Amatsuji Steel BALL MFG. Co., Ltd.

Amatsuji Steel BALL MFG. Co., Ltd. (AKS Ball) is a Japanese company that manufactures high-precision steel balls for rolling bearings. Its main products are used in the automotive industry, aircraft industry, and industrial machinery worldwide. The company was founded in 1920 and incorporated in 1933. It operates factories in Japan, the UK, Indonesia, Poland, and China.

The company started manufacturing bicycle steel balls in 1920 in Juso, Osaka. In 1933, it was reorganized as a corporation with capital of 500,000 yen and began manufacturing bearing steel balls. It was listed on the Tokyo and Osaka stock exchanges in 1949. In 2006, it became a group company of NSK Ltd. and was delisted.

• Steel balls for rolling bearings

  High-precision, high-reliability steel balls made from high-carbon chromium bearing steel.

• Stainless steel balls

  Steel balls with excellent corrosion resistance made from stainless steel (hardened or non-hardened).

• Ceramic balls

  Ceramic balls made from non-oxide and oxide materials, with excellent heat resistance, wear resistance, and corrosion resistance.

• Other balls

  Various balls such as brass balls and nylon balls.

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5. Amatsuji Steel BALL MFG. Co., Ltd. (Japan)