Gear oil pump QX Series QX41-040/21-010R14

The Hengmeisi Gear oil pump QX Series QX41-040/21-010R14 tandem pump is a drop-in replacement for Bucher QX41/QX21 series. Its 40+10 cm³ dual-pump design supports high-pressure precision hydraulics with excellent efficiency, low ripple, and reliable stability. Widely used in precision molding, servo hydraulics, and die-casting support systems.

2. Product Description

Hengmeisi QX41-040/21-010R14 gear oil pump belongs to Hengmeisi high-precision high-pressure tandem internal gear oil pump series. This Hengmeisi gear oil pump adopts integrated dual-pump structural design, with a front QX41 series main pump displacement of 40cm³/rev and a rear QX21 series auxiliary pump displacement of 10cm³/rev. The matched large and micro dual-flow configuration of Hengmeisi QX41-040/21-010R14 gear oil pump perfectly meets the dual working requirements of rapid large-flow action and high-precision micro-pressure maintaining for precision industrial equipment. This Hengmeisi gear oil pump stably supports 320bar ultra-high continuous working pressure, and the dual pump group maintains volumetric efficiency above 98% under rated working conditions.

Hengmeisi QX41-040/21-010R14 gear oil pump adopts standard clockwise rotation design and customized R14 special oil port and enhanced sealing configuration. This Hengmeisi gear oil pump adapts to a working speed range of 500r/min to 3200r/min, compatible with constant-speed and variable-speed servo hydraulic systems. Hengmeisi optimizes high-precision conjugate gear tooth profile and low-resistance internal flow channel for this dual gear oil pump. The upgraded structural design of Hengmeisi QX41-040/21-010R14 gear oil pump effectively reduces gear meshing loss and hydraulic flow turbulence, greatly improving high-pressure operation stability and long-term service life of the gear oil pump.

QX44-020R	QX42-032/31-032R	QX82-160/53-050R08	QX22-008R178	QX42-025/42-020R
QXV41-050R	QX51-080/52-063/42-025R29	QX43-020/21-010R	QXV36-010R	QXV46-032R
QX33-016/33-010R	QX51-100/52-063R29	QXV33-016R171	QXV61-160R	QX51-080/22-005R57
QX33-010/21-016R	QX42-032/23-006R	QX42-020/22-005R14	QX43-025R18	QX33-012/21-012/23-005R
QX52-063/52-063R	QX31-025//24-003R06-ME	QXV83-160/63-125R	QX53-050/33-016R12	QX61-200/51-080R102

3. Core Product Advantages

3.1 Matched Dual-Flow Design, Precision Composite Output

Traditional single pumps and ordinary tandem pumps cannot balance rapid action and high-precision pressure maintaining of precision hydraulic equipment. Hengmeisi QX41-040/21-010R14 gear oil pump integrates a 40cm³ high-flow main pump and a 10cm³ micro-flow precision auxiliary pump. The main pump of Hengmeisi gear oil pump provides powerful rapid hydraulic power for equipment fast feeding and displacement action, while the auxiliary pump undertakes ultra-precise pressure compensation and stable pressure maintaining work. The integrated dual-structure design of Hengmeisi QX41-040/21-010R14 gear oil pump simplifies complex hydraulic loops, improves equipment control accuracy and reduces overall system failure rate.

3.2 320bar Ultra-High Pressure Resistance, No Pressure Drop

Hengmeisi QX41-040/21-010R14 gear oil pump is equipped with dual independent pressure balance compensation systems. Both pump units of this Hengmeisi gear oil pump adopt symmetrical balanced gear structure to eliminate radial unbalanced pressure load during high-pressure operation. Hengmeisi QX41-040/21-010R14 gear oil pump stably maintains efficient and stable hydraulic output under long-term 320bar ultra-high pressure working conditions. This Hengmeisi gear oil pump effectively solves common defects of traditional precision pumps such as pressure fluctuation, internal leakage and flow attenuation under long-term high-pressure load.

3.3 Premium Wear-Resistant Material, Zero Leakage Performance

The integral pump body of Hengmeisi QX41-040/21-010R14 gear oil pump is made of high-strength alloy cast iron through one-piece CNC precision machining. The high-rigidity pump body structure of Hengmeisi gear oil pump resists ultra-high pressure impact and mechanical deformation, adapting to long-term high-precision cyclic operation. The dual gear pairs of Hengmeisi QX41-040/21-010R14 gear oil pump adopt high-purity alloy steel with carburizing and quenching hardening treatment, reaching HRC60 high surface hardness, ensuring ultra-stable wear resistance of dual pump groups.

Hengmeisi QX41-040/21-010R14 gear oil pump is equipped with R14 customized 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 precision industrial working conditions. This Hengmeisi gear oil pump realizes zero leakage of dual pump units under 320bar ultra-high pressure, completely solving the oil seepage problem of traditional high-pressure tandem pumps. The matched high-precision silent bearings and anti-corrosion drive shafts further enhance the overall durability of Hengmeisi gear oil pump.

3.4 Ultra-Low Pulsation & Low Noise, Stable Operation

Hengmeisi QX41-040/21-010R14 gear oil pump adopts large overlap angle internal gear meshing technology for both main and auxiliary pump units. The optimized meshing structure fundamentally reduces gear meshing vibration and hydraulic pulsation of dual pump groups. The full-load comprehensive running noise of Hengmeisi QX41-040/21-010R14 gear oil pump is controlled below 63dB. The ultra-low vibration and smooth synchronous output performance of Hengmeisi gear oil pump avoids equipment jitter and hydraulic fluctuation, ensuring high-precision and stable operation of precision servo hydraulic systems.

3.5 Full Interchangeability & Strong Media Compatibility

Hengmeisi QX41-040/21-010R14 gear oil pump is 100% fully interchangeable with the original Bucher QX41-040/21-010R14 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 QX41-040/21-010R14 gear oil pump without 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 precision industrial working conditions.

4. Model Code Explanation

Hengmeisi QX41-040/21-010R14 gear oil pump adopts standardized tandem pump coding rules, with each code accurately defining dual pump configuration and core performance parameters:

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

41: Front main pump series code, ultra-high pressure precision series, suitable for 320bar long-term high-pressure continuous operation

040: Front main pump displacement 40cm³/rev, standard medium flow for main hydraulic power output

21: Rear auxiliary pump series code, miniature high-precision series, dedicated for micro-flow pressure compensation and pressure maintaining

010: Rear auxiliary pump displacement 10cm³/rev, ultra-small precision flow specification

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

14: Special customized oil port layout and upgraded enhanced sealing configuration, exclusive for high-precision hydraulic equipment matching

5. Product Structural Features

Hengmeisi QX41-040/21-010R14 gear oil pump adopts high-precision tandem composite structure, composed of QX41 main pump gear pair, QX21 auxiliary pump gear pair, high-rigidity integral cast iron pump body, dual-group independent pressure balance plates and precision 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-pressure running friction loss of Hengmeisi gear oil pump.

Hengmeisi QX41-040/21-010R14 gear oil pump is equipped with dual independent automatic pressure compensation balance systems. The internal balance plates of main and auxiliary pumps automatically adjust gear matching clearance according to real-time pressure changes. This core technology keeps both pump units of Hengmeisi gear oil pump in optimal working state synchronously during long-term ultra-high pressure operation. The stable matching clearance effectively suppresses internal leakage and flow deviation, ensuring long-term consistent and precise hydraulic output of Hengmeisi QX41-040/21-010R14 gear oil pump.

All core components of Hengmeisi QX41-040/21-010R14 gear oil pump undergo precision grinding and strict dual-pump linkage high-pressure durability tests. The one-piece integrated pump body has excellent ultra-high pressure resistance, high temperature resistance and deformation resistance. The superior structural stability enables Hengmeisi QX41-040/21-010R14 gear oil pump to adapt to 24-hour uninterrupted high-precision industrial hydraulic system operation.

6. Application Scenarios

Precision Injection Molding Machinery: Hengmeisi QX41-040/21-010R14 gear oil pump is widely used in high-end precision injection molding machines. The dual-flow matched performance of Hengmeisi gear oil pump meets the requirements of rapid mold movement and high-precision constant-pressure injection, effectively improving plastic product molding accuracy and surface finish.

Servo Hydraulic Station Systems: Hengmeisi QX41-040/21-010R14 gear oil pump serves as the core power component of precision servo hydraulic stations. The low-pulsation and high-precision pressure maintaining performance of Hengmeisi gear oil pump matches servo frequency conversion control, realizing energy-saving and high-precision hydraulic output.

Die-Casting & Metallurgical Auxiliary Equipment: Hengmeisi QX41-040/21-010R14 gear oil pump applies to precision hydraulic control systems of die-casting machines and metallurgical auxiliary equipment. The ultra-high pressure stability of Hengmeisi gear oil pump adapts to long-term high-frequency cyclic operation of industrial heavy-duty precision equipment.

Precision Machining Hydraulic Equipment: Hengmeisi QX41-040/21-010R14 gear oil pump is suitable for precision hydraulic presses, automated fixture equipment and hydraulic test benches. The stable and precise hydraulic output of Hengmeisi gear oil pump ensures consistent operation accuracy of precision processing equipment.

High-End Industrial Hydraulic Systems: Hengmeisi QX41-040/21-010R14 gear oil pump is widely used in various customized high-precision industrial hydraulic systems. The compact tandem structure and strong environmental adaptability of Hengmeisi gear oil pump save installation space and improve overall system operation stability.