NMB Minebea traces its origins to the establishment of Nippon Miniature Bearing Co., Ltd. in 1951 as Japan's first specialized manufacturer of miniature ball bearings. Over subsequent decades, the enterprise expanded aggressively through organic innovations and strategic cross-border acquisitions, later merging with Mitsumi Electric Co., Ltd. to form MinebeaMitsumi Inc. This historical evolution transformed the company into a massive multinational manufacturing powerhouse specializing in ultra-precision machining and advanced electronics.