Sumitomo QT Pump | QT43-20F, QT62-125F, QT23-QT63 | Servo Injection Molding Machine Gear Pump

Sumitomo QT Series High-Performance Servo Gear Pumps

Product Overview: The Sumitomo QT Series is the global benchmark for silence and durability in hydraulic systems for servo-driven Injection Molding Machines (IMM). This selection features a comprehensive displacement matrix from the compact QT23/QT32 to the high-capacity QT62/QT63, including flagship models QT43-20F-A and the high-flow QT62-125F-BP-Z with pressure cut-off. Specifically engineered for the high dynamic response of servo motors, QT pumps utilize a patented internal gear principle to deliver near-pulsation-free flow even at continuous pressures of 320 Bar. It is the primary power choice for elite IMM brands like Haitian and Yizumi to achieve precision control and energy efficiency.

Key Technical Advantages:

• Ultra-Quiet Architecture: The unique internal gearing minimizes impact during meshing, resulting in decibel levels significantly lower than traditional pumps, optimizing the workshop environment.

• Low Pulsation & Precision Molding: Exceptionally low flow and pressure ripples ensure stable injection speeds and superior part molding accuracy.

• Seamless Servo Integration: Designed with low rotational inertia and excellent high-speed response, perfectly matching the rapid start-stop, reversal, and variable speed requirements of servo motor drives.

• High-Pressure Longevity: Constructed with reinforced materials and specialized heat treatment, ensuring an exceptionally long service life under 24/7 high-intensity production cycles.

• Elite Energy Efficiency: Maintains high volumetric efficiency even during pressure-holding phases, effectively reducing system heat and overall energy consumption.

Detailed Models & Parameters:

• Core Series: Sumitomo QT Series Internal Gear Pump.

• Model Keywords: QT23, QT32, QT33, QT42, QT43, QT52, QT53, QT62, QT63.

• Featured Models: QT43-20F-A, QT62-125F-BP-Z, QT53-63F-A.

• Displacements: Ranging from 5.0 cm³/rev to 125 cm³/rev.

• Pressure Ratings: Continuous rated pressure up to 250 – 320 Bar (3600 – 4640 PSI).

• Design Features: SV (Servo Optimized); BP (With Pressure Cut-off); Z (Reinforced Sealing).

• Target Applications: Precision servo IMMs, hydraulic press brakes, die-casting machinery, and servo-hydraulic units.