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Company

Koyo Seiko was founded in 1921 by Mr. Ikeda. In the decennia that followed it has become one of the world’s leading manufacturers of bearings and automotive steering systems.

Koyo Seiko was founded in 1921 by Zenichiro Ikeda. In the decennia that followed it has become one of the world’s leading manufacturers of bearings and automotive steering systems.

With the merge of Koyo Seiko Co., Ltd. and Toyoda Machine works, Ltd. on January 1, 2006 JTEKT was founded. Nowadays with a Head Office in Kariya, Japan, JTEKT has global operations in Europe, Asia, U.S and Latin America.

With activities focused on four major areas: bearing, steering, driveline and machine tools JTEKT aims at meeting the high expectations of its customers and winning the trust of the society. Highest business standards and a firm technological base combined with the engineering capabilities are JTEKT’s foundation of growth and innovation. JTEKT’s ambition is to be among the world's top 10 automotive parts suppliers. In its four product divisions it will therefore continue to pursue excellence in product quality and reliability. JTEKT is presently the leading steering systems maker in Japan and the No. 2 maker worldwide. Through consistently high levels of product quality and performance, JTEKT has earned the respect and trust of automakers and industrial manufacturers around the world. It was equally the first maker to develop electric and hydroelectric power steering systems.

Koyo Bearings changing to JTEKT Bearings on April 1st 2022

Koyo is the former brand of JTEKT Bearings. JTEKT engineering and manufacturing capabilities range from super large bearings with outer diameters of seven meters to miniature bearings with inner diameters as small as one millimeter. Utilizing new materials and the latest in manufacturing technology, JTEKT has developed hybrid ceramic bearings and a variety of extreme special environment bearings to meet the increasingly severe and demanding requirements of modern industries. JTEKT stands at the forefront, as a technological leader in the world bearing industry.

JTEKT owns and operates eighteen bearings plants in seven countries and 6 R&D Technical Engineering Centers on three continents. Koyo offers innovative solutions to both original equipment manufacturers and aftermarket end users focusing on key markets such as automotive, agriculture and construction, heavy industry (steel & wind mill), gear, reducer, electric motor and general machinery.
The JTEKT brand has established itself with automakers and industrial manufacturers around the world and has attained ISO/TS 16949 certification at all of our bearing manufacturing and sales facilities.

Others

In addition, JTEKT utilized the technical base established through the four main products areas to develop complementary lines, such as factory automation, various precision instruments, heat treatment furnaces, electronic devices and others. For additional information on JTEKT operations, visit our corporate website at: www.jtekt.co.jp/e

FAQ

What is a bearing?

A bearing is a moving device that supports rotational movement between a stationary part and a rotating part. There are several types of bearings like slide, magnetic and rolling bearings. Koyo bearings are “Rolling Bearings” Rolling bearings have a long service life, high interchangeability and is power saving. The rolling elements of the bearings are assembled between inner and outer rings with or without cage. With this structure, a smooth rolling motion can be realized during operation. The great advantages of rolling bearings are:

Low starting friction
Ability to support both radial and thrust load and high speed rotation
Easy to handle and maintained
Interchangeable and easy acquirement (global normalization & standardization)
Can operate in extreme environments (high and low temperatures)
Simple methods of grease lubrication

Bearings are critical elements in all types of machinery and products. You can find them for example in automobiles, airplanes, home appliances but also in equipment for malting steel and semiconductors.