Gearheads Technology − short and to the point
Planetary Gearheads Planetary gearheads are particularly suitable for transferring high torques. As a rule, the larger gearheads come with ball bearings at the gearhead output. – For transmission of high torques up to 180 Nm – Reduction ratio of 4:1 to 6285:1 – Outside diameter 4 − 81 mm – High power packed into extremely small spaces – High reduction ratio in an extremely small package – Concentric gearhead input and output Ceramic versions Through the use of ceramic components in gearheads, the wear characteristics of critical components can be significantly improved. This results in the following advantages compared to full-metal gear- heads: – Longer service life Noise mainly occurs in the input stage of the gearhead. The following measures help reduce noise: – Lower input speeds and thus smaller relative velocities between tooth flanks – Input stage with plastic gears – Using a Koaxdrive gearhead The low-noise maxon Koaxdrive combines worm and planetary gearheads. In the first stage, a separately mounted worm drives the three angled planetary wheels. Strain Wave Gearheads Strain wave gearheads make use of the principle of elastic deformation and the flexibility of one component, known as the flexspline. The centerpiece of the strain wave gearhead is the wave generator, an elliptical shaft. This shaft deforms the flexspline, a thin-walled flexible ring that meshes with a rigid outer ring (circular spline). – Higher continuous torques – Higher short-term torques – Higher input speeds Koaxdrive Noise reduction
Ultra-performance gearhead The Ultra Performance (UP) gearhead uses rolling bearings in all stages. This results in a very high efficiency and thus in a higher load capacity, as well as backdrivability even with high reductions. High-power gearheads In particular, high output torques in the out- put stage of planetary gearheads can be achieved through the following measures: – Use of ceramic components – 4 instead of 3 planet gears in the output stage – Additional motor-side support of the output stage – Reinforced output bearing
Gearheads with reduced backlash The reduction in backlash is achieved through preloading of the planet gears in the output stage. Despite the wear that occurs during operation, the gearhead backlash remains constantly low, unlike for gearheads in which the backlash reduction was achieved by low-tolerance manufac- turing and material pairing. Sterilizable gearheads Sterilizable gearheads are distinguished by the use of stainless steel and special lubri- cants. The bearing of the output shaft and the connection to the motor are designed so that fluid leaking into the gearhead is inhibited.
These, in turn, mesh with a specially toothed ring gear. All subsequent stages are structured like a standard planetary gearhead. – Low noise – High reduction ratio in the first stage – Other properties as for planetary gearhead
This deformation generates radial motion that is converted into rotational motion. – Zero backlash and precise
– High torsional rigidity – High reduction ratios – Large hollow shaft possible
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