POM (polyoxymethylene) enjoys great popularity among plain bearing manufacturers and users alike. … or to stick to the potato example: the chips and boiled potatoes. PA66 and POM – the most common representatives Nevertheless, to get an idea of the differences within the most commonly encountered plastics for plain bearings, let’s take a closer look at some of them. (Despite all the drama required for an exciting intro, the majority of these questions in bearing technology might, of course, be answered probably via an early squeaking somewhere in the machine) In case of doubt, the wrong plastic will be responsible for tens of thousands of customer complaints and ruined companies or even human lives. Both potato salad and potato soup fill you up. This makes the decision all the more difficult. The characteristics according to which the various options must be selected are of decisive technical and economic importance. Of course, in practice it is more complex and serious. But then I still have to weigh things up: fried potatoes? Potato soup? Potato dumplings? Potato casserole? Potato salad? Which plastic to use for plain bearings? PEEK? Or POM? PA66 with 30% fibreglass? Or without? The agreement on “potatoes” limits the possibilities by about 50%. It would be great if the question could be broken down to “potatoes or noodles”. As an apt comparison, my daily favourite question comes to mind: “What do we want to cook today?”. Once the first question “plastic or metal” has been answered in favour of plastics, one is often just as smart as before.

Plain Bearings Which plastic for plain bearings? POM, PA66 and PEEK in comparison Lars Butenschön | 20.

Peek plastic