Sakai Sakai Co., Ltd. began manufacturing and selling belt-type continuously variable transmissions in 1950, and in 1986 it also incorporated the production of precision couplings into its business. During the period of rapid economic growth, a lubrication-free transmission was adopted as a countermeasure against fine vibration wear, and maintenance-free transmissions were realized. Subsequently, Sakai Sakai developed a series of couplings, precision correction shaft couplings based on this theory of fretting wear countermeasures, and was widely praised in the semiconductor and liquid crystal related equipment markets for its characteristics. In addition, the performance of leaf spring couplings that support automatic control is rapidly improving, for example, precision spring couplings are becoming more and more popular in the field of machine tools. Rigid couplings, precision fixed shaft couplings, the pursuit of precision in tightening, in the field of high-precision positioning equipment has attracted much attention.
The SAKAI precision coupling series is a coupling with flexibility, high rigidity, low inertia, and high-precision rotary transmission capabilities. SAKAI Belt Type CVT has smooth shifting, reliability, durability, and instantaneous constant power characteristics for use in automatic conveyor lines and harsh environments that do not allow 24-hour downtime Based on the basic concept of "providing excellent functional elements", SAKAI has been developing and manufacturing products that meet the needs of high-precision and high-quality conduction equipment. They will continue to make unremitting efforts to create and provide original and highly reliable products according to the needs of customers, aiming to be a company that contributes to the development of society.
In 1945, former president Tetsunosuke Sakai founded Sakai Iron Works.
In 1950, the company acquired a patent for an automatic anti-slip mechanism for belts, and began manufacturing and selling continuously variable transmissions.
In 1960, it was reorganized into Sakai Manufacturing Co., Ltd，ltd.
In 1969, the U.S. patent was obtained for the fretting wear prevention mechanism.
In 1986, the UC series of calibration couplings was developed and started to be sold.
In 1987, Sakai patented a completely dry roll-key system in the United States and West Germany.
In 1992, the UA-B series precision guiding coupling was developed and launched.
In 1993, the UA-C S series of precision guiding couplings was developed and began to be sold. UA-B series precision guiding couplings have been selected as good design products by the international ** and the Ministry of Industry.
In 1994, the SAKAI pneumatic transmission control system was selected as a featured invention by the Science and Technology Agency. The precision guiding coupling won the Aichi Prefecture Invention Award.
In 1995, the UA-C series precision guiding coupling received the Special Award from the Director-General of the Small and Medium Business Agency of the Ministry of International Trade and Industry.
In 1996, Yo***aka Sakai was appointed President and Representative Director.
In 1997, the company began to sell LC series precision spring couplings.
In 1998, the sales of LA series precision spring couplings began. The LAD-C series precision spring coupling was selected as a good design product. Started sales of the T series of belt-driven continuously variable transmissions.
In 1999, LCS-T series precision spring couplings were selected as goods design products.
In 2005, sakai was certified as an Aichi brand company. The UA-C series precision guiding coupling won the Good Design Long Life Design Award.
In 2006, the RA-C series precision fixed couplings were sold.
In 2000, SAKAI obtained ISO9001 certification for the international quality management system (head office, factory).
In 2008, the Tokyo and Osaka offices obtained ISO9001:2000 certification.
In 2010, the LAD-C series precision spring coupling won the Good Design Long Life Design Award.
In 2012, Sakai began selling TCD-B, TCS-B, TAD-C, TAS-C series precision spring couplings.
In 2014, Yoshitaka Sakai was appointed Chairman of the Board of Directors, and Takayuki Sakai was appointed President and Representative Director.
In 2017, the TCFF series precision spring coupling won the Encouragement Award at the Nagoya City Industrial Technology Grand Prix. The LAD-12C and LAS-12C precision spring couplings were selected as goods design products.
In 2019, sakai was selected as one of the "300 Small and Medium-sized Enterprises" by the Ministry of Economy, Trade and Industry. Link: "300 SMEs".
In 2023, Sakai received the "Japan Society for Precision Engineering Manufacturing Award" at the Japan Society for Precision Engineering Fall Meeting