Koyo Bearings was founded in 1921. It is a Japanese company manufacturing research and development-oriented integrated functional products with 6,557 employees is one of Japan's four major bearing production groups, with the world's top production and control equipment, in Japan has the country's sub-tokyo, Nara, Yoshida, Kewbridge, Takamatsu, Tokujima and Kessam and other eight production main factories, (all through ISO9001 certification), overseas across Europe, Several production sites and research institutes in Asia, North and South America.

KOYO bearing leading products are: rolling bearings, deep trench ball bearings, high-precision bearings, cardigan bearings, seat bearings, flat ball bearings, short cylindrical roller bearings, linear rail bearings, ball rod bearings, micro-small linear rail bearings, cross-roller rail bearings, reciprocating rotating bushing bearings, roller slip group bearings, cam driven bearings.