Gear oil pump QX Series QX21-010//24-004R324

ℹ️ Product Description

Hengmeisi Gear oil pump QX Series QX21-010//24-004R324: tandem internal gear pump (10cc main + 4cc auxiliary, single shaft) from China factory direct. Saves space, cuts maintenance, synchronizes dual hydraulic outputs.

✨ Product Advantages

⚙️ Tandem Dual-Stage Design vs. Single-Stage Pumps

The QX21-010//24-004R324 combines two independent gear stages in one compact housing. The 10cc stage handles high-volume flow, while the 4cc stage provides precise, low-volume pressure control. This eliminates the need for two separate pumps, reducing system weight, piping complexity, and potential leak points—ideal for equipment requiring both general power and fine-tuned hydraulic functions.

📊 Dual-Stage Synchronized Performance

With precision-machined gear pairs, both stages operate with minimal pulsation and consistent output. The shared drive shaft ensures speed synchronization, preventing flow imbalance between circuits. This stable performance protects downstream components and extends the service life of the entire hydraulic system.

🔩 Compact Build for Tight Installations

The integrated tandem design of the QX21-010//24-004R324 saves over 30% installation space compared to two separate pumps. The compact footprint and standard R324 mounting flange make it easy to fit into mobile machinery and space-constrained industrial equipment.

🛡️ Durable Construction for Continuous Use

★ Gear Sets: High-strength alloy steel gears, heat-treated for wear resistance.

★ Housing: Cast iron body with reinforced mounting points for vibration resistance.

★ Seals: High-quality oil-resistant seals, rated for -20°C to +80°C.

★Bearings: Heavy-duty bearings supporting continuous speeds up to 3000 rpm.

🔤 Model Code Explanation

The QX21-010//24-004R324 naming system clearly identifies its specifications:

▲ QX21: Series identifier for compact tandem internal gear pumps

▲ 010//24-004: Dual displacements (10 cm³/rev main stage, 4 cm³/rev auxiliary stage)

▲ R: Right-hand (clockwise) rotation

▲324: Standard R324 universal mounting configuration

This model is widely trusted by global buyers in light construction, material handling, and industrial automation, valued for its compact size and reliable dual-circuit performance.

🧩 Product Structure 

🏗️ Core Architecture: Tandem Internal Gear Design

The pump features two separate internal gear stages sharing a common drive shaft. This unified structure delivers two independent flow outputs from a single power source, ideal for dual-circuit systems.

💧 Dual-Stage Flow Path Optimization

Each stage has dedicated flow paths designed to minimize turbulence and pressure drop. The separate inlet and outlet ports ensure no cross-contamination between circuits, maintaining clean, consistent flow.

🛠️ Reinforced Mounting Structure

The pump body includes reinforced mounting lugs and a standard R324 flange, ensuring secure installation even under high vibration conditions. The compact layout also allows for flexible orientation in tight spaces.

🧴 Integrated Sealing System

Multi-component seals at the shaft and between stages prevent leakage, ensuring reliable operation for both high and low-pressure circuits.

🚀 Application Scenarios

🏗️ Light Construction Machinery

□ Auxiliary and steering circuits for small excavators

□ Hydraulic power units for compact loaders

□ Dual-circuit systems for aerial work platforms

📦 Material Handling Equipment

◇ Forklift lifting and tilt circuits

◇ Hydraulic systems for pallet jacks and stackers

◇ Dual-speed power units for conveyor systems

🏭 Industrial Automation

※ Dual-circuit power units for injection molding machines

※ Press clamping and feeding systems

※ Lubrication and actuation circuits for production lines

🔧 Specialized Hydraulic Tools

♩ Dual-function hydraulic power packs

♩ Lifting and positioning equipment

♩ Test benches requiring two independent flow sources

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