Exhibit 13.2

CERTIFICATION

Pursuant to 18 U.S.C. § 1350, the undersigned officer of Nidec Corporation (the “Company”) hereby certifies, to such officer’s knowledge, that the Company’s annual report on Form 20-F for the year ended March 31, 2004 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:  July 26, 2004

/s/  Yasunobu Toriyama

Yasunobu Toriyama

Executive Vi ce President, Chief Financial and Accounting Officer and Director