Sound power levels
There’s a good reason why the Noiseless-Plus series of planetary gearheads was given this name: Measurements in the  certified noise laboratory confirm top values for smoothness  and noise reduction for the system. These exemplary sound levels are achieved through the combination of modified tooth design and precision manufacturing of the gearhead parts.

Radial loads
Thanks to their ingenious design, Noise-lessPlus planetary gearheads are also  excellently suitable for extreme radial loads. Double ball-bearing output shafts ensure the required load capacity even at very high speeds. There is no need for counter-bearing of the output shaft in the application.

Reduction comparison
NoiselessPlus planetary gearheads make reductions up to 21:1 possible in the one-stage version. This is significantly more than any other comparable product can offer – these achieve maximum reductions of 10:1. The two-stage versions of NoiselessPlus can even achieve reductions of 231:1, whereas the two-stage technologies of competitors can only realise maximum reductions of 70:1. The reductions offered as standard for NoiselessPlus are harmoniously graded from 4.33 to 231:1. Further reductions can be realised for special applications.

Gearhead stages
NoiselessPlus gearheads are excellently prepared to cope with the high speeds in the first stage and the large torques in the output stage. Planetary wheels made of high-grade plastic guarantee optimum noise reduction during operation. The helical teeth ensure even, flowing contact and thus enable especially high load transfer coupled with excellent smoothness.

The bores of the bearings in the plastic planetary wheels have cross-grinding which ensures optimum embedding of the lubricant over the whole gearhead service life.

The complete gearhead is encased in a  single-piece planetary housing made of turned, solid aluminium. The teeth are slotted rather than cast, for maximum precision. The result: unique smoothness and minimum wear.

Material combinations
Flexible and versatile: We design your gearhead solution tailor-made to your requirements thanks to our modular principle . We adapt your NoiselessPlus system exactly to your smoothness, torque or power requirements by replacing individual components by modules made of other materials. We can realise customer-specific special solutions from 500 units per year.

Motor attachment possibilities
Usually, you will receive NoiselessPlus drives as complete units made up of motor and gearhead. The teeth of the sun wheel of the first stage (pinion) are milled directly into the motor shaft (pictured on the left). This makes a compact gearhead design possible, as well as particularly low-noise rotation. If you would like to use other motors, you can connect these to the gearhead using bonded or push-on  pinions. In the case of bonded pinions,  fitting takes place directly at ZEITLAUF® to ensure a permanent connection and optimum rotation properties (pictured centre). The push-on pinion is fixed on the motor shaft using a clamping ring and connected with the motor via a connecting flange (pictured on the right).

Attachment possibilities for individual solutions
Usually, NoiselessPlus gearheads transfer torque through output shafts with feather key connection (DIN 6885, Form A, pictured on the left) or face (pictured in the centre). Thanks to the production of output shafts made of special case-hardened steel, both feather key groove and face are particularly wear-proof. The use of special output shafts is also possible (pictured on the right), e.g. with double faces, offsets, (thread) bore holes on the end and circumference, holes or serration. We can also react flexibly to segment, centring and housing form, too.