Koyo Seiko  was established as a private company  in 1921. They initially sold imported bearings but by 1935 had begun production of Koyo branded bearings under the name Koyo Seiko Co., Ltd.

Koyo bearings can maximize productivity, whether you're moving mountains or making microchips, Meeting the challenge of demanding industrial applications is the mission of KOYO. KOYO ball and roller bearings are over 100,000 variations, nearly 80 years of manufacturing experience and three technical centers dedicated to research and new product development, Koyo is a Smart Choice.