Gear Oil Pump PGH Series PGH4-30/050RE11VE4

Hengmeisi factory's durable Gear Oil Pump PGH Series PGH4-30/050RE11VE4 designed for heavy-duty hydraulic systems in industrial fields is a high-pressure internal gear oil pump independently. It perfectly inherits the advantages of the PGH series and is optimized for high-pressure, large-displacement working scenarios, with excellent stability, wear resistance and load-bearing capacity, becoming the core power component for global heavy industry customers.

Core Features

High-Pressure, Large-Flow Design: Rated pressure 315bar, peak pressure 350bar, rated displacement 50 cm³/rev, volumetric efficiency up to 95%.

Internal Gear Meshing Technology: Reduces flow pulsation (≤3%) and operational noise (58dB at 1m), providing stable and quiet hydraulic output.

Durable Materials: Pump body of QT600-3 ductile iron, 20CrMnTi alloy steel gears hardened to HRC60, high-pressure mechanical seals for reliable long-term operation.

Optimized Bearings: High-precision sliding bearings with pressure compensation extend service life up to 15,000 hours.

Self-Priming Capability: Up to 1.0m height prevents dry operation and adapts to complex oil supply conditions.

Comparative Features

Different from external gear pumps like AZPF and GSP2, the Gear Oil Pump PGH Series PGH4-30/050RE11VE4 is designed for heavy-duty, continuous-operation hydraulic systems. With rated pressure up to 315bar and peak pressure 350bar, it offers compact structure, low flow pulsation, high volumetric efficiency, and strong overload capacity. Independently developed with advanced international technology, it focuses on high pressure, large displacement, and long durability, while supporting flexible configuration to meet diverse heavy industry needs. The internal gear meshing technology reduces noise and internal leakage, making it widely used in metallurgy, mining, and port machinery.

PGH4-30/050RE11VE4 Model Interpretation & Core Features

The Gear Oil Pump PGH Series PGH4-30/050RE11VE4 has clear and professional implications, which directly reflects its structural characteristics and application positioning: 

PGH4 represents the 4th generation PGH series internal gear pump; 

30 indicates the standard mounting flange specification (ISO 3019/2); 

050 refers to the rated displacement of 50 cm³/rev, which is suitable for large-flow hydraulic system needs; RE11 denotes the keyway drive shaft with standard rotation direction; 

VE4 stands for the high-pressure resistant mechanical seal configuration, which can effectively adapt to high-pressure working conditions and prevent oil leakage.

This model is specially designed for heavy-duty hydraulic systems that require large flow and high pressure, with a compact structure that saves installation space, and the integrated oil port design simplifies pipeline connection, making it easy to install and maintain even in complex industrial environments.

Structure & Material Highlights

Compact Installation: Standard ISO 3019/2 flange, integrated oil ports for simplified pipeline connection.

Wear Resistance: Carburized and precision-ground gears and high-strength ductile iron body withstand vibration, impact, and harsh working conditions.

Advanced Sealing: High-pressure mechanical seals operate reliably in wide temperature ranges (-25℃–100℃) and diverse hydraulic oils.

Safety Features: Built-in pressure relief valve and wear-resistant bushing protect the pump and reduce maintenance costs.

Application Scenarios & Versatility

Focusing on heavy industry fields, PGH4-30/050RE11VE4 is widely used in various large-scale hydraulic systems that require high pressure and large flow. 

It is especially suitable for metallurgical machinery (such as steel rolling mills, blast furnaces), mining machinery (such as excavators, crushers), port machinery (such as cranes, container handlers), heavy-duty engineering machinery and large hydraulic stations, providing stable and reliable power support for the hydraulic system. 

With the continuous development of intelligent manufacturing and industrial internet, this model is also compatible with intelligent hydraulic systems, supporting real-time monitoring of working parameters, which helps customers realize intelligent operation and maintenance. 

The model has strong compatibility and interchangeability, which can be directly replaced with the original PGH series model of the same specification, without modifying the pipeline and installation structure, greatly reducing the replacement cost and time. 

At the same time, it supports multi-pump series and parallel combination, which can be combined with other PGH series models to form a large-flow hydraulic system, meeting the needs of complex heavy-duty working conditions.

Why Choose Hengmeisi?

Wuhan Hengmeisi Hydraulic Co., Ltd., as a leading China manufacturer, factory and supplier of hydraulic components, has rich experience in the R&D and production of PGH series internal gear pumps. 

We have a professional R&D team and advanced precision processing equipment, and establish a strict quality control system from raw material procurement to finished product delivery, ensuring the quality of each PGH4-30/050RE11VE4 model. 

Referring to the quality standards of international leading brands such as Rexroth, we implement strict testing procedures, including high-pressure test, flow test, noise test, durability test and sealing test, and only products that fully meet the design standards can be delivered to customers. 

As a factory-direct supplier, we eliminate intermediate links, offering competitive prices while ensuring product quality, and provide fast delivery (3-5 days for regular PGH4-30/050RE11VE4 models), one-stop technical support and perfect after-sales service.

Quality Control & After-Sales Commitment

We attach great importance to product quality and after-sales service, and provide a 12-month quality guarantee for PGH4-30/050RE11VE4, covering all manufacturing defects. Our professional technical team has more than 15 years of experience in hydraulic industry, which can help customers select suitable models, solve various application problems in the use process, and provide personalized technical guidance and on-site debugging services. We also provide lifelong technical support and accessories supply, ensuring that customers can use the product with confidence. Whether it is small-batch sample orders, bulk procurement or OEM customization, we can provide flexible solutions to meet the diverse procurement needs of global customers.

FAQ

Q1: What makes PGH4-30/050RE11VE4 superior to conventional gear pumps?

A1: Its internal gear meshing design minimizes pulsation and noise, while high-pressure mechanical seals and durable materials ensure long-lasting performance under extreme industrial conditions.

Q2: Can it handle continuous heavy-duty operation?

A2: Yes, sliding bearings with pressure compensation support high radial and axial loads, and the pump’s service life reaches 15,000 hours, exceeding industry standards.

Q3: Is installation complicated for industrial systems?

A3: No, the pump features a standard ISO flange and integrated oil ports, enabling straightforward installation and maintenance without modifying existing pipelines.

Q4: How does it improve hydraulic efficiency?

A4: Optimized gear profiles and high volumetric efficiency (95%) reduce internal leakage, energy waste, and noise, providing stable power for large-flow, high-pressure applications.