Gear oil pump QX Series QX43-025R-B

Product Description

Looking for China integrated valve-type gear pump? Replace Buchner QX43. Hengmeisi Gear oil pump QX Series QX43-025R-B: built-in relief valve, 230 bar, ≤2.0% pulsation, auto stabilize & unload. No external valve block – no leaks or messy pipes. China factory direct.

Product Advantages

1. Pump-Valve Integrated One-Piece Design, Simplify Hydraulic System

Breaking the traditional split installation mode of pump and valve, QX43-025R-B integrates precision relief valve components inside the pump body. No need to purchase and install external overflow valves separately, which simplifies the overall pipeline design of the hydraulic station, reduces pipeline connectors and leakage points, shortens equipment assembly cycle, and greatly improves the integration and neatness of the hydraulic system.

2. Automatic Constant Pressure Stabilization & Overpressure Protection

The built-in precision pressure regulating valve has sensitive pressure sensing and feedback functions. When the system pressure exceeds the set value, the valve body automatically opens for pressure relief and unloading; when the pressure is stable, it closes tightly to maintain constant system pressure. It effectively avoids system pressure impact and equipment overload damage, provides stable and safe hydraulic power for precision machinery, and makes up for the defect of unregulated fixed pressure output of ordinary gear pumps.

3. Standard Fixed Displacement, High Cost-Performance Matching

Equipped with 25ml/r standardized fixed displacement, which perfectly matches the power demand of medium and small tonnage hydraulic equipment. Compared with large-flow heavy-duty pumps and multi-stage compound pumps, this model has more precise power matching, no redundant flow waste, lower motor power configuration requirements, and outstanding energy-saving and cost-reducing effects in long-term standardized operation scenarios.

4. Optimized Silent Operation & Durable Configuration

Adopts optimized low-noise involute gear tooth profile and precision grinding process, with operating noise lower than 70dB during rated operation. Equipped with high wear-resistant alloy gear pair and imported composite sealing components, it operates stably within -20℃~110℃, resists ordinary hydraulic oil impurities and pressure impact, and has a design service life of more than 16000 working hours.

QX31-020/21-010R	QX61-160/43-032R	QXV22-006R	QX62-100R18	QX43-025/32-010R
QXV43-032/43-025R326	QX41-050/33-010R09	QX62-080/51-125R	QX33-012/21-010/22-005R	QX51-080/33-010R09
QX82-200/42-020R06	QX53-050/53-050R54	QXV55-050R179	QX41-040//24-004R06-ME	QXV51-125R246
QX21-016/22-008/22-008R	QX33-012R06	QX62-100R86	QX32-016/21-010R	QX51-080/42-032R
QX22-008//24-003R06-ME	QX61-250/61-250R83	QX51-125/32-010R09	QX42-025/23-006R	QX44-025R
QXT32-16/32-16/32-16/32-16/117	QX61-250/62-080R83	QX62-080/51-080R	QX24-004R06	QX24-003R06

Model Code

The model coding of QX43-025R-B adopts international standard rules, allowing global customers to quickly confirm product configuration and core functions:

- QX43: High-precision medium-pressure gear pump series, focusing on pump-valve integrated customized models;

- 025: Standard displacement 25ml/r, suitable for medium and small flow standard hydraulic systems;

- R: Clockwise rotation, conventional installation direction for mainstream equipment;

- B: Built-in integrated relief valve configuration, core upgraded version of this series.

QX43-025R-B is a classic cost-effective pump-valve integrated gear pump in the QX43 series, specially designed for standardized, stable and low-leakage hydraulic supporting scenarios.

Product Structure

1. Built-In Integrated Valve Body Integration Structure

The pump body is integrally cast with a valve chamber structure, and the pressure regulating valve core is perfectly embedded inside the pump body. Compared with externally installed valve blocks, it has higher integration, no extra occupation of installation space, and more concise overall structure.

2. Precision Matching Gear Transmission System

The gear pair is made of high-strength alloy steel through carburizing quenching and ultra-precision grinding, with high meshing precision and small running gap. It ensures stable flow output while reducing internal leakage, and improves the volumetric efficiency of the pump under medium pressure working conditions.

3. Closed-loop Pressure Regulating Oil Passage Layout

Internal prefabricated professional pressure regulating and unloading oil passages form an internal closed-loop pressure control system. The pressure response speed is faster than traditional external valve control, the pressure regulation is more accurate, and the system pressure fluctuation is effectively suppressed.

4. Compact Sealed Integrated Assembly

Adopts integral end cover sealing and multi-layer composite sealing structure, which enhances the overall sealing performance of the pump body. It can effectively prevent oil leakage and dust infiltration, and adapt to various indoor and outdoor conventional working environments.

Application Scenarios

QX43-025R-B integrated valve-type high-pressure gear pump is widely used in medium and small standardized hydraulic equipment requiring constant pressure and low noise:

1. Light Industrial Hydraulic Machinery: Small hydraulic presses, punching machines, riveting equipment, hydraulic bending machines;

2. Plastic Auxiliary Equipment: Small and medium vertical injection molding machines, mold clamping hydraulic systems, plastic crushing auxiliary hydraulic units;

3. Automation Equipment: Automatic assembly machines, hydraulic fixture systems, packaging and forming machinery;

4. Light Engineering Machinery: Small lifting platforms, mini loaders, garden hydraulic machinery;5. General Industrial Supporting: Standard hydraulic stations, mechanical tool hydraulic systems, logistics handling equipment hydraulic power units.