Rolling bearing

Details Rolling bearing Rolling bearing

2005-05-27

2008-10-14

Tsang-Foster, Susy (Department: 1795)

Metal treatment

Having portions of differing metallurgical properties or...

Roller bearing element

C384S625000, C384S912000

Reexamination Certificate

active

07435308

ABSTRACT:
An inner ring2and an outer ring3of a rolling bearing1are made from steel that contains carbon in the range of 0.65 to 1.25% by mass, silicon in the range of 0.7 to 2.5% by mass, manganese in the range of 0.1 to 1.5% by mass, chromium in the range of 0.5 to 3.0% by mass, 1.5% by mass or less of molybdenum, 9 ppm or less of oxygen, 30 ppm or less of titanium, and 80 ppm or less of sulfur, and whose rating number of the Thin type A series inclusion is 1.5 or less and that of the Heavy type A series inclusion is 1.0 or less when the rating numbers are measured by a method stipulated in ASTM E45.

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