Conical-roller bearing used for vehicle drive shaft in oil-filled housing has outer and inner rings and rollers of steel with low oxygen content and hard carbonitrided layer containing austenite

摘要

In a bearing with outer and inner rings with conical races, a large ribbed area on the wider side, conical rollers and a spacer keeping the rollers at a certain distance apart in the peripheral direction, the outer and inner rings and rollers are all made from steel with a specific oxygen content and have a carbonitrided outer layer with a specific carbon content, and austenite content. In a bearing with outer and inner rings with conical races, a large ribbed area on the wider side, conical rollers and a spacer keeping the rollers at a certain distance apart in the peripheral direction, the outer and inner rings and rollers are all made from steel with an oxygen content <= 9 ppm and have a carbonitrided outer layer with a carbon content /- 0.80 wt.%, Rockwell hardness HRC /- 58 and austenite content of 25-35 vol.%.