QT Series China Sumitomo Internal Gear Pump Manufacturers

QT Series Gear Pump  Overview

The QT Series is a high-performance, fixed-displacement internal gear pump engineered for precision hydraulic systems that demand ultra-low noise, minimal pulsation, and high-efficiency operation. Featuring a compact, precision-machined design with forced lubrication, the QT Series is specifically designed to deliver consistent, high-pressure performance with superior energy efficiency, making it an ideal choice for servo-driven injection molding machines, precision presses, and industrial equipment where quiet operation and reliable power delivery are non-negotiable.

Features and Benefits

• Precision Internal Gear Design:

  The QT Series utilizes a high-precision internal gear profile that eliminates flow pulsation, resulting in ultra-smooth, quiet operation compared to conventional external gear pumps. This advanced design reduces vibration and noise levels significantly, making it ideal for noise-sensitive applications while ensuring stable, consistent performance across all operating conditions.

• Low-Noise, Low-Pulsation Performance:

  Featuring a unique trochoidal gear profile and optimized flow paths, the QT Series delivers near-pulsation-free hydraulic flow. This characteristic minimizes system vibration, reduces wear on downstream components, and supports precise control in servo and closed-loop systems, improving overall system accuracy and reliability.

• High Efficiency and Energy Savings:

  Engineered with tight manufacturing tolerances and pressure-balanced components, the QT Series maintains high volumetric efficiency even at low speeds. Its low internal leakage and optimized fluid dynamics reduce energy consumption, making it a highly efficient solution for energy-conscious industrial and servo-hydraulic applications.

• Superior Pressure Capability:

  The QT Series is built to handle continuous operating pressures of up to 31.5 MPa (4,570 psi). With high-strength alloy gears, robust bearing support, and precision-cast housings, it delivers reliable, leak-free performance in high-force actuators and demanding hydraulic circuits, ensuring long service life under continuous high-pressure duty cycles.

• Compact, High Power-to-Weight Ratio:

  Despite its high-pressure capability, the QT Series features a compact, lightweight form factor. Its modular design and high power density allow for direct integration into space-constrained equipment, offering excellent power-to-weight ratios without sacrificing performance or durability.

• Wide Range of Displacements and Configurations:

  The QT Series offers a versatile range of displacements (QT2 to QT6 models, covering typical flow rates from 10 cc/rev to 100 cc/rev) and supports standard SAE and ISO mounting interfaces. It is available in single and tandem pump configurations, with multiple porting options, providing unmatched installation flexibility for specialized industrial and mobile hydraulic applications.

Model Codes

Applications

Packaging & Delivery

QT pumps are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.

QT Gear Pump  FAQ:

1. What are QT series gear pumps?

5. What hydraulic oil is suitable for QT gear pumps？

The QT series is designed for use in a wide range of applications:

• Rated Speed: 1,000–1,800 rpm (ideal for most industrial applications).

• Maximum Speed: Up to 3,000 rpm (for smaller models like QT2/QT3), down to 1,500 rpm for larger QT6 models.

It performs exceptionally well at the lower speeds common in servo systems, where maintaining high efficiency is critical.

7. Do you provide OEM or customized services?

Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.

8. How can I get a quotation quickly

Please provide the following details:

• Model or displacement

• Working pressure

• Speed

• Quantity
  We will reply within 12 hours with a competitive quotation.

Certifications & Quality Assurance

QT pumps are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.

FAQ

1.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.

2.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.

3.Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.

4.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).

The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.

The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.

Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.

All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.

To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.

Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.