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QT33
Green Hydraulic
QT33
Standard export carton/plywood case
Yes
ISO9001，CE
• Industrial • Energy • Government (Non Aerospace) • HVAC • Mobile • Natural Resources • Transportation (Non Aerospace)
1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry
Key Shaft and Spline shaft
1 set
Product Description
The QT33 is a high-performance, low-noise internal gear pump engineered for industrial hydraulic systems that demand exceptional precision, long service life, and whisper-quiet operation. Featuring a unique "straight-line conjugate" gear profile technology, the QT33 is specifically designed to provide ultra-stable pressure output and high efficiency even at peak pressures. It is the premier choice for injection molding machines, die-casting equipment, and servo-hydraulic systems where green energy efficiency and noise reduction are critical.
Ultra-Low Noise Operation:
The QT33 utilizes an advanced internal meshing design that eliminates the "trapped oil" phenomenon common in external gear pumps. This results in minimal pressure pulsation and a significantly lower decibel level, making it ideal for factory environments that require a quiet and stable workspace during continuous operation.
Dual Pressure Compensation Technology:
Equipped with both radial and axial pressure compensation mechanisms, the QT33 automatically optimizes internal clearances. This ensures nearly 100% volumetric efficiency by minimizing internal leakage, even during low-speed operation or under fluctuating temperature conditions.
High-Pressure Stability and Reliability:
Built with a high-strength cast iron housing and precision-heat-treated internal components, the QT33 is engineered to handle continuous operating pressures of up to 3,625 psi (25 MPa). Its robust mechanical design ensures stability under sudden pressure spikes, providing reliable power for high-cycle industrial tasks.
Superior Contamination Tolerance and Longevity:
The internal gear structure is inherently more resistant to fluid impurities than piston or vane pumps. Combined with premium hydrodynamic sliding bearings, the QT33 minimizes friction and wear, ensuring a service life of tens of thousands of hours under heavy-duty loads.
Optimized for Servo-Hydraulic Systems:
With its low inertia and rapid response capability, the QT33 is the ideal match for modern servo-driven power units. it handles the transition from extremely low speeds (during pressure holding) to high speeds (during fast approach) seamlessly without pressure oscillations.
| Frame Size (Model) | Displacement | Rated Pressure | Max. Pressure | Rated Speed | Max. Speed | Driving Power |
| QT33-10 | 10 | 25 | 32 | 1500 | 3000 | 6.8 |
| QT33-12.5 | 12.5 | 25 | 32 | 1500 | 3000 | 8.6 |
| QT33-16 | 16 | 25 | 32 | 1500 | 3000 | 10.6 |
Applications
Plastic Injection Molding: The premier choice for servo-driven injection molding machines, where the QT33’s low-pulsation flow ensures consistent pressure for precision part forming and energy-saving performance during long pressure-holding cycles.
Die-Casting & Metal Forming: Optimized for high-pressure die-casting and stamping equipment, where its rugged internal gear design provides the rapid response and stability needed for high-frequency clamping and injection operations.
Precision Machine Tools: Widely used in CNC centers and grinding machines for hydraulic clamping, lubrication, and auxiliary functions, offering the vibration-free operation essential for maintaining high-quality surface finishes on machined parts.
Industrial Servo Power Units (HPUs): Ideal for modern, green-energy power packs, where the QT33’s ability to operate efficiently at extremely low RPMs allows for precise control of cylinders and actuators in automated production lines.
Testing & Laboratory Equipment: Frequently employed in hydraulic test benches and aerospace simulators, where the "straight-line conjugate" gear technology provides a whisper-quiet environment for operators while maintaining high-pressure output.
QT33 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.
Ultra-Low Noise: The internal meshing design eliminates the "trapped oil" phenomenon found in external pumps, resulting in virtually vibration-free and whisper-quiet operation.
Dual Pressure Compensation: It features both radial and axial pressure compensation mechanisms, ensuring the pump maintains nearly 100% volumetric efficiency even at high pressures or low speeds.
High Pressure, Compact Frame: Its high-strength cast iron construction allows it to handle pressures comparable to piston pumps while maintaining the small footprint of a gear pump.
Continuous Pressure: Up to 3,625 PSI (250 bar).
Intermittent/Peak Pressure: Up to 4,500 PSI (315 bar).
This high-pressure capability makes the QT33 ideal for high-cycle industrial machinery like injection molding and die-casting presses.
Sumitomo: QT33 Series (Direct interchange).
Rexroth: PGP Series internal gear pumps.
Voith: IPV Series.
To ensure a successful swap, verify the Mounting Flange (standard 2-bolt or 4-bolt), Shaft Type (Keyed or Spline), and Port Orientations to match your existing system.
Oil Type: Premium mineral-based Anti-Wear (AW) hydraulic fluids.
Viscosity: Standard ISO VG32 to VG46. The optimal operating range is 20 to 100 cSt for maximum mechanical efficiency.
Filtration: Cleanliness is critical for internal gear pumps. A minimum filtration of 10 microns is recommended to prevent fine particles from causing wear on the internal compensation surfaces.
Minimum Speed: 200 – 400 RPM (Ideal for servo-driven pressure holding).
Maximum Speed: Up to 1,800 – 3,000 RPM, depending on the specific model displacement.
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
Please provide the following details:
Model or displacement
Working pressure
Speed
Quantity
We will reply within 12 hours with a competitive quotation.
QT33 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.
The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.
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.
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.
Of course we can. Just send me your logo we can make it for you.
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.
