Gear oil pump QX Series QX21-012/22-006R

Product Description

Gear oil pump QX Series QX21-012/22-006R: Hengmeisi miniature precision dual gear pump. Ultra-small tandem design (12ml/r + 6ml/r), two isolated circuits for fast micro-feeding & high-pressure holding. ≤1.3% pulsation, micron precision. Solves excess flow, low accuracy & idle loss. China factory direct.

Product Advantages

1. Micro Displacement Hybrid Matching, Exclusive Precision Hydraulic Mode

Breaking the limitation of conventional medium and large flow pump bodies, QX21-012/22-006R adopts ultra-small dual-displacement differential matching design. The 12ml/r low-pressure circuit realizes fast micro-stroke feeding to improve equipment running efficiency; the 6ml/r ultra-high pressure micro-flow circuit provides stable high-pressure locking and precise pressure holding. It avoids the precision failure caused by excessive flow impact of ordinary pumps, and is exclusively suitable for micro-stroke and high-precision hydraulic action scenarios.

2. Ultra-Low Micro-Leakage & Stable Pressure Holding Performance

Adopts micron-level precision grinding and pairing process for gear pairs and side plates, with ultra-small internal fit clearance. The customized micro-high-pressure sealing assembly effectively suppresses internal micro-leakage. During long-term pressure holding operation, the system pressure drop is extremely low, which perfectly solves the pressure relief and positioning deviation problems of ordinary gear pumps in precision clamping and positioning links, ensuring processing consistency of precision equipment.

3. Super Compact Mini Body, Ultra-Narrow Space Adaptation

The whole pump adopts miniaturized integrated shrink design, with smaller overall volume and lighter weight than conventional combined double pumps. It is specially optimized for narrow and compact installation space of miniature automation equipment. The integrated coaxial structure eliminates redundant connecting parts, realizes lightweight assembly, and effectively reduces the overall load and volume of small hydraulic units.

4. Mute Stable Operation & Fine Environment Adaptability

Optimized micro-module low-noise tooth profile design reduces gear meshing impact and running vibration. The full-fit damping structure ensures stable operation with running noise lower than 68dB. It is equipped with environment-friendly composite sealing materials, adapting to indoor constant temperature and conventional workshop working conditions, with stable performance and low failure rate in long-term frequent start-stop operation of precision equipment.

Model Code

The model coding of QX21-012/22-006R follows professional micro-pump series rules, helping global customers quickly confirm precision configuration:

- QX21-012: Low-pressure micro-flow pump series, displacement 12ml/r, for fast micro-feeding and idle stroke circulation;

- QX22-006: Ultra-high pressure super-micro flow pump series, displacement 6ml/r, dedicated to precise clamping and pressure holding;

- / : Tandem coaxial integrated miniature pump body structure;

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

QX21-012/22-006R is a core miniature precision compound pump in the QX series, specially developed for high-precision micro hydraulic control scenarios.

Product Structure

1. Miniaturized Integrated Tandem Pump Body

Adopts precision die-casting one-piece forming process, with miniaturized double-cavity series layout. The overall structure is compact and rigorous without redundant structure. A single drive shaft synchronously drives two groups of micro-specification gear assemblies, realizing dual-circuit independent hydraulic output, with higher integration than split miniature pump combination.

2. Micro-Gap Precision Matching Structure

All core moving parts adopt micron-level precision machining and debugging. The gear pair, side plate and shaft body are closely matched to minimize internal leakage gap. The unique micro-gap control technology ensures high volumetric efficiency and precise flow output of the pump body under low and high pressure switching conditions.

3. Dual-Circuit Independent Isolation Structure

Built-in thin and high-strength integrated isolation partition inside the pump body, which completely isolates the low-pressure fast flow cavity and ultra-high pressure pressure-holding cavity. The two oil circuits operate independently without pressure crosstalk and flow interference, ensuring independent and accurate execution of fast feeding and precise locking actions.

4. Lightweight Anti-Vibration Drive Structure

The miniature high-precision drive shaft and low-friction bearing assembly are adopted, with low running resistance and small vibration. It adapts to frequent start-stop and low-speed stable operation of precision equipment, effectively avoiding positioning errors caused by mechanical vibration and ensuring long-term stable operation of the pump body.

Application Scenarios

QX21-012/22-006R miniature precision dual gear pump is widely used in various micro and high-precision hydraulic equipment:

1. Precision Processing Machinery: Micro small hydraulic punching machine, precision riveting equipment, miniature pressure maintaining forming machine;

2. Automation Precision Fixture: Electronic product positioning fixture, small die clamping hydraulic system, precision locking power unit;

3. Medical & Light Industrial Equipment: Light medical auxiliary hydraulic equipment, small textile precision tension control machinery;

4. Mini Intelligent Equipment: Small lifting platform hydraulic system, miniature automation handling equipment;

5. Precision Detection Equipment: Hydraulic power unit of industrial precision testing instruments, calibration and positioning auxiliary system.