Backlash-free torque transmission
The couplings compensate for radial, axial and angular shaft misalignment by means of the flexible disk packs. This way, they protect the bearings from unwanted wear and tear and prevent unnecessary downtimes and costs. In order to achieve backlash-free torque transmission, the disks in the fixing area are treated with a special blasting procedure. The ROBA-DS disk pack couplings are temperature and wear resistant and transmit torque with very high torsional rigidity. Therefore, they are suited for applications in extreme ambient conditions.
Mayr power transmission has extended the standard hubs for shaft attachment by a radially divisible hub, a so-called split clamping hub, also for sizes 3 to 15. At permitted speeds of 3000 rpms, these sizes for shaft diameters of 45 to 79 mm cover torques from 35 to 150 N m. The half-shells provide ease of installation, even in difficult ambient conditions. Therefore, the hubs are used preferably in applications, in which the drive aggregates such as the motor and the gearbox must not be moved after the positioning and aligning for coupling installation. These hubs are also recommended for large shaft distances, for example for cardan shafts in linear actuators, as in these cases the coupling is installed last and therefore has to be easy to install.
High performance density
Installation is carried out radially: To do this, the coupling is brought to the shafts and pre-assembled with the axially moveable half-shells. Here, it is important that the markings on the half-shells and on the hub bodies overlap. Then, the cap screws must be tightened evenly and in several sequences to the required tightening torque. The ROBA-DS servo couplings are available as double-jointed couplings with a connection plate or a variable-length sleeve.
Mayr