CBN-F5 Series Gear Pump
The CBN-F5 Series is a mainstream domestic medium-high pressure external meshing aluminum alloy gear pump, widely used as the core power unit for hydraulic systems in construction machinery, agricultural machinery and dump trucks. Changyuan Hydraulic is the benchmark original manufacturer for this series, and the model standard is adopted by numerous domestic manufacturers.
1. Complete Model Code Definition (CBN-F5□□-BFPR)
Code Description
CBN Series code: External meshing gear pump with automatic axial clearance compensation
F Pressure class: Rated pressure 20MPa, peak pressure 25MPa
5 Gear module: Module 5 series for large displacement specifications
□□ Nominal displacement (mL/r): 20, 25, 32, 40, 50, 63
B Mounting form: Square flange mounting
F Port connection: Flange type oil ports
P Shaft extension: Parallel key shaft; H for rectangular spline shaft
R/L Rotation direction: R = clockwise (right-hand, default), L = counter-clockwise (left-hand)
2. Key Technical Specifications
Basic Performance
- Pump Type: Fixed displacement external meshing gear pump
- Rated Pressure: 20MPa; Max Working Pressure: 25MPa
- Rated Speed: 2000r/min; Max Speed: 2500r/min; Min Speed: 600r/min
- Volumetric Efficiency: ≥93%; Overall Efficiency: ≥85%
- Working Fluid: 46# anti-wear hydraulic oil, viscosity range 10~100mm²/s
- Operating Temperature: -20℃ ~ +80℃
- Standard Seal: Nitrile rubber (NBR); Optional FKM for high temperature & oil resistance
3. Structure & Core Advantages
1. Three-piece construction consisting of front cover, pump body and rear cover, modular design for easy disassembly and maintenance.
2. Floating axial clearance compensation with built-in floating bushings, which automatically compensates gear wear under high pressure to maintain stable volumetric efficiency during long-term operation.
3. Radial hydraulic balance with DU self-lubricating bushings, effectively reducing wear between gears and bushings, with a design service life of over 8000 hours.
4. High-strength aluminum alloy housing featuring light weight, excellent heat dissipation and strong vibration resistance, ideal for mobile vehicle-mounted equipment.
5. Low noise and small pressure pulsation for stable operation.
4. Typical Applications
Widely applied in hydraulic systems for mobile construction machinery:
- Dump trucks, loaders, mini excavators
- Road rollers, aerial work platforms, cranes
- Tractors, harvesters and other agricultural machinery
- Sanitation equipment, small mining hydraulic stations and light industrial hydraulic systems
5. Mounting & Port Configuration
- Mounting: Horizontal installation with square flange; both parallel key and spline drive shafts available.
- Ports: Larger inlet port than outlet port (flange connection) to reduce suction resistance and avoid cavitation.
- Rotation: Customizable left-hand or right-hand rotation to match different motor directions.
Product Overview
TheCBN-F5 Series Gear Pumpis a high-performance hydraulic power component featuring precision-engineered gears and a high-strength aluminum alloy housing. It offers a compact structure, lightweight design, high efficiency, low noise, and reliable operation. Widely used in hydraulic systems of construction machinery, agricultural equipment, industrial vehicles, mining machinery, and light industrial machinery, this series provides stable power support for various applications.
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Key Features
1. High-Strength Aluminum Alloy Housing
• Reduces pump weight and installation labor while enhancing vibration resistance and corrosion resistance.
• Manufactured using metal die-casting for superior structural integrity and sealing.
2. Precision Gear Design
• Involute tooth profile ensures smooth meshing, minimizing vibration and noise.
• Floating bushing structure automatically compensates for end-face clearance, improving volumetric efficiency and reducing internal leakage.
3. Low-Noise Operation
• Optimized gear modulus and tooth profile parameters reduce running noise, making it suitable for noise-sensitive applications.
4. High Reliability
• Integrated floating bushings with spiral and straight oil grooves enable low-pressure oil lubrication and cooling, extending service life.
• Seal rings prevent mixing of high-pressure oil with the suction chamber, ensuring stable pressure.
5. Versatile Adaptability
• Supports multiple shaft rotation directions, shaft extensions (flat key, spline), and port connections (flange, thread) to meet diverse installation requirements.
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Technical Specifications
• Model Range: CBN-E304, CBN-E306, CBN-E310, CBN-E312, CBN-E314, CBN-E316, CBN-E320, CBN-E325, etc.
• Rated Pressure: Up to20 MPa(varies by model; refer to product manual for details).
• Flow Range: Covers a wide spectrum to suit different operating conditions.
• Speed Range: Supports high-speed operation (up to3,000 rpmfor select models).
• Drive Power: Matched to pressure and flow requirements for optimal efficiency.
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Applications
1. Construction Machinery
• Hydraulic systems for excavators, loaders, and cranes, providing reliable power.
2. Agricultural Equipment
• Precision control in combines, tractors, and other farming machinery.
3. Industrial Vehicles
• Forklifts, stackers, and other material-handling equipment for enhanced productivity.
4. Mining Machinery
• Durable performance in crushers, conveyors, and harsh mining environments.
5. Light Industrial Machinery
• Precision hydraulic control in packaging machines, injection molding machines, etc.
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Selection & Ordering Guide
1. Define Requirements
• Determine required pressure, flow, and speed based on operating conditions.
• Confirm installation space and interface type (shaft rotation, extension, port connection).
2. Model Selection
• Refer to the product manual to choose the appropriate CBN-F5 model.
• Example:CBN-E316indicates a rated pressure of16 MPawith moderate flow, suitable for medium-sized equipment.
3. Ordering Instructions
• Specify shaft rotation direction, extension type, and port connection method.
• Provide application details and operating conditions for customized recommendations.
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Maintenance & Care
1. Regular Inspections
• Check for oil leaks and monitor noise/vibration levels for early issue detection.
2. Lubrication Management
• Use recommended hydraulic fluid and replace/filter it periodically.
• Ensure proper lubrication of floating bushings to prevent dry friction.
3. Component Replacement
• Replace seals and wear parts regularly to extend pump life.
• Avoid prolonged operation under high pressure or temperature to prevent component degradation.
