CBQTF Dual External Gear Pump
2 week ago
Product details
CBQTF Dual External Gear Pump
1. Product Overview
CBQTF series is a compact tandem dual external gear pump, designed as a key power component for mobile machinery hydraulic system. This integrated hydraulic gear pump combines two pump units in one compact housing with a common input shaft. It can supply two separate hydraulic flow outputs simultaneously, one for the main working circuit and another for pilot control, steering and lubrication circuits. With optimized overall dimensions, this pump saves installation space compared with two separate single pumps. It is widely used in forklifts, compact loaders, sanitation trucks, agricultural machinery and various stationary hydraulic power units, and serves as an ideal aftermarket replacement for original equipment pumps.
Model Code Explanation
- CBQT: Basic series of low-noise tandem gear pump
- F: F pressure grade (rated pressure 20MPa), flange port configuration
2. Main Technical Parameters
Item Specification
Pump Type Tandem dual external meshing hydraulic gear pump
Rated Working Pressure 20MPa
Max Intermittent Peak Pressure 25MPa
Rotational Speed Range 600 ~ 3000 rpm
Internal Structure Floating side plate automatic clearance compensation, full radial balance structure
Standard Seals HNBR nitrile rubber; FKM high temperature resistant seals optional
Suitable Hydraulic Fluid ISO VG46, VG68 anti-wear hydraulic oil
Operating Temperature -20℃ ~ +90℃
Mounting Type Standard diamond flange mounting
Volumetric Efficiency ≥91%
3. Working Principle
Driven by a common input shaft, two sets of gear pairs rotate synchronously. Vacuum is generated in the suction chamber, drawing hydraulic oil from the reservoir. The gears transport oil to the pressure outlets separately, providing two independent pressure oil flows for different branches of the hydraulic system. The floating side plate automatically compensates for gear face wear during long-term operation, minimizing internal leakage and maintaining stable efficiency of the hydraulic gear pump.
4. Core Advantages
1. Compact integrated structure, greatly simplifies pipeline arrangement and reduces installation space.
2. Floating side plate design ensures low internal leakage and stable performance during continuous operation.
3. Optimized gear profile realizes low noise and low flow pulsation.
4. Good contamination resistance, perfectly adapts to dusty working sites of construction and agricultural machines.
5. Standard flange and oil port layout, fully interchangeable with original pumps for direct replacement without modification.
6. Stable pressure output, effectively solves problems such as slow action and heavy steering.
5. Application Range
This dual gear pump is widely applied in the hydraulic system of internal combustion forklifts, mini wheel loaders, road sweepers, garbage trucks, harvesters and small hydraulic power stations, providing oil supply for main working circuit and auxiliary control circuit at the same time.
6. Common Faults & Replacement Advice
Replace the complete pump assembly when symptoms occur: insufficient system pressure, slow cylinder movement, oil leakage on shaft seal and joint surface, abnormal grinding noise inside the pump body, cross leakage between two pump sections.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
4 year
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