Bearing for a turbocharger rotor bearing

摘要

The outer ring (6) of the bearing is in one piece and has two tracks (7,7a) for the two rows of rollers (8,8a). The inner ring (9) of one row of rollers extends axially under the second row of rollers and supports the inner rings (10,11). An annular duct (12) on the inner ring (11) is connected to at least one groove (14) leading out of the bearing. Ducts (15,15a) lead from the annular duct to both tracks so as to lubricate the ducts or the rows of rollers. The numbers of ducts and grooves differ.