Gear oil pump QX Series QX61-250R102

2. Product Overview

As a trustworthy Chinese supplier of industrial hydraulic components, Hengmeisi independently develops and produces the high-performance QX61-250R102 internal gear oil pump to meet large-flow hydraulic power demands of heavy industrial equipment. The QX61-250R102 gear pump is a fully interchangeable drop-in replacement for the original Bucher QX61-250R102 pump with identical installation dimensions and operating parameters. Featuring a standard displacement of 248.4cm³/rev and clockwise rotation, this QX61-250R102 pump runs stably under 100bar long-term continuous pressure, maintaining excellent working efficiency without flow attenuation or internal leakage. Suitable for fixed and variable speed driving modes, the pump adapts to diverse complex industrial working conditions and serves as the core power component for large-scale hydraulic systems.

Different from small and medium-displacement gear pumps, the QX61-250R102 internal gear oil pump focuses on large-flow stable output and heavy-load continuous operation. Optimized gear meshing structure effectively reduces fluid turbulence and meshing loss, while built-in pressure balance compensation design ensures consistent hydraulic output throughout long-term service cycles. All core components undergo precision CNC machining and strict durability testing, guaranteeing reliable and low-failure operation for 24-hour uninterrupted production scenarios.

3. Exclusive Product Strengths

3.1 Large Displacement & Stable Hydraulic Output

The QX61-250R102 internal gear oil pump is designed with a super-large 248.4cm³/rev displacement, catering to high-flow supply requirements of heavy machinery hydraulic systems. Ordinary large-flow pumps often suffer from unstable pressure and severe pulsation, while this Hengmeisi gear pump adopts optimized conjugate gear profile to balance internal pressure distribution. The structural upgrade eliminates radial unbalanced load, enabling the QX61-250R102 pump to maintain smooth and consistent flow output even under long-term heavy-load operation, greatly improving overall hydraulic system working stability.

3.2 98% High Volumetric Efficiency & Energy Saving

With refined gear matching clearance and advanced pressure compensation technology, the QX61-250R102 gear pump achieves a volumetric efficiency of up to 98%, far exceeding most ordinary industrial gear pumps. High operational efficiency effectively reduces invalid power consumption and heat generation during equipment operation. This energy-saving performance not only lowers long-term equipment operating costs but also avoids system overheating failure caused by low efficiency, realizing efficient and economical hydraulic power supply.

3.3 Reinforced Structure & Extended Service Life

The pump body of QX61-250R102 internal gear oil pump adopts thickened high-strength alloy cast iron integral forming technology, with higher structural rigidity and deformation resistance. Core gear pairs are made of high-purity alloy steel, processed through carburizing and quenching hardening treatment to reach HRC60 surface hardness, delivering excellent wear resistance and impact resistance. Matched with imported high-pressure composite sealing parts, the pump realizes zero leakage in wide temperature environments from -30℃ to 120℃. Strict factory quality inspection ensures the service life of the QX61-250R102 pump exceeds 16000 working hours under rated conditions.

3.4 Low Noise & Low Pulsation Operation

The QX61-250R102 gear pump adopts large-overlap-angle internal gear meshing design, which fundamentally reduces gear meshing vibration and hydraulic flow pulsation. The full-load operating noise is controlled below 68dB, realizing low-noise and smooth operation. Low-vibration working characteristics avoid pipeline resonance and equipment jitter, protecting peripheral hydraulic components from fatigue damage. This feature makes the pump applicable to both ordinary industrial workshops and high-standard silent production environments.

3.5 Wide Compatibility & 100% Interchangeability

Completely compatible with the original Bucher QX61-250R102 pump, the QX61-250R102 internal gear oil pump requires no equipment modification or pipeline adjustment for direct replacement. The pump supports multiple hydraulic media including mineral oil, biodegradable hydraulic fluid and fire-resistant hydraulic oil, adapting to diverse industrial application scenarios. Standard R102 special oil port and sealing configuration ensures universal assembly for most heavy-duty hydraulic equipment, providing high-cost-performance imported replacement solutions.

4. Model Parameter Definition

Every code of QX61-250R102 follows standardized industrial specifications, clearly defining product series, displacement, rotation and configuration features:

QX: High-performance internal gear oil pump series, featuring high efficiency, low pulsation and strong pressure resistance

61: Heavy-duty large-flow series code, thickened pump body structure for long-term heavy-load continuous operation

250: Standard large displacement code, actual displacement 248.4cm³/rev for heavy machinery hydraulic supply

R: Clockwise rotation direction, matching mainstream industrial equipment assembly standards

102: Special oil port layout and enhanced sealing configuration, customized for large-flow pump anti-leakage and stable operation

5. Structural Design Features

The QX61-250R102 internal gear oil pump consists of high-precision alloy gear pair, high-rigidity integral cast iron pump housing, automatic pressure balance plate and anti-fatigue bearing assembly. The symmetrical balanced gear structure eliminates radial pressure unbalance, reducing long-term operating friction loss. Built-in automatic pressure compensation system dynamically adjusts gear matching clearance according to real-time working pressure, maintaining optimal fitting state and effectively suppressing internal leakage and flow deviation.

All key components undergo multiple precision grinding and high-pressure impact tests. The integrated one-piece pump body avoids structural deformation under large-flow hydraulic impact. The optimized internal flow channel reduces fluid turbulence and impurity deposition, improving anti-pollution ability and adapting to slightly poor oil quality working environments, ensuring long-term stable operation of the QX61-250R102 pump.

6. Industrial Application Range

Large Plastic Processing Machinery: The QX61-250R102 gear pump provides stable large-flow hydraulic power for super-large injection molding machines and extrusion equipment, supporting high-efficiency mold opening, closing and material extrusion actions.

Heavy-Duty Metallurgical & Die-Casting Equipment: Suitable for hydraulic systems of large die-casting machines, continuous casting and rolling mills, adapting to long-term high-frequency heavy-load cyclic operation.

Large-Scale Industrial Hydraulic Stations: Acts as core power source for heavy-duty hydraulic stations, meeting high-flow and high-stability hydraulic supply demands of automated production lines.

Engineering & Heavy Industrial Machinery: Applied to large hydraulic press equipment and mobile heavy machinery hydraulic systems, with strong environmental adaptability and stable output performance.