Wittenstein Gearheads
(formerly Alpha Gearheads)
Wittenstein Gearboxes - PDF Catalogues
TPM+ 
More dynamic ...
Extremely good control properties are achieved in combination with high torsional rigidity and coupling-free integration between the motor and transmission. As a result, applications with a ratio of more than 50 between the external moment of inertia and the intrinsic moment of inertia can be implemented. The high coupling coefficient combined with the excellent overall level of efficiency allows natural convection cooling in situations where water cooling would usually be required.
Shorter ...
In the new TPM+, the planetary gears and AC servo motors merge to produce a single unit: the sun gear and the rotor shaft are connected without requiring a coupling. The engineers from the WITTENSTEIN group have managed to develop a sophisticated design that reduces the installation space by 20 percent. The results are impressive: Compared to conventional motor gearhead combinations, the TPM+ is more than 50 percent shorter because not a single millimetre of installation space has been wasted.
Smoother ...
In addition to the basic features with resolver, the latest generation of feedback systems by Heidenhain and Sick Stegmann have made an important contribution to reducing the overall length. The maintenance-free permanent-magnet brakes are connected close to the stator and the helical-toothed precision planetary gears ensure extremely quiet, low-vibration operation.
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