Measurement and/or monitoring device for bearing wear - has transparent element whose wear is signalled by light guided by light conductors

摘要

The device monitors the wear of bearing (10) supporting a shaft (12). At least one transparent element (20) is in contact with the shaft (12), so that it is abraded by a movement of the shaft in the bearing when it is worn. This wear is detected by a light beam (26) so directed through the element (20) on the surface (22) subject to wear, that the reflected radiation (30) changes the illumination of >=1 detector (76, 86), as in 2817769. At least one first light conductor (74) is between the light source (72) and the light beam (26), source (70), and >=1 second light conductor (80, 90) guides the reflected light (30) to the detector (76, 86).