Non-destructive sizing method for ball bearing flaking

Issue title: Selected Papers from the 15th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2011)

Article type: Research Article

Authors: Tsunokai, Manabu^{a; *} | Takase, Kentaro^a | Kayata, Ryo^a | Nakano, Kenzo^b

Affiliations: [a] IIU corp., Tokyo, Japan | [b] Tohoku-Electric Power Co. Inc., Sendai Miyagi-ken, Japan

Correspondence: [*] Corresponding author: Manabu Tsunokai, IIU corp., 10F ImonIkenohata Bldg. 2-7-17 Ikenohata, Taito-ku, Tokyo 110-0008, Japan. Tel.: +81 3 5814 5350; Fax: +81 3 327 0682; E-mail: tsunokai@iiu.co.jp

Abstract: This paper proposes a new non-destructive method for evaluating the size of the flaking in ball bearing with an electromagnetic sensor. This method focuses on the variation of the magnitude of the characteristic frequency of a defect on the outer race. Through the presence of local maximums and minimums, the length of the flaking is evaluated while the bearing is in operation. The applicability and accuracy of this method is confirmed through several accelerated aging tests. It is shown that the growth of the length of the flaking in ball bearings is linear.

Keywords: Bearing defect, flaking, non-destructive diagnosis, electromagnetic sensor

DOI: 10.3233/JAE-2012-1484

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 39, no. 1-4, pp. 369-373, 2012