Gear oil pump QX Series QX61-200/63-080R12

Hengmeisi QX61-200/63-080R12 directly replaces Bucher QX61. It features a 200+80 cm³ dual pump design for high flow and pressure, with high efficiency, low pulsation, and rugged durability. Ideal for heavy hydraulics like injection molding and die-casting.

2. Product Description

Hengmeisi QX61-200/63-080R12 gear oil pump belongs to Hengmeisi QX61 heavy-duty large-flow tandem internal gear oil pump series. This Hengmeisi gear oil pump adopts an integrated dual-pump structural design, with a front main pump displacement of 200cm³/rev and a rear auxiliary pump displacement of 80cm³/rev. The super-large dual-flow configuration of Hengmeisi QX61-200/63-080R12 gear oil pump completely meets the working requirements of rapid large-flow feeding and long-term high-pressure pressure holding for heavy industrial equipment. This Hengmeisi gear oil pump stably supports 180bar continuous working pressure, and the overall volumetric efficiency of the dual pump group remains above 97% under rated working conditions.

Hengmeisi QX61-200/63-080R12 gear oil pump adopts standard clockwise rotation design and universal R12 industrial oil port and sealing configuration. This Hengmeisi gear oil pump adapts to a working speed range of 500r/min to 2800r/min, compatible with constant-speed and variable-speed driving modes of large hydraulic systems. Hengmeisi optimizes the heavy-duty conjugate gear tooth profile and internal low-resistance flow channel for this dual gear oil pump. The upgraded structural design of Hengmeisi QX61-200/63-080R12 gear oil pump effectively reduces high-flow turbulence loss and gear meshing friction, greatly improving the continuous operation stability and overall service life of the gear oil pump under heavy-load conditions.

QX53-063/31-025R	QXEH42-032R	QX33-012/23-005R	QXP23-006R358	QXP23-006R376
QX51-080/22-008R	QX81-400R170	QX43-032/42-032R	QX23-005R11	QX31-032/31-032/33-016R
QX51-100/53-050R118-1	QX41-063/22-008R12	QX51-080/23-008/23-006R	QX82-200/62-100R86	QX61-200/63-100R09
QX61-160/63-080R09	QX41-063/21-016/23-005R	QX61-160/42-020/23-005R	QX41-63/41-50/31-32/31-20R65	QX41-50/41-40/31-32/31-25R65
QX41-63/41-50/31-32/31-32R65	QX82-250/62-125/62-080R09-Y	QXV23-008R179	QX51-080R11	QXV24-008R179

3. Core Product Advantages

3.1 Super Large Dual-Flow Integration, High Working Efficiency

Ordinary tandem gear pumps cannot support the long-term large-flow and heavy-load operation of large industrial machinery. Hengmeisi QX61-200/63-080R12 gear oil pump integrates a 200cm³ large-flow main pump and an 80cm³ auxiliary pump into one compact unit. The large-displacement main pump of Hengmeisi gear oil pump provides powerful rapid hydraulic power for equipment fast action, while the auxiliary pump undertakes precise pressure maintaining and auxiliary power output. The integrated design of Hengmeisi QX61-200/63-080R12 gear oil pump simplifies complex hydraulic loop structures, reduces equipment assembly space and lowers overall system operating costs.

3.2 Heavy-Duty High-Pressure Stability, No Flow Attenuation

Hengmeisi QX61-200/63-080R12 gear oil pump is equipped with dual independent pressure balance compensation structures. Both pump units of this Hengmeisi gear oil pump adopt symmetrical balanced gear design to eliminate radial unbalanced pressure load during high-flow operation. Hengmeisi QX61-200/63-080R12 gear oil pump stably maintains efficient and stable hydraulic output under long-term 180bar continuous high-pressure heavy-load working conditions. This Hengmeisi gear oil pump effectively avoids common problems of traditional large-flow pumps such as pressure drop, flow attenuation and output instability after long-term operation.

3.3 Reinforced Heavy-Duty Structure, Ultra-Long Service Life

The integral pump body of Hengmeisi QX61-200/63-080R12 gear oil pump is made of thickened high-strength alloy cast iron, processed by one-piece CNC precision forming technology. The reinforced pump body structure of Hengmeisi gear oil pump has extremely high rigidity and impact resistance, which can resist high-flow hydraulic impact and long-term mechanical deformation. The dual gear pairs of Hengmeisi QX61-200/63-080R12 gear oil pump are made of high-purity alloy steel through carburizing and quenching hardening treatment, with surface hardness up to HRC60, fully adapting to 24-hour uninterrupted heavy-load wear-resistant operation.

Hengmeisi QX61-200/63-080R12 gear oil pump is equipped with R12 standard upgraded high-pressure composite sealing components. The professional sealing system of Hengmeisi gear oil pump adapts to -30℃ to +120℃ wide temperature alternating environment and various harsh industrial working conditions. This Hengmeisi gear oil pump realizes zero leakage of dual pump units under rated high pressure, completely solving the oil seepage and leakage defects of traditional large-flow tandem pumps. The matched high-precision heavy-duty bearings and anti-corrosion thickened drive shafts further enhance the overall durability of Hengmeisi gear oil pump.

3.4 Low Pulsation & Low Noise, Stable Synchronous Operation

Hengmeisi QX61-200/63-080R12 gear oil pump adopts large overlap angle internal gear meshing technology for both main and auxiliary pump units. The optimized meshing structure fundamentally reduces high-flow hydraulic pulsation and gear meshing vibration of the dual pump groups. The full-load comprehensive running noise of Hengmeisi QX61-200/63-080R12 gear oil pump is controlled below 68dB. The low-vibration and smooth synchronous output performance of Hengmeisi gear oil pump avoids pipeline resonance, equipment jitter and part fatigue damage, ensuring safe and stable operation of large-scale full-cycle hydraulic systems.

3.5 100% Interchangeable & Wide Media Compatibility

Hengmeisi QX61-200/63-080R12 gear oil pump is fully interchangeable with the original Bucher QX61-200/63-080R12 tandem gear pump. All installation dimensions, flange standards, oil port positions and dual pump performance parameters of Hengmeisi gear oil pump are completely consistent with imported original pumps. Customers can directly replace old imported pumps with Hengmeisi QX61-200/63-080R12 gear oil pump without any pipeline modification and parameter debugging. This Hengmeisi gear oil pump supports mineral hydraulic oil, biodegradable hydraulic fluid and fire-resistant hydraulic oil, adapting to diverse complex working conditions of heavy industrial equipment.

4. Model Code Explanation

Hengmeisi QX61-200/63-080R12 gear oil pump adopts standardized tandem pump coding rules, with each code accurately defining the dual pump configuration and core performance parameters:

QX: Professional internal gear oil pump series independently developed by Hengmeisi, featuring high pressure resistance, high efficiency and low pulsation

61: Front pump heavy-duty large-flow series code, reinforced thickened pump body, specially designed for super-large flow and heavy-load continuous operation

200: Front main pump displacement 200cm³/rev, super-large flow specification for rapid hydraulic circulation of heavy machinery

63: Rear auxiliary pump series code, high-stability medium and high-pressure series, matching large-flow main pump for composite hydraulic output

080: Rear auxiliary pump displacement 80cm³/rev, medium flow for precise pressure maintaining and auxiliary power supply

R: Rotation direction mark, representing clockwise rotation of the entire tandem gear oil pump

12: Standard industrial oil port layout and enhanced sealing configuration, universal for most heavy-duty industrial hydraulic equipment installation

5. Product Structural Features

Hengmeisi QX61-200/63-080R12 gear oil pump adopts integrated heavy-duty tandem composite structure, composed of large-flow main pump gear pair, stable auxiliary pump gear pair, high-rigidity integral cast iron pump body, dual-group independent pressure balance plates and heavy-duty silent bearing assembly. Hengmeisi applies symmetrical balanced gear structure to both pump units of this gear oil pump. The optimized structural design eliminates radial unbalanced load of dual pump groups and reduces synchronous high-flow running friction loss of Hengmeisi gear oil pump.

Hengmeisi QX61-200/63-080R12 gear oil pump is equipped with dual independent automatic pressure compensation balance systems. The internal balance plates of main and auxiliary pumps can automatically adjust and compensate gear matching clearance according to real-time pressure and flow changes. This core technology keeps both pump units of Hengmeisi gear oil pump in the optimal working state synchronously during long-term heavy-load operation. The stable matching clearance effectively suppresses internal leakage and flow deviation, ensuring long-term consistent and efficient hydraulic output of Hengmeisi QX61-200/63-080R12 gear oil pump.

All core components of Hengmeisi QX61-200/63-080R12 gear oil pump undergo precision grinding and strict dual-pump linkage heavy-load durability tests. The one-piece integrated pump body has excellent pressure resistance, high temperature resistance and impact resistance. The superior structural stability enables Hengmeisi QX61-200/63-080R12 gear oil pump to adapt to 24-hour uninterrupted heavy-load operation of large-scale industrial composite hydraulic systems.

6. Application Scenarios

Large Plastic Injection Molding Machinery: Hengmeisi QX61-200/63-080R12 gear oil pump is the core hydraulic power component for large and super-large injection molding machines. The super-large dual-flow performance of Hengmeisi gear oil pump meets the requirements of rapid mold opening and closing, high-pressure injection and stable pressure holding of large plastic equipment, improving overall production efficiency and product molding accuracy.

Heavy-Duty Die-Casting & Metallurgical Equipment: Hengmeisi QX61-200/63-080R12 gear oil pump is widely used in hydraulic systems of large die-casting machines, continuous casting machines and metallurgical rolling equipment. The heavy-load resistance and stable synchronous output of Hengmeisi gear oil pump fully adapt to long-term high-frequency and heavy-load cyclic operation of metallurgical and die-casting industries.

Large-Scale Industrial Hydraulic Stations: Hengmeisi QX61-200/63-080R12 gear oil pump serves as the main composite power source of large multi-functional hydraulic stations. The dual independent flow supply performance of Hengmeisi gear oil pump can support simultaneous operation of multiple large hydraulic actuators, meeting the high-power hydraulic demand of automated industrial production lines.

Heavy Extrusion & Press Machinery: Hengmeisi QX61-200/63-080R12 gear oil pump applies to hydraulic systems of large extrusion machines, hydraulic presses and stretching equipment. The low-pulsation and high-pressure stable output performance of Hengmeisi gear oil pump ensures uniform and stable material processing, effectively improving product surface quality and qualification rate.

Engineering & Heavy Industrial Hydraulic Systems: Hengmeisi QX61-200/63-080R12 gear oil pump is suitable for various customized heavy-duty composite hydraulic equipment. The compact integrated tandem structure and strong environmental adaptability of Hengmeisi gear oil pump save installation space for large equipment and reduce long-term system failure rate and maintenance costs.