Gear oil pump QX Series QX83-160/51-125R308

Product Description

QX83-160/51-125R308 – high-performance BUCHER alternative dual internal gear pump. Integrates QX83 (main) and QX51 (auxiliary) cores in one housing for independent dual-circuit oil supply. Features 308 HNBR sealing, right-hand rotation, high pressure resistance, wide temperature range, zero leakage – ideal for heavy-duty continuous operation.

Product Advantages

1. Mixed Large & Medium Displacement Dual-Circuit Design

This dual pump matches 160cc large displacement and 125cc medium displacement pump cores, forming a professional main-auxiliary integrated oil supply system. The large-flow core undertakes main equipment power output, while the medium-flow core supports auxiliary action and pressure stabilization. It effectively solves the matching problem of power and control circuits in heavy hydraulic equipment, avoiding energy waste and insufficient power of single-displacement pumps.

2. 308 Standard Sealing & Strong Leakage Resistance

Equipped with original-level 308 specification sealing components, the pump adopts high-quality HNBR composite rubber materials. It stably adapts to -20℃ to 90℃ wide temperature working environment, maintains excellent sealing performance under 330bar long-term high pressure and instantaneous impact pressure, effectively preventing oil leakage and pressure drop, and improving the overall stability of the hydraulic system.

3. Ultra-Low Pulsation & High Efficiency Output

Optimized precision internal meshing structure greatly reduces flow pulsation and running vibration. The volumetric efficiency is up to 97% with low noise operation below 75dB. Compared with traditional external gear pumps, it delivers more uniform and stable oil supply, ensuring precise and consistent action of heavy-load hydraulic equipment under long-cycle operation.

4. Heavy-Duty Anti-Pollution & Durable Structure

The integral high-rigidity cast iron pump body and carburized precision gear sets provide strong wear resistance and compression resistance. The internal meshing structure has outstanding oil impurity tolerance, which can adapt to harsh industrial oil conditions, reduce gear jamming and component wear, and greatly extend the service life of the pump under continuous heavy-load operation.

Model Code

QX83-160/51-125R308 follows standard BUCHER coding rules with clear and professional parameter definition:

QX83-160: QX83 series large-displacement pump core, 160cm³/rev displacement, for main high-power hydraulic oil supply;

QX51-125: QX51 series medium-displacement pump core, 125cm³/rev displacement, for auxiliary hydraulic circuit power compensation;

R: Right-hand drive shaft, standard rotation direction, compatible with most heavy-duty industrial host equipment;

308: Standard configuration code, including HNBR high-pressure sealing kit, dedicated oil port layout and mounting flange specification.

This mixed dual-displacement pump is specially customized for heavy industrial composite hydraulic systems, widely applied in high-pressure and long-running industrial equipment scenarios.

Product Structure

1. Integrated Dual Pump Core Independent Structure

The product adopts an integral cast pump body, built with two independent QX83 and QX51 series gear assemblies. Dual separate sealed flow channels are designed inside the pump body, ensuring non-interference independent oil output of main and auxiliary circuits, with compact overall structure and high integration.

2. Graded Fixed Flow Output Mechanism

Two pump cores with different displacements operate independently with fixed flow. The main circuit provides high-flow power output, and the auxiliary circuit provides stable flow compensation. It realizes graded hydraulic power supply, simplifies complex hydraulic circuit design and improves system operation efficiency.

3. Heavy-Duty Wear-Resistant Configuration

Gear sets and drive shafts are made of high-strength alloy steel through carburizing quenching and precision grinding for ultra-high wear resistance; matched with high-load precision roller bearings to support stable operation up to 1800rpm; 308 professional sealing components ensure long-term high-pressure leak-proof performance.

4. Standardized Integrated Interface

Factory pre-assembled standard oil inlet and outlet ports and mounting flange, with universal and versatile interface specifications. It supports quick on-site installation and pipeline connection, and facilitates daily inspection, maintenance and spare part replacement.

Application Scenarios

Metallurgical hydraulic stations: high-pressure main and auxiliary oil supply for rolling mills and continuous casting equipment;

Heavy engineering machinery: power support for large excavators, forging presses and hydraulic test benches;

Marine hydraulic systems: stable hydraulic power supply for ship deck machinery and auxiliary equipment;

Industrial forming equipment: dual-circuit hydraulic power for large injection molding and die-casting machines;

Heavy-duty customized hydraulic units: integrated power source for long-cycle high-load industrial hydraulic systems.