- 1909
- Tenryu Tekko was founded as a limited partnership for repairing and remaking circular saws in Nakanomachi-mura, Hamana-gun.
- 1910
- July
- The corporate name was changed to Tenryu Seikyo (limited partnership company) and the new factory was built in 545-2 Hashiwa, Wada-mura, Hamana-gun.
- 1913
- October
- Tenryu Saw Mfg. Co., Ltd. was established.
- 1918
- March
- Tokyo branch was opened in Fukagawa, Tokyo. (Closed in April, 1945)
- 1919
- July
- Osaka branch was opened in Kita-ku, Osaka.
- 1919
- September
- Akita branch was opened in Akita City.
- 1920
- April
- Two engineers were sent to England to study circular saw blade manufacturing methods for preparation of the initial launch of domestic production, in Japan.
- 1922
- Japan's first domestically produced "Star brand" circular saw blade was introduced to the market.
- 1930
- August
- Tenryu was awarded the national "Superior Domestically Produced Product Award" for their saw blades for woodworking.
- 1937
- November
- Osaka Branch moved to Taisho-ku, Osaka. (Closed in October, 1944)
- 1946
- August
- Tokyo Office opened in Nihonbashi-ku now known as Chuo-ku.
- 1948
- January
- Osaka Office was opened in Nishi-ku, Osaka.
- 1950
- December
- Tenryu's plant was designated a Japanese Industrial Standards (JIS) plant for circular saws for woodworking.
- 1957
- October
- The Tokyo office, Osaka office, and Akita office are the new names for the offices of the Tokyo, Osaka, and Akita branches.
- 1960
- March
- Production of circular saws for power tools started.
- 1962
- October
- Production of diamond saw blanks started.
- 1965
- May
- The production of diamond saw substrates begins.
- 1972
- April
- Kumamoto Sales Office opened in Kumamoto. (Closed in April 1987)
- 1972
- December
- Affiliated companies, Pass Co., Ltd., a band saw manufacturer, and Kaken Co., Ltd., a diamond cutting saw manufacturer were established.
- 1973
- October
- Hokuriku Sales Office was opened in Toyama.
- 1974
- February
- Joint venture company, Young Chang Saw & Knife Co., Ltd., a diamond saw blanks manufacturer was established in Inchon, Korea.
- 1975
- November
- Production of saw blades for disassembling Shinkansen trains started.
- 1976
- May
- Giken Co., Ltd., an affiliated company for manufacturing band saw processing machines and related equipment was established.
- 1982
- August
- Sales of metal saws started.
- 1984
- January
- Headquarters and plant moved to current location in Asaba, Fukuroi, Shizuoka Prefecture.
- 1984
- May
- Production of carbide tipped saw blades for metal cutting started.
- 1988
- November
- Tenryu Saw Mfg. Co., Ltd. registered with the over-the-counter section of the Tokyo and Nagoya Stock Exchanges.
- 1991
- August
- Osaka Branch moved to Higashi Osaka.
- 1992
- February
- Joint venture with Young Chang Saw & Knife Co., Ltd., in Korea was dissolved.
- 1992
- April
- Kaken Co., Ltd., Giken Co., Ltd. and Pass Co., Ltd. were merged with Tenryu.
- 1993
- October
- Hokkaido Sales Office opened in Asahikawa.
- 1994
- July
- Tenryu (China) Saw Mfg. Co., Ltd., a Chinese saw blade manufacturer and distributor entered into a joint venture with Young Chang Saw & Knife Co., Ltd. in Korea. This joint venture was established in Langfang, Hebei, China.
- 1995
- April
- Tokyo Branch moved to Narashino, Chiba Prefecture.
- 1996
- May
- Tenryu America, Inc. was established in Melbourne, Florida, USA for selling saw blades and other products.
- 2000
- July
- Hokkaido Sales Office is closed and merged with the Akita Branch.
- 2000
- September
- The joint venture between Tenryu Saw Mfg. Co., Ltd. in Japan and Young Chang Saw & Knife Co., Ltd. in Korea was dissolved. Tenryu China became a wholly-owned subsidiary.
- 2001
- December
- Tenryu America, Inc. moved to Florence, Kentucky.
- 2002
- January
- Longlian Tools Corporation, a cutters manufacturer and distributor was established in Langfang, Hebei, China.
- 2004
- August
- Tenryu Saw (Thailand) Co., Ltd. was established in Bangplee Industrial Estate, Samutprakarn, Thailand.
- 2006
- October
- Tenryu America, Inc. moved to Hebron, Kentucky.
- 2007
- September
- Headquarters and factory obtained ISO-14001 certification.
- 2008
- January
- Tenryu Saw (Thailand) Co., Ltd. moved to Chonburi.
- 2009
- September
- Tenryu Europe GmbH was established in Dusseldorf, Germany for selling saw blades and other products.
- 2010
- January
- The main office of Tenryu Europe GmbH was moved to Aalen, Baden-württemberg, Germany.
- 2011
- July
- Tenryu America, Inc. Houston Sales Office was established in Houston, Texas.
- 2011
- September
- Tenryu Saw India Private Limited was established in Neemrana, Rajasthan, India.
- 2011
- October
- Tenryu (China) Saw Mfg. Co., Ltd. Suzhou Branch was established in Suzhou, Jiangsu.
- 2012
- March
- Tenryu Saw (Thailand) Co., Ltd. was moved to Rayong.
- 2012
- April
- Tenryu Saw India Private Limited moved to Gurgaon, Haryana.
- 2012
- September
- Tenryu Saw de Mexico, S.A. de C.V. was established in Silao, Guanajuato, Mexico.
- 2013
- February
- Hokuriku Sales Office moved to Hariwaranakamachi, Toyama, Toyama Prefecture.
- 2013
- July
- Listed on the Tokyo Stock Exchange JASDAQ (Standard) due to the integration of the spot market of the Osaka Stock Exchange and the Tokyo Stock Exchange.
- 2013
- October
- Tenryu Saw Mfg. Co., Ltd. marked its 100th anniversary.
- 2017
- October
- Omuta Factory was set up in Omuta, Fukuoka-Pref. as a new production facility.
- 2017
- November
- Longlian Tools Corporation moved to Dalian.
- 2018
- June
- Tenryu (Dalian) Saw Mfg. Co., Ltd., a saw blade manufacturer and distributor was established in Dalian, Liaoning, China.
- 2022
- April
- Due to changes in the market classification of the Tokyo Stock Exchange, transferred to the Standard Market of the Tokyo Stock Exchange.
- 2022
- May
- TENRYU EUROPE GMBH moves to new premises in the same city (Aalen, Baden-Württemberg) due to business expansion.
- 2024
- August
- Giken Factory moves to the main plant at the headquarters.
- 2025
- January
- TENRYU AMERICA, INC. HOUSTON SALES OFFICE relocated to Katy, Texas, to strengthen sales activities and increase efficiency.
