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HongKong Royal Machinery Parts Co.,Ltd. 

THK Linear Guide Bearing

In 1971, THK was established in Meguro-ku, Tokyo, under its first name, Toho Seiko Co., Ltd.
Development of "LM Guide"
LM Guide
LM Guide
In 1972, THK became the first company in the world to develop a method of linear motion with rolling contact, and began manufacturing and selling the commercialized result: Linear Motion (LM) Guides.
The Pioneer of LM Guide
Establishment of Kofu Plant in Japan
Kofu Plant in 1977
Kofu Plant in 1977
In 1977, THK's Kofu Plant -- the first full-scale LM Guide production plant -- was established. This was THK's first step in expanding production facilities.
Expanding our distribution bases to the United States and Germany
THK America,Inc.(USA)
THK America, Inc.(USA)
Believing that "good technologies can be transferred across borders, and so can the satisfaction of the efficient manufacturing these technologies bring," we decided to expand our overseas business. The 1981 founding of THK America Inc. in the United States and the founding of THK Europe in Germany the following year formed the basis of our international sales network's expansion.
Expanding manufacturing bases in Japan
Ymaguchi Plant
Yamaguchi Plant
To meet increased market demands, we established the Gifu Plant in Japan in 1984. And, we established the Mie Plant and the Yamaguchi Plant in Japan in 1985 for further enhancement of our manufacturing capacity

 "THK" stands for " Toughness," " High Quality," and " Know-how." We aim to contribute to the improvement of society and development of industry by focusing on these three principles in our technology development and product manufacturing processes. On this site, we will take the opportunity to introduce a variety of technologies and products that we have developed

A machine's moving parts can be classified as rolling, linear, or a combination of both. With the development of rolling bearings about 110 years ago, rolling contact became the standard method for accomplishing rolling motion. This brought about a great technological revolution. Rolling contact not only saved motion energy, but also kept frictional resistance to a minimum and thus greatly improved the performance of machinery. However, even though a similar development in the field of linear motion would have been ten times as valuable, linear motion through rolling contact was a long time in coming.
THK solved the problem, previously considered too difficult, of linear motion with rolling contact by applying its unique technological capabilities, and in 1972, it became the first company in the world to develop and commercialize the Linear Motion (LM) Guide. Our linear motion system enabled rapid improvements in the accuracy, speed and labor-saving potential of advanced mechatronic instruments. With THK's LM Guides, machine tools and industrial robots become capable of ultra-precise operations, and semiconductor-manufacturing devices can operate in submicron units. More recently, the system has been applied in liquid crystal manufacturing lines, railway carriages, assistive vehicles, medical equipment, skyscrapers and residences, and amusement devices. The use of LM Guides has truly expanded beyond all prior boundaries.

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