CBV External Gear Pump
1. Product Overview
The CBV series external gear pump is a compact medium-pressure hydraulic gear pump, specially developed for general mobile machinery and light industrial hydraulic system. With lightweight aluminum alloy pump casing and precision gear assemblies, this unit features small overall size, low weight and stable flow output. It is widely used as a pressure oil supply component for forklifts, sanitation vehicles, agricultural machinery, small loader equipment and stationary hydraulic power units. Thanks to standardized installation dimensions, this pump can directly replace most conventional gear pumps for easy aftermarket replacement.
Model Code Explanation
CBV represents compact lightweight external gear pump series, designed for medium pressure working conditions with compact layout requirements.
2. Main Technical Parameters
Item Specification
Pump Type External meshing hydraulic gear pump
Rated Working Pressure 16 MPa
Intermittent Peak Pressure 21 MPa
Rotational Speed 600 ~ 3000 rpm
Internal Structure Floating side plate automatic clearance compensation structure
Standard Seals HNBR nitrile rubber; FKM high temperature seals optional
Suitable Hydraulic Oil ISO VG46, VG68 anti-wear hydraulic fluid
Operating Temperature -20℃ ~ +90℃
Mounting Type Standard diamond flange
Volumetric Efficiency ≥90%
3. Working Principle
As the drive shaft drives the meshing gear pair to rotate, negative pressure is generated in the suction chamber, drawing hydraulic oil from the tank. The gear teeth carry the oil to the pressure outlet side and build up system pressure for the hydraulic system. The floating side plate automatically compensates the axial clearance caused by gear surface wear, minimizing internal leakage and keeping the hydraulic gear pump at high efficiency during long continuous operation.
4. Core Advantages
1. Lightweight aluminum alloy housing, small volume, easy installation in limited space.
2. Floating side plate design effectively reduces internal leakage and maintains stable pressure output.
3. Optimized gear tooth profile ensures low noise and low flow pulsation during operation.
4. Good contamination resistance, adapts well to outdoor dusty working environments.
5. Standard flange and oil port arrangement, plug-and-play replacement without pipeline modification.
6. Simple structure, low failure rate and convenient maintenance.
5. Application Range
This hydraulic gear pump is commonly applied in the hydraulic system of small forklifts, road sweepers, lawn mowers, harvesters, mini loaders and small hydraulic power stations, providing stable power for working and auxiliary circuits.
6. Common Faults & Replacement Suggestion
Replace the whole pump assembly when the following problems occur: insufficient system pressure, slow movement of hydraulic actuators, oil leakage at shaft seal and mating surface, abnormal grinding noise inside pump body.
