HGP Series External Gear Pumps
The HGP series external gear pump is a hydraulic power component specifically designed for industrial applications. It features a classic external gear structure, with high reliability, wide adaptability, and long lifespan as its core advantages. Its compact design and precision manufacturing process make it an ideal power source for construction machinery, metallurgical equipment, hydraulic systems, and other fields, especially suitable for complex working conditions requiring medium-to-high pressure and high flow.
- Precision Meshing Technology
- Gears are made from high-strength alloy steel treated with carburizing and quenching, combined with an ultra-fine grinding process. This ensures a meshing clearance of ≤0.02mm, reducing internal leakage, and achieving a volumetric efficiency of over 95%.
- Optional involute/double circular arc tooth profiles balance noise and pulsation, adapting to different application needs.
- Low-Friction, Long-Lasting Sealing
- Equipped with a multi-layer composite material shaft seal and self-adaptive end face compensation structure. It has a temperature resistance range of -20℃ to 120℃ and strong anti-contamination capabilities, operating stably with a filtration precision of 10μm, extending lifespan by 30%.
- Construction machinery: Hydraulic power units for excavators, enabling precise flow control.
- Shipbuilding heavy industry: Hydraulic systems for deck machinery, with salt spray corrosion-resistant design.
- Intelligent manufacturing: High-frequency start-stop scenarios in automated production lines.
The high-pressure gear pump uses a high-grade aluminum alloy body and is equipped with oil-less bearings and Viton oil seals. It can operate normally in both forward and reverse directions under high temperatures and pressures without leakage, offering superior high-temperature resistance.
The high-pressure gear pump employs a dual-pump collaborative design, integrating two independent pump bodies. This allows it to simultaneously provide stable flow to multiple hydraulic circuits, optimizing system efficiency and ensuring uniform, continuous fluid delivery, adapting to the precise control needs of multi-circuit hydraulic systems.
Our gear pumps feature an oil-less bearing structure design, ensuring stable operation at pressures above 210 bar. This design also maintains internal lubrication within the pump, guaranteeing minimal wear and a longer service life.
When used with hydraulic motors, electric motors, and similar equipment, we recommend using flange-type gear pumps with a parallel key shaft for greater installation flexibility.
The double high-pressure gear pump utilizes two independent pump chamber designs, capable of providing constant flow to two separate hydraulic circuits. This is particularly suitable for high-load conditions and extreme situations, ensuring smooth operation of the hydraulic system.
For hydraulic systems with limited space, a double pump can be chosen. It integrates two gear pumps into a single unit, occupying less space while operating collaboratively for higher efficiency.
For hydraulic systems with relatively simple functions, where requirements are straightforward and typically involve a single flow output for a specific operation, a single gear pump can be chosen.
