Oil free components

Diamor® coated sliding components in oil free environments

Diamor® coated gears for dry running gearboxes (Company Harmonic Drive AG)
© Fraunhofer IWS Dresden
Diamor® coated gears for dry running gearboxes (Company Harmonic Drive AG)
Diamor® coated form shoulder for hose bag machines (Company GVL mbH)
© Fraunhofer IWS Dresden
Diamor® coated form shoulder for hose bag machines (Company GVL mbH)

There are many applications of wear surfaces that do not allow the presence of lubricants for function, hygienic or other reasons. Here low friction wear protective coatings offer a serious alternative. Low friction and nonstick properties are paramount. Carbon based coatings are predestined for such applications. The hardest of DLC coatings, ta-C, presents the best solution.

The performance of various DLC coatings was compared within the EU project “Oil-free powertrain”. The superior performance of Diamor® coatings for such applications was clearly demonstrated. An industrial application was tested that involved the non-lubricated running of a drilling head gearbox. A lifetime of 5 x 107 load cycles was achieved.

Additional examples of successful Diamor® applications include components for the food packaging industry (e.g. form shoulders in packaging machines), the pharmaceutical industry (e.g. pill press stamps) and the textile industry (e.g. thread guides).