株式会社日精NISSEI CORPORATION.成立于1942年，是日本知名的综合传动产品制造商之一，为日本公众上市公司。

NISSEI日精电机产品包括各类小型齿轮减速机、各类压铸件、直线动作机器，齿轮。小型齿轮减速机功率范围15W-2.2KW，齿轮换向器，100W～2000W伺服电机用减速机，100W～750W伺服电机用高精确小型减速机。NISSEI日精电机产品具有体积小巧，安装灵活，高效节能，低噪音，长寿命及保奍方便等特点。广泛应用包装机械，塑料机械，传送机械，电子装配等工业领域。

NISSEI began producing sewing machine parts in 1942. The technology refined in the course of the business enabled the company to begin production of small fine pitch gears in 1955. NISSEI launched the production of die-cast parts in 1966, and developed a reducer in 1969 (a long-cherished product, developed on an in-house basis). The company has expanded its business by increasing the types of reducers and improving gear production capacity and technology.