Patent ID: 11965556
Assignee: NSK LTD.
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F  G

Claim 0:
1. A method for measuring indentation resistance of a rolling bearing in which a plurality of rolling elements are freely rollably held between raceway rings each having a raceway surface subjected to machining, the method comprising:
obtaining a first curve indicating a yield shear stress in a depth direction of the raceway surface of a material forming the rolling bearing in a state before the raceway surface is subjected to the machining,
a second curve indicating a static shear stress in the depth direction of the raceway surface in a state in which the raceway surface is subjected to the machining, and
a third curve indicating a static shear stress in the depth direction of the raceway surface in a state in which the rolling elements are in contact with the raceway surface and a static load is applied to the raceway surface; and

obtaining a correlation between an area A and an indentation depth of the raceway ring by defining a region surrounded by exceeding the first curve and the second curve and falling below the third curve as the area A.