Gear oil pump QX Series QX83-160/63-125R

Product Description

Gear oil pump QX Series QX83-160/63-125R is a heavy-duty dual-displacement tandem gear pump launched by Hengmeisi, a reliable Chinese factory direct supplier, focusing on large-flow and high-stability continuous hydraulic supply scenarios. Different from small-displacement compound pumps and graded micro-control multi-stage pumps, this model adopts dual large-flow core configuration of QX83 super-large displacement and QX63 large displacement, with 160ml/r and 125ml/r dual flow output. The two sets of oil circuits operate independently and can work synchronously or separately, with ultra-high comprehensive flow rate and low high-load pulsation ≤1.7%. It solves the problem of insufficient oil supply and insufficient power of ordinary gear pumps under long-term full-load heavy-duty operation.

Product Advantages

1. Dual Large-Displacement Synchronous Output, Super High Flow Supply Capacity

Unlike conventional small and medium-flow combined pumps, QX83-160/63-125R adopts double large-flow core matching design. The front and rear pump cores provide stable large-flow output at the same time, which can quickly fill the hydraulic cylinder and improve the overall operating speed of large-scale equipment. It is suitable for high-frequency and high-load continuous oil supply requirements that ordinary multi-stage pumps cannot meet, and greatly improves the working efficiency of heavy machinery.

2. Heavy-Duty Continuous Operation Resistance, Anti-Fatigue Upgrade

Aiming at the long-term full-load operation characteristics of engineering machinery, the whole pump is optimized for heavy-load fatigue resistance. The gear pair adopts integral alloy steel forging and overall quenching treatment, which improves the overall structural strength and avoids tooth surface wear and tooth collapse under long-term high-load operation. The reinforced thickened pump body shell effectively resists external vibration and impact, ensuring stable and uninterrupted operation of the equipment for a long time.

3. Dual-Circuit Independent Load Adaptation, Flexible Matching

The two internal oil circuits are completely isolated without mutual flow interference. The large 160ml/r flow circuit is used for high-speed and large-stroke main action, and the 125ml/r flow circuit is used for auxiliary linkage and synchronous driving. It can realize single-circuit independent operation and dual-circuit simultaneous operation according to working conditions, with flexible load adaptation, avoiding power waste caused by fixed output of ordinary gear pumps.

4. Industrial-Grade Sealing & Anti-Pollution System

Equipped with industrial-grade composite sealing components, which adapt to harsh working environments such as dust, high temperature and oil pollution on construction sites. It maintains zero leakage under 290bar peak pressure and -25℃~115℃ wide temperature range. The built-in coarse filtration protective structure effectively blocks large particle impurities in hydraulic oil, reduces gear wear and blockage failure, and extends the continuous working cycle of the equipment.

Model Code

The model coding rule of QX83-160/63-125R is clear and standardized, helping global customers quickly identify product configuration and parameters:

- QX83-160: Front stage super-large flow heavy-duty pump series, displacement 160ml/r, used for main high-power hydraulic output;

- QX63-125: Rear stage large flow enhanced pump series, displacement 125ml/r, matching auxiliary synchronous drive;

- / : Tandem coaxial integrated structure, dual pump core one-piece assembly;

- R: Clockwise rotation; counterclockwise (L) can be customized according to customer’s equipment installation standards.

QX83-160/63-125R is a core heavy-duty large-flow twin pump in the QX series, specially developed for full-load continuous operation of large engineering and handling machinery.

Product Structure

1. Reinforced Integral Tandem Heavy-Duty Pump Body

Adopts thickened integral cast iron one-piece forming process, with higher overall rigidity than ordinary thin-wall pump bodies. It is not easy to deform under long-term high pressure and vibration. The coaxial double-cavity tandem structure ensures synchronous and stable operation of dual pump cores, and the overall structure is firm and durable.

2. Independent Thickened Isolation Cavity Structure

Thickened integral isolation baffle is used between the dual pump cavities, which enhances the pressure resistance of the partition. It completely isolates the two oil circuits, ensures independent pressure regulation and flow output of each circuit, and eliminates hydraulic crosstalk and pressure fluctuation problems in dual-circuit operation.

3. Enhanced Large-Flow Gear Transmission Pair

Optimized large-module gear tooth profile design increases gear meshing area and bearing capacity. After overall forging and heat treatment, the gear pair has strong wear resistance and pressure resistance, which meets the long-term high-frequency operation requirements of large-flow hydraulic systems and avoids efficiency attenuation.

4. High-Strength Integrated Drive Shaft

The integral thickened drive shaft is adopted to drive dual pump cores synchronously, with strong torsion resistance and fatigue resistance. It can withstand long-term high-speed and high-torque operation, ensuring power output stability and reducing shaft body deformation and failure probability.

Application Scenarios

QX83-160/63-125R large-flow heavy-duty dual gear pump is widely applicable to heavy-load and continuous-operation industrial and engineering equipment:

1. Large Construction Machinery: Large tonnage wheel loaders, heavy road rollers, asphalt pavers, large excavator auxiliary hydraulic systems;

2. Bulk Handling Equipment: Port stackers, reclaimers, large conveyor hydraulic drive systems;

3. Mining Engineering Equipment: Mine heavy-duty transport vehicles, underground loading machinery, mining hydraulic support auxiliary pumps;

4. Large Industrial Hydraulic Equipment: Industrial large-scale hydraulic stations, heavy-duty hydraulic lifting systems, metallurgical rolling auxiliary equipment;

5. Special Heavy Vehicles: Large sanitation cleaning vehicles, bulk material transport vehicles, engineering rescue vehicle hydraulic power systems.