Revision of Earnings Forecasts of Minebea.Co.,Ltd

Revision of Earnings Forecasts for the Interim Period Ended September 30, 2004 and for the Full Year Period Ending March 31, 2005 Revision of Non-consolidated Earnings Forecasts (1) Interim Period£¨April 1, 2004 - September 30, 2004£©¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ ¡¡ Net Sales Ordinary Income Net Income Previous forecast £¨£Á£© 92,000 2,900 1,300 Revised forecast £¨£Â£© 93,363 2,745 801 Variation £¨£Â−£Á£© 1,363 −155 −499 Percentage change 1.5% −5.3% −38.4% Previous first-half results 92,482 5,782 1,480 (Millions of yen) (2) Full Year Period (April 1, 2004 - March 31, 2005) There are no revisions to the non-consolidated earnings forecasts for the full-year period. 3. Reasons for the Revision The above revisions are due mainly to 1) higher operating expenses and production integration costs incurred in our information motors businesses; 2) the consequence of a sharp rise in costs accompanying the shift of our PC keyboard manufacturing operations from Thailand to Shanghai; and 3) a delay in cost reduction responding to a significant fall in production of spindle motors resulting from inventory adjustments in the hard disk drive industry. Note: The above earnings forecasts are based upon information available as of the announcement date of this material. The Company's actual results may differ from these forecasts, depending on future various business factors.