Press Release
PI.4.17.EN
Mauerstetten, 16.02.2016
Long version
Couplings provide accurate measuring results
Backlash-free, torsionally rigidROBA®-DS shaft couplings for measuring flanges in dynamometers
Essential components for torque measuring flanges in test benches are shaft couplings, which reliably compensate for any shaft misalignments. In this way, they ensure accurate measuring results and also protect the bearings installed into the shaft train against wear. Based on the tried and tested, backlash-free and torsionally rigid ROBA®-DS construction series, mayr®power transmissionoffers compensating couplings which are specially tailored to the high requirements placed on them in measuring flanges.
Short development times, an improved degree of efficacy or increased energy saving potential – the requirements on test benches are consistently increasing. In this way, the performance requirements are increasing on torque measuring flanges as the core of moderntest benches, which themselves have to supply precise and reliable data even in maximum performance and high-speed applications. 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. Suchdisturbance variables frequently occur due to alignment errors in the drive line. Therefore, radial, angular and axial shaft misalignments occur in almost all applications between the input and output sides. Even a high-precision alignment of the shaft train with state of the art laser alignment devices can only assist to a certain extent. In addition, the misalignments cannot be completely eliminated due to the existing tolerances in the measurements of the components used and the external influences such as temperature. Therefore torsionally rigid shaft misalignment compensation couplings are used together with the measuring flange. mayr®power transmissionoffersROBA®-DS compensating couplings, which are especially tailored to the requirements placed upon them by modern measuring flanges.
High performance density and backlash-free
TheROBA®-DS disk pack couplings 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 unnecessaryloads and therefore against unnecessary downtimes and costs. 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 couplings are compact, and simultaneously unite high performance density with completely backlash-free function. They transfer torques up to the nominal torque completely backlash-free and with a consistently high torsional rigidity. The stated shaft misalignments can be utilised in total to 100% without affecting the transmittable torque.
Tailored to test bench requirements
The couplings are particularly robust and durable, 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 theROBA®-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 ofG 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 to30,000 rpm are permitted. The balance quality of the coupling isG 2.5 at a reference speed of 5,000 rpm.
The connection of the ROBA®-DS couplings and the measuring flanges on the shaft train are generally conducted backlash-free via high-quality shrink disk hubs. Different coupling construction designs especially tailored to the differing requirements of the test benches and flexible combination options also permit the integration of measuring flanges into almost any test bench and drive constellation.
Image material
Fig.1:
File: F-4-27-Bild1.jpg
Backlash-free and torsionally rigid ROBA®-DS disk pack couplings compensate for radial, axial and angular shaft misalignment. They thus not only ensure precise measurement results, but also protect the bearings installed in the shaft train against wear.
Fig.: mayr®power transmission
Fig.2:
File: F-4-27-Bild2.jpg
On the ROBA®-DS disk pack coupling, the nominal torques stated in the catalogue can be used without any restrictions. They transfer torques up to the nominal torque completely backlash-free and with a consistently high torsional rigidity.
Fig.: mayr®power transmission
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, 87665 Mauerstetten
Tel. 08341/804-0, Fax 08341/804-421
E-Mail:
About Mayr power transmission
The family-run company Mayr power transmission (founded in 1897) is a leading manufacturer of safety brakes, torque limiters and shaft couplings. These products are primarily designed for application in electrically driven machines and systems. They can be found, for example, in filling plants, in machine tools, in packaging and printing machines as well as in elevators, in wind power plants and in stage technology. Currently, approximately 600 employees work at the headquarters in Mauerstetten, in the Allgäu region. Worldwide, Mayr power transmission has more than 1000 employees. With production plants in Poland and China, sales subsidiaries in the USA, in France, Great Britain, Italy, Singapore and in Switzerland as well as 36 additional country representatives, the company is active around the globe.
Press Contact:Simone Dauer
Communications
Tel. 08341/804-2332
Fax 08341/804-492332
E-Mail:
Press Release
PI.4.17.DE
Mauerstetten, 16.02.2016
Short version
Couplings provide accurate measuring results
Based on the tried and tested, backlash-free and torsionally rigid ROBA®-DS construction series, mayr® power transmission offers shaft misalignmentcompensation 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 transmissiontherefore 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 torsionalrigidity, 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 flangesinto almost any test bench and drive constellation.