Gleitlager fuer Tiefbohrwerkzeuge

摘要

The sliding-contact bearing for deep-drilling tools, in particular direct cutter drives, comprises a track ring (3; 4) and a supporting ring (1), of which the supporting ring (1) has bearing segments whose sliding bodies are supported on the sliding surface of the track ring (3), and of which the track ring (3; 4) has an annular support body (5; 14), e.g. of steel, and prefabricated shaped bodies (7, 8; 16, 17) which are attached to this support body (5; 14) and are made of a hard (at least on the top side) wear-resistant bearing material. In this arrangement, the sliding surface of the track ring (3; 4) is formed by a multiplicity of shaped bodies (7, 8; 16, 17) which are let flush into the surface (9) of the support body (5; 14) side-by-side in a mosaic shape and, with their surfaces, together define an essentially closed two-dimensional annular path. ……