Gear oil pump QX Series QX61-250/43-025R116-8

Product Description

Hengmeisi Gear oil pump QX Series QX61-250/43-025R116-8 – China factory direct replacement for Bucher triple pumps. Integrates 25cc+16cc+12cc independent outputs, 250 bar continuous / 280 bar peak, low pulsation, high efficiency – ideal for equipment needing multiple independent hydraulic circuits in a single pump.

Product Advantages

Multi-Circuit Combined Design vs Single Gear Pump Structure

Different from conventional single-displacement internal gear pumps, Internal Gear Pump QX31-025/21-016/21-012R adopts three-group integrated pump body layout. Three separate oil outlets provide independent oil supply for different hydraulic loops at the same time, save installation space and reduce extra motor cost for multi-loop system.

Integrated Right Rotation Standard Layout

QX31-025/21-016/21-012R is standardized R right-hand rotation (clockwise from drive end), unified mounting flange, directly matched standard IEC motor without transitional adapter, greatly simplify hydraulic station piping layout.

Premium Wear-resistant Raw Materials

Gear set: Alloy steel carburizing quenching + precision grinding for excellent wear resistance under long-time high-pressure load;

Standard Seals: NBR composite seal as default, optional FKM high-temperature seal, applicable for -20℃~+80℃ hydraulic oil;

High-precision roller bearings lower running friction loss and extend the whole service life of QX31-025/21-012R.

Low Pulsation & Low Noise Performance

Optimized inner meshing arc tooth profile cuts meshing vibration and noise, QX31-025/21-016/21-012R running noise ≤75dB(A), suitable for precision production environment with strict noise limit.

Model Code

QX31-025/21-016/21-012R owns clear coding logic for global buyers to confirm multi-spec parameters easily without professional hydraulic knowledge:

QX = Internal meshing gear pump general series code;

31/21 = Different frame size of independent pump modules (31-series large housing + two sets of 21-series small housing);

025/016/012 = Three respective theoretical displacement:25cc/rev,16cc/rev,12cc/rev;

R = Right-hand shaft rotation specification.

As classic triple combined model of QX series, QX31-025/21-016/21-012R is stocked in Hengmeisi China factory for direct replacement of imported compound pumps.

Product Structure

1.Core Architecture: Multi-body Floating Side Plate Combined Internal Gear Structure

QX31-025/21-016/21-012R is assembled by three independent pump units sharing one common drive shaft, each unit equips floating compensation side plate to automatically eliminate internal clearance leakage under high pressure, each outlet controls separate hydraulic circuit individually.

2.Unified R Rotation & Integrated Mounting Base

Whole pump uses unified right rotation design, one-piece shared mounting flange, consistent with standard compact hydraulic power unit installation size for quick old pump replacement.

3.Material Configuration

All gear parts: Heat-treated alloy steel with fine grinding to resist heavy load abrasion;Integrated pump housing: High-density cast alloy, anti-deformation under instantaneous 280bar peak pressure;

Sealing system: Standard NBR rubber, FKM alternative for high-temperature harsh working condition.

Application Scenarios

Precision automation: Multi-circuit CNC special machine tools, multi-action hydraulic fixture unit

Plastic industry: Multi-loop auxiliary hydraulic system of composite small injection molding machines

Lifting & logistics: Multi-speed control hydraulic lifting platform, multi-function warehouse cargo lift

Special machinery: Sanitary multi-actuator hydraulic vehicle, light metallurgy multi-circuit hydraulic station

Compact hydraulic power pack: Custom multi-output small hydraulic units for automation equipment