Turbocharger bearing comprising an insulating sleeve between the inner bearing ring and the shaft

摘要

Turbocharger comprising a shaft (3), a housing (2), a turbine wheel (6) and a compressor wheel (5) mounted onto the shaft (3), at least one rolling bearing (4) located between the shaft (3) and the housing (2) and comprising an inner ring (8), an outer ring (9) and at least one row of rolling elements (10a, 10b) between raceways (8e, 9e, 8f, 9f) provided on the rings (8, 9). The turbocharger (1) comprises at least one insulation means (20) radially located between the inner ring (8) and the shaft (3), so as to thermally isolate the inner ring (8) from the shaft (3).