7 machine parts, namely, ball and roller bearings and plain bearings, namely, bearings for linear motion such as ball boxes, rail guides, roller- and ball rotating contact shoes; rolling type gear units for machines, namely, ball screw drives, planetary rolling drives and helical rolling drives; machine parts, namely, ball transfer units, roller casters, rolling bearing balls, roller bearing rollers, bearing sleeves and bearing housings as well as rolling bearing cages and bearing seals; machine parts, namely, shaft bearings, shaft support bearings as well as shaft blocks, gear wheels; tolerance rings; equipment for moving and removing work pieces to and from work piece processing machines, namely, tables and sleds; mechanically, pneumatically and hydraulically driven manipulating machines for gripping, holding, depositing, rotating, pushing and removing of work pieces treated by machine tools; pneumatically, hydraulically and/or mechanically powered actuators for machine tools and work piece feeding machines; switching linkages and shifting levers for working machines, parts made of plastic for metal working machines and stationary engines