1907	Founded by Hokkaido Colliery Steamship Company and the British firms Sir W.G. Armstrong, Whitworth & Co., Ltd. and Vickers Sons and Maxim, Ltd. The headquarters and factory are located in Muroran, Hokkaido.
1915	The headquarters is moved to Tokyo.
1920	The Hiroshima Plant is established with the purchase of Hiroshima Seisakusho Co., Ltd.
1936	Construction of the Yokohama Plant is completed and goes into operation.
1950	The Japan Steel Works, Ltd. is dissolved and reestablished.
1969	Offices are established in New York, Dusseldorf, and Tehran.
1975	Offices are established in Los Angeles, Houston, and Singapore.
1978	Japan Steel Works America, Inc. is established in the United States.
1983	Relocation of Yokohama Plant is completed. The Beijing Office is established. The company is awarded the Deming Application Prize.
1988	Fine Crystal Co., Ltd. is established.
1990	JSW Plastics Machinery, Inc. is established in the United States. (merged into Japan Steel Works America, Inc. in 2017)
1992	JSW Plastics Machinery (S) Pte. Ltd. is established in Singapore. (company name is changed into The Japan Steel Works (Singapore) Pte. Ltd. in 2014)
1994	ISO 9001 and 9002 certification is acquired.
1997	JSW Plastics Machinery (H.K.) Co., Ltd. is established in Hong Kong.
1998	ISO 14001 certification is acquired.
2000	JSW Plastics Machinery (Taiwan) Corp. is established in Taiwan.
2003	JSW Plastics Machinery Trading (Shanghai) Co., Ltd. is established in China. (merged into JSW Machinery Trading (Shanghai) Co., Ltd. in 2014)
2005	The Shanghai Office is established.
2006	Tahara Machinery Ltd. is acquired.
2007	The company marks the centenary year of its founding. The headquarters is moved to Osaki in Tokyo.
2008	JSW Machinery Trading (Shanghai) Co., Ltd. is established in China. Alliance with Meiki Co., Ltd. begins.
2009	Japan Steel Works India Private Limited is established in India.
2010	JSW Machinery (Ningbo) Co., Ltd. is established in China.
2012	Japan Steel Works Europe GmbH is established in Germany.
2014	JSW AFTY Corporation is established.
2015	SM Platek Co., Ltd. in South Korea is acquired.
2019	GM ENGINEERING Co., Ltd. is acquired. Nichiyu Machinery Co., Ltd. is acquired.
2020	Meiki Co., Ltd. is merged into the company. Japan Steel Works M&E, Inc. is established. Nichiyu Machinery Co., Ltd. is merged into the company.