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Couplings provide accurate measuring results

Backlash-free, torsionally rigid ROBA®-DS shaft couplings for measuring flanges in dynamometers

Based on the tried and tested, backlash-free and torsionally rigid ROBA®-DS construction series, mayr® power transmission offers shaft misalignment compensation couplings which are specially tailored to the high requirements placed on them in measuring flanges. They create ideal prerequisites for accurate measuring results and protect the bearings installed in the shaft train against wear.

Torque measuring flanges represent the core of modern test benches. Even in high performance and high-speed applications, they supply accurate and reliable data. Here, however, the measuring result is always only as good as the shaft misalignment compensation coupling used, as shaft couplings are of decisive importance in order to minimise the disturbance variables affecting the measuring flange. Such radial, angular and axial shaft misalignments occur in almost all applications between the input and output sides.
mayr® power transmission therefore provides compensating couplings which are specially tailored to the requirements of modern measuring flanges.

The ROBA®-DS disk pack couplings transfer the torque backlash-free and with extreme torsional rigidity, and compensate for radial, axial and angular shaft misalignments. They thus not only ensure precise measurement results, but also protect the bearings installed in the shaft train against unnecessary loads. On the ROBA®-DS couplings, the nominal torques stated in the catalogue can be used without any restrictions. A reduction of nominal torque due to offsets, load complexes or balance requirements is not required.

The challenge of high-speed applications

The robust couplings are robust and have a high performance density, and feature, in addition to their quiet running properties and low mass moment of inertia, a high balance quality. In this way, the standard constructional designs of the ROBA®-DS coupling cover, depending on the construction size, a speed range from 8,000 to 18,000 rpm, and are balanced to a balance quality of G 2.5 (reference speed 3,000 rpm). In the case of the high-speed constructional design, on which the individual parts are produced with extremely high accuracy (quality IT5) and reduced axial and shaft run-out tolerances, speed values of up to 30,000 rpm are permitted. The balance quality of the coupling is G 2.5 at a reference speed of 5,000 rpm.
Different coupling construction designs and flexible combination options permit the integration of the measuring flanges into almost any test bench and drive constellation.

 

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