This document is about QPH 2 high pressure internal gear pump product manual. It introduces the product's technical parameters, such as rated displacement volume, continuous operating pressure, peak operating pressure, cut-in pressure peak, maximum speed, rated speed, operating viscosity, starting viscosity, operating medium, maximum medium temperature, minimum medium temperature, maximum ambient temperature, minimum ambient temperature, maximum admission pressure, minimum admission pressure, weight, filtration grade, efficiency, noise and so on.
This document provides technical data for the Bucher QPH 2 and QPH 3 series of high pressure internal gear pumps. These pumps feature constant displacement volume and are designed for industrial hydraulic applications, offering low noise and long service life.
| Rated Size | NG 004 to NG 064 |
|---|---|
| Continuous operating pressure | 250 to 330 bar |
| Peak operating pressure | 280 to 350 bar |
| Max. speed | 1,800 to 4,200 rpm |
| Operating viscosity | 10 - 300 mm²/s |
| Max. medium temperature | 80 °C |
| Operating medium | HL— HLP DIN 51 524 part 1/2 |
| Degree of filtration | Class 20/18/15 |
The maximum medium temperature is 80 °C.
The minimum admission pressure is 0.8 bar absolute (0.6 bar for start).
The operating viscosity range is 10 to 300 mm²/s.