Gear oil pump QX Series QX42-020/33-010R

Product Description

Hengmeisi Gear oil pump QX Series QX42-020/33-010R – Bucher replacement dual pump. 20cc & 10cc cores, compact housing, right-hand rotation. 295/355 bar. Two isolated circuits: 20cc main drive, 10cc fine compensation. Short tooth profile – ideal for compact auxiliary hydraulics.

Product Advantages

Stepwise Small & Micro Flow Matching Design

Different from equal-displacement twin pumps, the combination of 20cc and 10cc forms gradient flow layout. The 20cc core supplies steady basic flow for equipment routine action while 10cc micro core supplements tiny flow loss to stabilize system pressure, avoiding excessive oil overflow and energy waste common in single fixed-flow pumps.

Ultra-Compact Body Saves Installation Space

Integrated monolithic casting structure merges two different series pump cores into narrow pump casing. Compared with two separated single pumps, overall length and width shrink obviously, perfectly fitting embedded installation inside limited space of small automation machines and compact hydraulic power packs.

Low Starting Resistance for Intermittent Operation

Refined polished gear tooth surface cuts startup friction effectively. The pump realizes smooth startup under low ambient temperature and light load, adapting to frequent start-stop working mode of intermittent production equipment and avoiding stuck failure at cold startup.

Fine Particle Tolerance for Light-duty Oil Circuits

Optimized internal meshing clearance structure can tolerate fine floating impurities in low-viscosity hydraulic oil, matching working condition of small hydraulic stations with simple filtering setup and lowering later daily maintenance frequency.

Model Code

QX42-020/33-010R complies with standard BUCHER coding rules for quick parameter check:

QX42: QX42 small displacement series pump platform for medium-small flow output;

020: 20cm³/rev fixed displacement, used for main basic hydraulic driving loop;

QX33: QX33 micro specialized series designed for precision fine-tuning control;

010: 10cm³/rev ultra-small displacement for auxiliary pressure compensation;

R: Right-hand drive shaft, universal rotation matching most light industrial automation equipment.

This gradient small-micro combined pump targets compact dual-control hydraulic systems and gains wide recognition among global buyers of packaging and precision assembling machinery.

Product Structure

1.Core Architecture: Separated Cavity Dual-Core Integrated Structure

One-piece cast pump body is internally divided into two independent cavities to place QX42 and QX33 gear groups respectively, isolated runners prevent fluid cross-interference between two circuits.

2.Gradient Fixed Flow Output Principle

Two pump cores run independently with fixed displacement, forming collaborative flow distribution: main loop completes equipment primary movement, micro loop fulfills real-time pressure trimming to simplify external valve group configuration.

3.Wear-resistant Grade Component Configuration

Gear sets adopt carburized alloy steel with fine grinding to improve surface wear resistance; general-purpose high-flexibility sealing pieces avoid medium-pressure leakage; miniature precision bearings support stable long-term intermittent operation.

4.Universal Standard Oil Port & Mounting Size

Factory pre-processed standard flange and oil port dimensions consistent with original BUCHER specification, enabling direct replacement without modifying equipment pipelines or mounting bases.

Application Scenarios

Packaging machinery: dual-loop hydraulic power for automatic cutting and pressing equipment;

Precision assembling equipment: compact hydraulic drive for electronic component fixture;

Small testing bench: dual-flow hydraulic source for miniature material performance testing devices;

Light textile machinery: auxiliary hydraulic station for cloth clamping and tension control;

Mini custom power unit: integrated dual-circuit compact power pack for small non-standard hydraulic equipment.