German BUCHER Hydraulic Gear Pump QXEH32-016R QXEH42-020R
This pump is a very classic and commonly used external gear pump under Bucher Hydraulic, known for its compact structure, high efficiency, and good reliability.
Detailed technical parameters and characteristics
Displacement and flow rate:
Theoretical displacement: 16 cm ³/rev (or 16 ml/rev).
Flow calculation: Flow=displacement x speed. For example, at a speed of 1500 rpm, the theoretical flow rate is approximately 16 × 1500=24 L/min.
Pressure range:
Rated pressure: usually 250 bar.
Peak pressure: typically up to 280 bar.
This makes it suitable for medium to high pressure hydraulic systems.
Speed range:
The recommended operating speed range is usually between 1000 and 3000 rpm, depending on the viscosity of the oil. The maximum speed can reach around 4000 rpm.
Volume efficiency:
Under rated operating conditions, the typical volumetric efficiency is very high, reaching over 95%, which means it has small internal leakage and high energy efficiency.
Installation method:
Equipped with standard SAE flange installation interface (specification defined by "32"), convenient for connecting with motors or other power sources.
The shaft extension form is usually a flat key or spline.
Oil port connection:
Usually with threaded oil ports (such as M thread or UNFPA thread), the specific size needs to refer to the sample, and common specifications are M18x1.5 or M22x1.5.
Medium and oil temperature:
Hydraulic oil: Mineral based hydraulic oil is recommended, with a viscosity range typically from 10 to 100 cSt.
Oil temperature: The operating temperature range is usually between -40 ° C and+100 ° C.
Key Features:
High voltage capability: suitable for demanding industrial applications.
High efficiency and low noise: The optimized gear design ensures smooth operation and lower noise levels.
Long lifespan: Adopting wear-resistant bearings and optimized side plate design reduces wear and extends service life.
Compact structure: high power density, saving installation space.
Multifunctionality: Can be used for open or closed circuits.
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