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Koyo Seiko (Osaka, Japan) was established as a private company by Zenichiro Ikeda in 1921. They initially sold imported bearings but by 1935 had begun production of Koyo branded bearings under the name Koyo Seiko Co., Ltd. [ 1 ] [ 2 ]
In the 1930s, a research engineer named Edmund K. Brown invented a new kind of needle bearing, which eventually became the majority of the company's business. [3] After World War II, in which the US had a large need for needle bearings for military aircraft like B-29 bombers, the production of bearings became the company's central product line.
JTEKT Corporation TYO: 6473.T is a Japanese corporation created in January 2006 upon the merger of two companies: Koyo Seiko Co. and Toyoda Machine Works.. Toyoda Machine Works, Machine tool sales for North, Central and South America, aftermarket support services, machine re-manufacturing and engineering services supplied by Jtekt Toyoda Americas Corporation H.Q. Arlington Heights, Illinois ...
NTN BEARPHITE (TM) bearings are fluid hydrodynamic bearings made from sintered material whose sliding bore surface has hydrodynamic grooves shaped like herringbones, which permit higher rotational accuracy at faster speeds. Such bearings are used in audiovisual equipment, automotive electrical equipment, household appliances and office ...
NSK Ltd. (日本精工株式会社, Nippon Seikō Kabushiki-gaisha, Japan Precision Company), also known in some markets as NSK Automation, is a large manufacturer of bearings globally and the largest in Japan. The company produces industrial machinery bearings, precision machinery and parts, and automotive bearings and components.
A jewel bearing is a plain bearing in which a metal spindle turns in a jewel-lined pivot hole. The hole is typically shaped like a torus and is slightly larger than the shaft diameter. The jewels are typically made from the mineral corundum , usually either synthetic sapphire or synthetic ruby .