Mag Ias Gmbh

Jürgen Reingen

Matthias Weber

Leo Schreiber

Wolfgang Hafner

Achim Fleischer

Emanuel Gross

Andreas Grützmacher

Hans Kuhn

Emanuel Groβ

Maarten Brussee

Friedhelm Setzer

Johannes Widmann

For friction reduction in sliding bearing, it is known to structure the sliding surface () by ECM by introducing a plurality of microscopic small indentations (). According to the invention it is proposed in particular in the same process step to smoothen also the intermediary spaces () between the indentations (), thus to remove the tips of the surface profile.

Sliding surface

In order to reduce friction of a crank shaft during operation by a large amount with low complexity through structuring sliding bearing surfaces () of the crank shaft through controlled introduction of microscopically small indentations () it is proposed for the center bearings and the crank bearings to only structure highly loaded portions of the bearing surface in circumferential direction and also in axial direction since this is already difficult to achieve in view of the operating gap towards the tool that only has a size of a few &#x3bc;m.

Structuring of sliding surface portions

Growing community of inventors

Göppingen, Germany

Jürgen Reingen