QT42-25/QT42-31.5/QT52-40 Gear pump

Sumitomo Gear pump QT32-12.5 , QT32-16 , QT42-20 , QT42-25 , QT42-31.5
Sumitomo Gear pump QT52-50 , QT52-63 , QT62-80 , QT62-100 , QT62-125 , QT31-20 , QT31-25
Sumitomo Gear pump QT31-31.5 , QT41-40 , QT41-50 , QT41-63 , QT51-80 , QT51-100 , QT51-125
Sumitomo Gear pump QT61-160 , QT61-200 , QT61-250 , QT33-12.5 , QT33-16 , QT43-20
Sumitomo Gear pump QT43-25 , QT43-31.5 , QT53-40 , QT53-50 , QT53-63 , QT63-80
Sumitomo Gear pump QT63-100 , QT63-125 , QT52-40

Product overview
QT42-25/QT42-31.5/QT52-40 series is an internal meshing gear pump product line developed by SUMITOMO Group of Japan. It belongs to a positive displacement rotary pump and is mainly used for LIQUID transportation and pressurization in the FIELD of CONSTRUCTION MACHINERY.This series adopts linear conjugated internal meshing tooth shape design, which significantly reduces noise and pressure pulsation, supports high-pressure operation (up to 300MPa), and adopts special material technology and axial and radial pressure technology. It has high wear resistance and efficient and stable operation characteristics.
Technical features
Low-noise design: The unique linear conjugated internal toothed tooth shape avoids the phenomenon of oil trapping, greatly reduces the noise and pressure pulsation of the pump, and the noise remains low when the pressure is increased.
High wear resistance: Linear conjugated gears are called “horizontal non-wear gears”, using special materials and processing techniques, and have a long service life.
Efficient and stable: The use of axial and radial pressure forms improves efficiency, the pressure can reach 300MPa, and it can operate at high pressure efficiently and stably.
Strong adaptability: especially suitable for higher speed occasions, viscosity changes have little impact on it.
Structural design: it consists of two meshing gears, the pump body and the front and rear covers to form an enclosed space, and the working volume is changed by the rotation of the gears to realize the suction and discharge of liquid.

Main model parameters
Model displacement (cm3/rev) pressure level typical application
QT42-25 25 high pressure injection molding machine hydraulic system
QT42-31.5 31.5 Hydraulic system of high-pressure die-casting equipment
QT52-40 40 high pressure hydraulic system for large construction machinery

Application scenario
Injection molding machinery: As the core component of the hydraulic system of the injection molding machine, it provides stable hydraulic power.
Die-casting equipment: the hydraulic system used in die-casting machines to withstand high-pressure working environments.
Construction machinery: used in hydraulic systems of excavators, cranes and other equipment.
Forging machinery: provide high-pressure hydraulic power for forging equipment.
Elevator equipment: Some elevator hydraulic systems use this series of gear pumps.

Product advantage
Fast response: It has high-precision action characteristics and fast response speed.
Stable output: the discharge volume is stable and the power loss is reduced.
Easy maintenance: The structure design is reasonable, and the maintenance and operation are very simple.
High efficiency and energy saving: servo system design is adopted, and the operating efficiency is high.
Widely compatible: it can replace a variety of imported brand gear pumps.