Gear oil pump QX Series QX62-125/62-125/63-080R

二、Product Description

QX62-125/62-125/63-080R triple gear pump is a factory direct supply product from Hengmeisi China manufacturer, integral cast three-cavity coaxial structure, consisting of two QX62 series 125ml/r large displacement pump + one QX63 series 80ml/r medium displacement pump. Three independent oil chambers realize three-way separate oil supply, replace three discrete single pumps or two sets of tandem pumps effectively, reduce equipment assembly space and pipeline layout difficulty, flow fluctuation ≤1.6%, continuous rated working pressure 255bar for heavy-load continuous operation.

三、Product Advantages

1. Integral Triple-Cavity Coaxial Design vs Combined Assembled Multi-Pump

Different from split assembled three-pump combination, QX62-125/62-125/63-080R adopts one-piece casting pump housing, single driving shaft synchronously drives three groups of gear assemblies. Avoid multi-pump coupling alignment error, cut intermediate connecting fittings, reduce system leakage point and later maintenance cost greatly.

2. Three Completely Isolated Independent Hydraulic Circuits

Internal partition wall fully separates three pump chambers, three outlets can configure different pressure respectively. Two large-flow loops for main drive action, medium-flow loop for auxiliary control, satisfy complex equipment main movement + auxiliary + steering three-path oil supply requirement simultaneously.

3. Heavy Load Anti-Fatigue Custom Material Configuration

Drive gear & shaft: high-strength alloy steel, carburizing quenching + deep cryogenic stabilization treatment, anti-pressure fatigue under frequent impact load;Side plate: three-layer bimetallic wear-resistant composite, adapt medium contaminated hydraulic oil in mining site;Sealing component: high temperature fluororubber seal, stable sealing performance within -30~120℃ under 300bar peak pressure;Bearing: reinforced heavy-duty roller bearing, allow long-time continuous 2900r/min operation, design service life over 20000 hours.

4. Optional Separate Built-in Overflow Valve for Each Pump

Every pump cavity can be pre-installed independent relief valve optionally, no external valve block needed for each circuit, simplify three-loop hydraulic station pipeline layout and lower pipeline loss.

四、Model Code 

Model QX62-125/62-125/63-080R coding explanation:

QX62：Large displacement high pressure pump series; 125：Single pump displacement 125ml/r（front two pumps）

QX63：Medium displacement branch series; 080：Third pump displacement 80ml/r

/：Separate three independent pump modules; R：Clockwise right rotation, counter-clockwise L customizable as customer drawing.QX62-125/62-125/63-080R is core large-displacement triple pump of QX series, targeted for large tonnage machinery three-circuit matched system.

五、Product Structure 

1. Integral Three-Cavity Cast Housing Core Structure

Whole pump body one-time casting forming, three independent pump chambers arranged coaxially in series inside shell, exclusive structural feature different from single/dual gear pump.

2. Full Partition Isolation Internal Layout

Thick isolation baffle between every two pump bodies, three oil paths do not interpenetrate, independent pressure adjustment without mutual interference.

3. Graded Wear-Resistant Matching Parts

Front two large flow pumps equip thickened bimetallic side plate, third medium flow pump matches standard composite plate, graded configuration control cost while guarantee service life.

4. Unified Single-End Input Drive

One input shaft connects three gear sets at the same time, compact overall outline, convenient for large engine cabin limited space installation.

六、Application Scenarios 

Main matching industry of QX62-125/62-125/63-080R triple gear pump

1.Large Construction Machinery: 5ton+ wheel loader, large road roller, heavy-duty paver, big tonnage telescopic forklift

2.Mining Equipment: Underground large feeder, mining scraper, open-pit small mining truck

3.Heavy Industrial Equipment: Three-loop multi-station hydraulic press, large metallurgical auxiliary equipment

4.Super Large Agricultural Machinery: Big self-propelled combine harvester, multi-function heavy farm tractor

5.Special Engineering Vehicle: Large sanitation compression garbage truck, heavy aerial platform vehicle