CBHLD-F5/F5 Dual External Gear Pump
2 week ago
Product details
CBHLD-F5/F5 Dual External Gear Pump
1. Product Overview
CBHLD-F5/F5 is a coaxial integrated dual Hydraulic gear pump specially optimized for heavy-load light construction machinery and large-tonnage forklift hydraulic system. It adopts a one-piece composite pump housing structure, built with two sets of independent external meshing gear assemblies and shares one drive shaft. The mark F5/F5 means both front and rear pump sections adopt F5 pressure grade with identical specification, rated pressure 20MPa, matched flange oil ports.
This dual pump outputs two isolated pressure oil circuits at the same time. Normally the large-displacement pump supplies oil for main lifting and tilting actuators, while the small-displacement pump provides stable flow for hydraulic steering, pilot control and lubrication auxiliary loops of the hydraulic system. Compared with two separate single pumps, it simplifies pipeline layout and reduces overall installation space, widely used as OEM and replacement spare parts for forklifts, mini loaders and sanitation vehicles.
Model Code Definition
- CBHL: General dual external gear pump series for industrial vehicles
- D: Reinforced thickened housing structure, enhanced shock resistance and overload resistance
- F5: Pressure grade code, rated pressure 20MPa, thickened modulus gear
- F5/F5: Dual pump front & rear cartridges are fully consistent in pressure grade and port connection form
2. Core Technical Parameters
Item Parameter
Product Type Tandem dual external meshing Hydraulic gear pump
Rated Pressure (Front & Rear Pump) 20MPa
Instant Peak Pressure 25MPa
Applicable Rotation Speed 600–3000rpm
Displacement Matching Multiple customizable combinations
Internal Structure Floating side plate axial clearance automatic compensation, radial hydraulic balance
Seal Configuration Standard HNBR nitrile rubber seals; FKM high-temperature resistant seals optional
Applicable Hydraulic Oil ISO VG46 / VG68 anti-wear hydraulic oil
Operating Temperature Range -20℃ ~ +90℃
Mounting Form Standard diamond flange direct installation
Volumetric Efficiency ≥92%
3. Working Principle
The power source drives the shared main shaft to rotate synchronously, and two groups of gear pairs rotate simultaneously to form negative pressure in their respective suction chambers, sucking hydraulic oil from the oil tank.
The two pump sections independently deliver pressurized hydraulic oil to two separated branches of the hydraulic system without cross oil leakage. The floating side plate compensation mechanism automatically fits the gear end face by system pressure to offset axial wear clearance, effectively reduce internal leakage, and keep the Hydraulic gear pump maintain high efficiency under long-time continuous operation. The integrated coaxial design cuts extra connecting parts and mechanical friction loss.
4. Main Product Advantages
1. D-type reinforced pump body with higher structural rigidity, stronger anti-vibration and anti-overload capacity, adapting to bumpy and dusty construction working environments.
2. Dual F5 equal-pressure design ensures consistent pressure stability of two circuits, convenient debugging and matching of main and auxiliary hydraulic loops.
3. Radial balance + floating side plate structure effectively slow efficiency attenuation after long service, avoid pressure drop of the whole hydraulic system.
4. Complete interchangeable mounting size, oil port position and shaft specifications with original matching pumps, plug-and-play without modifying pipelines.
5. Compact overall outline, multiple displacement combinations to meet different equipment hydraulic system matching demands.
5. Application Scenarios
1. Dual-circuit power source for 3–7 ton internal combustion forklift hydraulic system: main pump for fork lifting, auxiliary pump for hydraulic steering;
2. Hydraulic power assembly for mini wheel loaders, road sweepers and small dumper trucks;
3. Supporting hydraulic component for agricultural machinery and small mobile hydraulic power stations;
4. Old equipment renovation to replace scattered single pumps and simplify hydraulic piping layout.
6. Replacement Instruction
Replace the whole CBHLD-F5/F5 pump assembly if the equipment appears insufficient lifting power, heavy steering, cross oil leakage between two pump sections, continuous abnormal grinding noise, oil seepage at shaft seal and flange surface.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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4 year
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hydraulic motor,
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