Gear oil pump QX Series QX33-016R18

The quality Gear Pump QX33-016R18 is engineered by Hengmeisi – a leading China manufacturer and factory direct supplier, to replace conventional low-pressure cast gear pumps with high-precision floating side plate technology. Rated at 220bar continuous, 250bar peak pressure, this QX33-016R18 model delivers higher volumetric efficiency (94%), low flow pulsation (≤2.2%), compact integrated design for medium and heavy-duty hydraulic applications.

二、Product Description

The quality Gear Pump QX33-016R18 is engineered by Hengmeisi – a leading China manufacturer and factory direct supplier, to replace conventional low-pressure cast gear pumps with high-precision floating side plate technology. Rated at 220bar continuous, 250bar peak pressure, this QX33-016R18 model delivers higher volumetric efficiency (94%), low flow pulsation (≤2.2%), compact integrated design for medium and heavy-duty hydraulic applications.

QX63-125/43-032/22-008R	QX52-063/53-050/53-050R	QX61-160/63-080/32-012R	QX82-250/82-250R06	QXP32-016R
QXP42-032R	QX31-020/22-005R14	QX41-040/32-016//24-003R06-ME	QX42-032/23-005R29	QX31-032/22-005L11
QX51-100/43-032/21-016R	QX21-016/21-010/21-010R	QX33-010R11	QX61-250/61-250/33-010R	QX61-250/53-063R
QX42-025R12-1	QX82-160/52-063R	QX31-020/21-010R09	QX22-008/22-008R09	QX41-063/43-032R08
QXT32-016/32-016/09	QXP23-005R	QX21-016/21-012R06	QX51-125/32-016R	QX41-040/34-012R-Y
QX51-125/52-050R	QX61-250/43-032R83	QX53-050/52-063R	QX21-016/23-006/23-006R-O	QX32-012R06

三、Product Advantages

1. High Precision Floating Side Plate vs Traditional Fixed Plate Gear Pump Designs

Unlike ordinary fixed side plate gear pumps with large internal leakage, the Gear Pump QX33-016R18 adopts dynamic floating compensation structure. It automatically compensates gear clearance under varying working pressure, effectively reducing internal leakage and boosting long-term volumetric efficiency under fluctuating load.

2. Compact Integrated Control Valve Option

Built-in optional integrated flow/overflow valve block on pump body, no extra pipeline assembly needed. Simplifies whole hydraulic station layout, cuts installation space and pipeline leakage risk, ideal for compact machinery space arrangement.

3. Premium Wear-resistant Materials for Long Service Life

Gear & shaft: Alloy structural steel, carburized quenching + high precision grinding;Side plate: Copper alloy wear-resistant composite material, anti-abrasion under high pressure;Seals: Imported nitrile rubber composite, rated -20℃ to +110℃, leak-free at max 250bar;Bearings: High load roller bearings, stable operation at 2800r/min, over 12000-hour service lifespan.

4. Low Noise Optimized Tooth Profile

Optimized involute gear tooth profile design decreases gear meshing impact noise, running noise ≤72dB at rated rotation speed, fits indoor equipment and environmental-sensitive working scenarios.

四、Model Code

The model code QX33-016R18 has clear coding logic for global purchasers to confirm configuration without professional hydraulic knowledge:

QX33: Core high-pressure gear pump series code, distinguishing from low-pressure KP/KP series gear pumps;

016: Displacement of 16ml/r, suited for small&medium flow industrial hydraulic requirements;

R: Clockwise rotation (R=right rotation; L=left rotation for alternative option);

18: Standard European SAE mounting flange specification, interchangeable with mainstream imported brand installation dimensions.

As core model of QX33 series, QX33-016R18 is optimized for medium-high pressure industrial scenarios, stable performance on engineering machinery and injection molding equipment, widely purchased by global hydraulic suppliers and equipment manufacturers.

五、Product Structure

1. Core Architecture: External Meshing High-pressure Gear Structure

Different from low-pressure cast iron gear pump structure, Gear Pump QX33-016R18 uses high-precision alloy steel gear + floating side plate core combination, realizes automatic clearance compensation under pressure.

2. Optional Integral Valve Structure

Built-in overflow/load sensing valve integrated on pump housing, save external valve block and connecting tubing.

3. Material Configuration Upgrade

Alloy quenched gear + copper composite side plate + imported oil seal, outstanding pressure resistance and anti-wear property.

4. Compact Integrated Layout

Short overall length, convenient for narrow installation space of mobile machinery and compact hydraulic power unit.

六、Application Scenarios

Main Matching Fields for QX33-016R18 Gear Pump

1.Construction machinery: Mini excavators, road rollers, small loaders, aerial work platforms

2.Plastic industry: Small&medium injection molding machine hydraulic power system

3.General industry: Hydraulic press, hydraulic lifting station, packaging machinery

4.Agricultural equipment: Large tractor, harvester hydraulic driving system

5.Special equipment: Light-duty marine auxiliary hydraulic unit