CBG2 External Gear Pump
4 day ago
Product details
CBG2 External Gear Pump
1. Product Overview
The CBG2 series external gear pump is a high-pressure heavy-duty hydraulic gear pump widely used in engineering machinery hydraulic system. This hydraulic gear pump adopts high-strength cast iron front and rear covers and aluminum alloy casing, equipped with precision nitrided gear pairs, DU composite sliding bearings and floating side plate automatic axial clearance compensation structure. With compact overall structure and excellent pressure resistance, this pump can maintain high volumetric efficiency under continuous heavy-load working conditions. It is commonly used as the main working pump for loaders, road rollers, garbage compactors, agricultural harvesters and various stationary hydraulic power units. The installation dimensions comply with industry standard specifications, which can directly replace the original OEM pumps without modifying pipelines.
Model Code Explanation
CBG represents high-pressure gear pump series; figure 2 stands for reinforced pressure-resistant structure design.
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 compensation, radial hydraulic balance, DU bushing
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
Volumetric Efficiency ≥92%
Displacement Options 16ml/r to 63ml/r available
3. Working Principle
Driven by the input shaft, a pair of external meshing gears rotates synchronously. Negative pressure is formed in the suction chamber to draw hydraulic oil from the oil tank. The gear teeth trap the oil and transport it to the pressure outlet, providing stable flow for all branches of the hydraulic system. The floating side plates automatically compensate the axial clearance caused by gear wear during long-term operation, effectively reducing internal leakage and keeping the hydraulic gear pump working efficiently for a long time.
4. Core Advantages
1. Reinforced heavy-duty structure, outstanding pressure resistance suitable for harsh working conditions.
2. Floating side plate design minimizes internal leakage, stable pressure output after thousands of working hours.
3. DU self-lubricating bearings reduce friction and improve anti-vibration performance.
4. Optimized gear tooth profile ensures low noise and small flow pulsation.
5. Excellent contamination resistance, adapting to dusty construction and farm sites.
6. Standard interchangeable installation size, plug-and-play replacement for maintenance.
7. Robust structure with low failure rate, easy disassembly and repair.
5. Application Range
This hydraulic gear pump is extensively applied in the hydraulic system of wheel loaders, road rollers, sanitation trucks, agricultural machinery, forklifts and hydraulic stations, serving as the main oil supply pump for working circuits.
6. Common Faults & Replacement Suggestion
Replace the complete pump assembly if these problems occur: insufficient system pressure, slow movement of hydraulic actuators, oil leakage at shaft seals and joint surfaces, abnormal grinding noise inside the pump body.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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4 year
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