dimensions, plug-and-play replacement for equipment overhaul.

8. Simple construction structure, low failure rate and convenient field maintenance.

 

5. Application Range

 

This hydraulic gear pump is extensively applied in the hydraulic system of industrial forklifts, small wheel loaders, road rollers, garbage trucks, agricultural harvesters and hydraulic stations, acting as the main oil supply pump for working circuits and auxiliary steering circuits.

 

6. Common Faults & Replacement Suggestion

 

Replace the complete pump assembly if these problems occur: insufficient system pressure, slow hydraulic cylinder movement, oil leakage at shaft seal and mating surface, abnormal grinding noise inside pump body.