OLEOPHILIC BEARING WITH SURFACE-MODIFIED PART MADE OF STAINLESS ROLLING BEARING STEEL

摘要

The invention relates to the lubrication of a bearing (18a, 18b), in particular of a rolling bearing. The aim of the invention is to render the bearing impervious to a lack of maintenance lubrication or irregular maintenance lubrication while simultaneously maintaining the mechanical performance of the bearing. This is achieved in that at least one part of the bearing is at least partly provided with an oleophilic adhesion-promoter layer. The adhesion-promoter layer binds a lubricant layer of the bearing to the part provided with the adhesion-promoter layer. In the process, the adhesion-promoter layer is bound to an elementary iron-free surface of a body of the bearing part. The free iron is removed from the bearing part body surface preferably using nitric acid, a chromate solution, and/or citric acid. Overall, the treated part has an oleophilic corrosion-protection adhesion-promoter layer. The bearing according to the invention is characterized primarily by its use in pressure-operated devices, in particular in turbine handpieces used by dentists, because until now there has been a particularly high loss of the lubricant layer when operating such devices.