This document provides a description of the internal gear pump series QX, including its advantages, technical data, and performance graphs. The pump has main characteristics for different pressure ranges.
This document provides technical data for the Bucher QX series of internal gear pumps, representing the 5th generation of the product line. Key advantages include a sound pressure level below 57 dB(A), volumetric efficiency up to 98%, and suitability for use with variable speed drives and various fluid types including fire-resistant fluids.
The datasheet details main characteristics for three different pressure ranges, listing displacement, flow rate, maximum operating pressure, torque, and input power for specific model codes. It also includes performance graphs for noise levels and efficiency, along with dimensions and ordering codes for single, double, and triple pump configurations.
| Sound pressure level | < 57 dB (A) |
|---|---|
| Volumetric efficiency | up to 98% |
| Fluids | HLP mineral oils to DIN 51524, Part 2 |
| Minimum fluid cleanliness | NAS 1638, Class 9 or ISO 4406, code 20/18/15 |
| Operating viscosity | 10 to 100 mm2/s |
| Fluid temperature range | -20 °C min. to 80 °C max. |
| Maximum inlet pressure | 1.5 bar absolute |
They feature an extremely long service life, low noise, high efficiency, and are suitable for variable speed drives.
Yes, they can be used with fire-resistant fluids (HFB, HFC and HFD = QXV), fuels, biodegradable and low-viscosity fluids.
The minimum fluid cleanliness is NAS 1638, Class 9 or ISO 4406, code 20/18/15.