Gear oil pump QX Series QX53-040/42-032R

Product Description

Engineered by Hengmeisi, a leading China manufacturer, the QX53-040/42-032R dual internal gear pump – a perfect replacement for Bucher's QX series – combines 40cc and 32cc stages in one compact unit, outperforming traditional single or mismatched dual pumps in efficiency, stability, and installation flexibility.

Product Advantages

Balanced Dual-Displacement Design vs. Conventional Pump Solutions

Unlike pumps with uneven flow splits, the QX53-040/42-032R features a balanced 40cc/32cc dual-displacement configuration. The two gear stages operate in perfect sync, delivering proportional flow output for multi-circuit systems. This eliminates the common issues of over-sizing or under-sizing single pumps, reducing system complexity and improving energy efficiency across both high-flow and medium-pressure functions.

Precision Internal Gear Meshing for Ultra-Smooth Operation

Built with high-precision internal gear pairs, the QX53-040/42-032R operates with minimal flow pulsation and vibration. The smooth meshing action reduces mechanical stress and noise, making it ideal for applications where quiet operation and consistent hydraulic response are critical.

High-Grade Materials for Industrial-Grade Durability

• Gear & Housing: High-strength alloy steel and cast iron construction, heat-treated for maximum wear resistance and structural rigidity.

• Sealing System: Wide-temperature elastomer seals rated for -25℃ to +110℃, ensuring leak-free performance in both cold and high-heat environments.

• Bearings: Heavy-duty bearings engineered for continuous operation up to 3800 r/min, supporting both radial and axial loads reliably.

Built-In Anti-Corrosion & Contamination Resistance

The pump features optimized internal flow paths and a robust housing that protects components from corrosion and hydraulic fluid impurities. This ensures long-term reliability even in industrial environments with poor fluid quality or variable operating conditions.

Model Code Explanation

The QX53-040/42-032R naming convention clearly identifies key specifications:

• QX53: Series identifier for balanced dual-displacement internal gear pumps.

• 040/032: Dual pump displacements (40cc/rev main stage, 32cc/rev auxiliary stage).

• R: Right-hand rotation, compatible with standard system configurations.

This model is optimized for balanced multi-circuit hydraulic systems, making it a preferred choice for global buyers in machine tools, industrial automation and light construction machinery.

Product Structure

1. Core Architecture: Balanced Dual-Stage Internal Gear Design

The pump features two identical-style gear stages sharing a common drive shaft, delivering balanced, independent flow outputs for dual-circuit hydraulic systems.

2. Optimized Manufacturing:Precision-cut gears and tight-tolerance housings ensure minimal internal leakage and maximum volumetric efficiency. Internal flow paths are designed to reduce turbulence and pressure drop.

3.  Material Upgrades:

High-grade cast iron pump body with reinforced mounting flanges for vibration resistance. Alloy steel gears are surface-hardened for extended wear life.

4.Integrated Protection Features:

Built-in pressure balancing features prevent overloading of either stage, ensuring stable performance even under uneven system loads.

Application Scenarios

• Industrial Machine Tools: Dual-circuit hydraulic power units for presses, lathes and automated production lines.

• Material Handling Equipment: Hydraulic systems for forklifts, scissor lifts and pallet jacks requiring balanced flow for lifting and steering.

• Light Construction Machinery: Small excavators, compact loaders and auxiliary hydraulic systems.

• General Industrial Hydraulics: Power packs, conveyor systems and process equipment with dual independent hydraulic circuits.