| 1690 |
Its Shikoku Besshi Copper Mine first opened. |
| 1887 |
Mining operations had expanded enough to warrant the introduction of the 'shop practices' concept as a way of manufacturing and repairing equipment and tools used at the mine. |
| 1888-11-20 |
The company is launched as a machinery production and repair shop for the Besshi Copper Mine |
| 1897-06-21 |
Incorporated as Uraga Dock Co., Ltd. |
| 1902 |
Acquires Tokyo Ishikawajima Shipyards Co., Ltd.'s Uraga Works |
| 1928 |
Name changed to Sumitomo Besshi Copper Mine, Ltd. - Niihama Works |
| 1934-11-01 |
Incorporated as Sumitomo Machinery Co., Ltd. |
| 1940 |
Name changed to Sumitomo Machinery Industries Co., Ltd. |
| 1945 |
Name changed to Shikoku Machinery Industries Co, Ltd. |
| 1948 |
Tamashima Diesel Co., Ltd. is established |
| 1949-05 |
Company stock is jointly listed on the Tokyo and Osaka Stock Exchanges |
| 1952 |
Renamed Sumitomo Machinery Industries Co., Ltd. |
| 1953 |
Tamashima Diesel Co., Ltd. is renamed Uraga Tamashima Diesel Co., Ltd. |
| 1957 |
New York office is established (currently known as SHI (USA)) |
| 1958-06 |
Company stock is listed on the Nagoya Stock Exchange |
| 1959 |
Hirozoki Co., Ltd. joins Sumitomo business alliance |
| 1961 |
Establishment of Nagoya Works |
| 1962 |
Hiratsuka Laboratory opens : Merges with Uraga Tamashima Diesel Co., Ltd. to form Uraga Heavy Industries Co., Ltd. |
| 1964 |
London office is established (currently known as SHI (Europe)) |
| 1965 |
Establishment of Chiba Works Equity investment made into Nittoku Metal Industry Co., Ltd. |
| 1966 |
Sumitomo Machinery Corporation of America (SMA) is established. Environmental Health Research Center opens in Hiratsuka |
| 1969 |
The company joined forces with Uraga Heavy Industries, Ltd., and operated under the name of Sumitomo Heavy Industries, Ltd., opening the Oppama Shipyard (Yokosuka Works) and Toyo Works |
| 1969-06 |
住友機械工業（株）と浦賀重工業（株）が合併して 住友重機械工業（株）となる |
| 1969-06 |
June - Sumitomo Machinery Industries Co., Ltd. and Uraga Heavy Industries Co., Ltd. merge to form Sumitomo Heavy Industries, Ltd. |
| 1971-08 |
住友重機械エンバイロテック（株）設立 |
| 1971-08 |
August - Establishment of Sumitomo Heavy Industries Envirotech Co., Ltd. |
| 1972-05 |
住友エール（株）（現住友ナコ フォークリフト（株））設立 |
| 1972-05 |
May - Establishment of Sumitomo Yale Co., Ltd. (currently known as Sumitomo NACCO Material Handling Co., Ltd.) |
| 1972-06 |
追浜造船所（現横須賀製造所）開設 |
| 1972-06 |
June - Establishment of Oppama Shipyard (currently known as Yokosuka Works) |
| 1972-12 |
サイクロトロン1号機納入 |
| 1972-12 |
December - Delivers the Company's first cyclotron |
| 1973-02 |
大島造船所設立 |
| 1973-02 |
February - Establishment of the Ohshima Shipyard |
| 1973-11 |
東予製造所開設 |
| 1973-11 |
廣造機（株）と日本水力工業（株）を合併し、新日本造機（株）を設立 |
| 1973-11 |
November - Establishment of Toyo Works; Kogyo Co., Ltd. is merged to form Shin Nippon Machinery Co., Ltd. |
| 1974-06 |
ドイツサイクロ社（現 Sumitomo（SHI）Cyclo Drive Germany GmbH）に資本参加 |
| 1974-06 |
June - Equity investment made into Cyclo Drive Germany (currently known as Sumitomo (SHI) Cyclo Drive Germany GmbH) |
| 1974-10 |
住友イートン機器（株）設立 |
| 1974-10 |
October - Sumitomo Eaton Hydraulics Co., Ltd. is established |
| 1975-02 |
田無にシステム研究所を設立 |
| 1975-02 |
February - Systems Research Center is established in Tanashi |
| 1975-09 |
我が国初のULCC（42万トンタンカー）進水。後に世界最大の「SEA WISE GIANT」（56万トンタンカー）にジャンボライズ |
| 1975-09 |
Japan's first ULCC (420,000 ton tanker) is launched into sea. Thereafter, the ship is enlarged into the Sea Wise Giant, the world's largest tanker at 560,000 tons |
| 1976-11 |
Malaysia Shipyard & Engineering 設立 |
| 1976-11 |
November - Malaysia Shipyard & Engineering is established |
| 1977-11 |
Sumitomo Cyclo Redutores do Brasil Ltda. （SCB）設立 |
| 1977-11 |
November - Sumitomo Cyclo Redutores do Brasil Ltda. (SCB) is established |
| 1978-05 |
韓国に東国重機工業設立 |
| 1978-05 |
May - Dongguk Heavy Industries is established in South Korea |
| 1979-03 |
因島大橋剛桁受注 |
| 1979-03 |
March - Receives orders for steel girders to be used on the Innoshima Bridge |
| 1980-03 |
SPMコーポレーション（現米州SHIプラスチックマシナリー社）設立 |
| 1980-03 |
医療診断用小型サイクロトロン開発 |
| 1980-03 |
March - SPM Corporation (currently known as SHI Plastic Machinery Inc. of America) is established |
| 1980-04 |
住友重機械鋳鍛（株）（現住友重機械ハイマテックス（株））設立 |
| 1981-04 |
世界最大16,000トンプレス完成 |
| 1982-03 |
ガスタービン搭載護衛艦1番艦「はつゆき」引渡し |
| 1982-10 |
日特金属工業（株）合併、精密事業本部（現精密機器事業部）発足 |
| 1982-12 |
新日本造機（株）を東証2部に上場 |
| 1983-04 |
住友イートンノバ（株）設立 |
| 1983-04 |
平塚研究所と環境技術研究所を統合 |
| 1984-09 |
日本初の純国産大型練習帆船「日本丸」引渡し |
| 1985-03 |
香港事務所開設 |
| 1985-06 |
中国に深国際建設機械有限公司設立 |
| 1986-10 |
住友建機（株）設立 |
| 1987-08 |
SMAの工場をニュージャージーからバージニアに移転 |
| 1987-11 |
世界最大級のリング・サイクロトロンを大阪大学より受注 |
| 1988-04 |
レーザ加工機事業に進出 |
| 1988-04 |
瀬戸大橋開通 |
| 1988-10 |
ディーゼルエンジン部門を分離、IHIと共同で（株）ディーゼルユナイテッド設立 |
| 1989-01 |
川間工場跡地にSHIリゾート開発（株）設立 |
| 1989-05 |
カナダのレーザ機器メーカー・ルモニクス社を買収 |
| 1989-09 |
練習帆船「海王丸」引渡し、横浜ベイブリッジ完成 |
| 1989-12 |
世界最小のシンクロトロン放射光（SR）発生装置完成 |
| 1990-10 |
射出成形機の販売・サービス会社の住友重機械プラスチックマシナリー（株）（旧SPM）を設立 |
| 1991-03 |
世界初の95,000トン二重構造タンカー引渡し |
| 1992-01 |
超精密平面研削盤「KSX-815」日刊工業新聞社「十大新製品賞」受賞 |
| 1992-06 |
田無に量子技術研究所を設立 |
| 1992-07 |
平塚にレーザセンター完成 |
| 1993-03 |
当社初のダブルハルVLCC引渡し |
| 1993-03 |
Delivery of the Company's first double-hull VLCC |
| 1993-04 |
玉島製造所（現岡山製造所）内に小形サイクロギヤモータ 「アルタックス®」の専用工場開設 |
| 1993-04 |
Establishment of a dedicated factory within the Tamashima Works (currently known as the Okayama works) site for the compact Cyclo Gear motor, Altax |
| 1993-06 |
世界最大級高濃度泥土圧送船「伯凌」引渡し |
| 1993-06 |
Delivery of the world's largest mud work system, the Hakuryo |
| 1993-08 |
世界最大吊橋「明石海峡大橋」補剛桁受注 |
| 1993-08 |
Receipt of orders for stiffening girders for the Akashi-Kaikyo Bridge, the world's longest suspension bridge |
| 1994-04 |
総合技術研究所設立 |
| 1994-04 |
小形サイクロ®ギヤモータ「アルタックス®」が「日経BP技術賞」受賞 |
| 1994-04 |
Main Research and Development Center is established |
| 1994-04 |
The Company's compact Cyclo Gear motor, Altax , receives the Nikkei BP Technology Award |
| 1994-08 |
東京地区8事務所が統合、本社品川区へ移転 |
| 1994-08 |
Eight offices in Tokyo are consolidated to form the Shinagawa Head Office |
| 1994-12 |
中国・天津市にサイクロ®減速機の新会社 住友重機械減速機（天津）有限公司設立 |
| 1994-12 |
Establishment of a new Cyclo Drive company, Tianjin SM Cyclo Co., Ltd. in Tianjin, China |
| 1995-01 |
東京湾アクアライン橋梁竣工 |
| 1995-01 |
Construction completed for Tokyo Bay Aqua-Line Bridge |
| 1995-05 |
世界最大級のグラブ浚渫船「東祥」引渡し |
| 1995-05 |
Delivers the Tosho, the world's largest grab bucket dredger |
| 1995-08 |
発電用ボイラ1号機納入 |
| 1995-08 |
大型試験艦「あすか」引渡し |
| 1995-08 |
Delivers first boiler machine for power generation |
| 1995-08 |
Delivers a large-scale experimental ship, the Asuka |
| 1995-09 |
カナダの関連会社 ルモニクス社 カナダ証券市場に上場 |
| 1995-09 |
シンガポールにサイクロ®減速機の新会社 東南アジア住友サイクロ社設立 |
| 1995-09 |
Lumonix Corporation, a Canadian affiliate of the Company, is listed on the Canadian Stock Exchange |
| 1995-09 |
New Cyclo Drive company is established in Singapore |
| 1995-10 |
IHIと共同で艦艇に関する合弁会社（株）マリンユナイテッド設立 |
| 1995-10 |
The Company and IHI jointly form the naval venture Marine United |
| 1996-03 |
鉄鉱石3,300T/H、石炭2,200T/Hの荷役能力を有する世界最大連続アンローダ納入 |
| 1996-03 |
Delivers world's largest continuous unloader with a iron ore and coal loading capacity of 3,300 T/H and 2,200 T/H, respectively |
| 1996-04 |
台湾にサイクロ®減速機の新会社 大同住重減速機股有限公司設立 |
| 1996-04 |
A new Cyclo Drive company, Tatung SM Cyclo Co., Ltd., is established in Taiwan |
| 1996-10 |
イギリスに欧州サイクロドライブ社設立 |
| 1996-10 |
Sumitomo (SHI) Cyclo Drive Europe, Ltd. is established in the United Kingdom |
| 1997-02 |
つくば市の全連続式大型都市ごみ焼却施設「筑南クリーンセンター」完成 |
| 1997-02 |
Construction of the Chikunan Clean Center, a large-scale, fully continuous municipal incinerator for the city of Tsukuba, is completed |
| 1997-04 |
韓国にサイクロ®減速機の新会社 SM-サイクロ・オブ・コリアを設立 |
| 1997-04 |
川間工場跡地に「シティマリーナヴェラシス」オープン |
| 1997-04 |
A new Cyclo Drive company, SM Cyclo of Korea Co., Ltd., is established in South Korea |
| 1997-04 |
City Marina Velasis opens on the former Kawama Works site |
| 1997-06 |
追浜造船所を横須賀造船所と改称 |
| 1997-06 |
Oppama Shipyard is renamed Yokosuka Works |
| 1997-10 |
練習船「青雲丸」引渡し |
| 1998-01 |
米国に射出成形機の生産会社 米国住友プラスチックマシナリーマニュファクチャリング社設立 |
| 1998-03 |
クルップ・ウーデ社とガス化炉に関し技術提携 |
| 1998-04 |
世界最長の明石海峡大橋開通 |
| 1998-05 |
電動式射出成形機SE-Sシリーズ販売開始 |
| 1998-05 |
田無製造所から岡山製造所にギヤボックス工場移転 |
| 1998-06 |
IPP用石炭火力発電設備受注 |
| 1999-03 |
兵庫県明石市の全連続式大型都市ごみ焼却施設 |
| 1999-04 |
来島海峡大橋（しまなみ海道）開通 |
| 1999-05 |
大阪製鎖造機（株）（現住友重機械ギヤボックス（株））買収 |
| 1999-06 |
執行役員制導入 |
| 1999-12 |
住重制御システム（株）設立 |
| 2000-01 |
総合技術研究所を技術開発センターに改組 |
| 2000-03 |
訓練支援艦「てんりゅう」引渡し |
| 2000-07 |
精密鍛造事業を分離し、住重フォージング（株）を設立 |
| 2000-10 |
住重ファインテック（株）設立 |
| 2000-11 |
押出成形機メーカ、シービーシーテック（株）を買収し、エス・エイチ・アイ モダンマシナリー（株）としてスタート |
| 2002-01 |
Acquires US-based APD Cryogenics, Inc. and expands cryogenic refrigeration business |
| 2002-04 |
The related engineering divisions of NKK, Hitachi Zosen, and the Company join JP Steel Plantech Co., Ltd. |
| 2002-04 |
Establishes Sumitomo Heavy Industries Advanced Machinery Co., Ltd. as a sales and service company focusing on laser products |
| 2002-06 |
The semiconductor encapsulation device business of Shibaura Mechatronics Co., Ltd. is transferred to Synex Co., Ltd. |
| 2002-06 |
The Company's paper manufacturing machinery and press machine divisions are split up; establishment of Sumitomo Heavy Industries Techno-Fort Co., Ltd. |
| 2002-07 |
Finalizes technology sharing agreement with SOPRA on high energy excimer laser-emitting devices |
| 2002-07 |
Establishes Hitachi Sumitomo Heavy Industries Construction Crane Co., Ltd. jointly with Hitachi Construction Machinery Co., Ltd. |
| 2002-11 |
Completes construction of precision machinery factory within the Yokosuka Works site |
| 2003-03 |
Completes construction of a logistics center for power transmission equipment in Shanghai |
| 2003-04 |
造船部門を分社化し住友重機械マリンエンジニアリング（株）を設立 |
| 2003-04 |
Shin Nippon Machinery Co., Ltd. becomes a wholly owned subsidiary after a stock swap |
| 2003-04 |
The shipbuilding division is split up and subsequently, Sumitomo Heavy Industries Marine & Engineering Co., Ltd. is established |
| 2003-04 |
The Company's shares are delisted from the Nagoya Stock Exchange |
| 2003-06 |
Establishes Metso SHI Co., Ltd. to focus on paper making and pulp equipment |
| 2003-06 |
Establishment of two new injection molding machine sales offices in Dalian, China and Detroit, USA |
| 2003-08 |
Establishes Sumitomo Heavy Industries Modern, Ltd. to focus on the film processing equipment business |
| 2003-09 |
The Company's shares are delisted from the Frankfurt Stock Exchange |
| 2003-10 |
Introduces a global group brand for the Power Transmission Equipment business |
| 2003-10 |
Integrates the operations of Otsuka Tech Co., Ltd. into Sumitomo Heavy Industries Finetech Co., Ltd. |
| 2003-11 |
Completes construction of new Sumitomo Heavy Industries Forging Co., Ltd. factory within the Yokosuka Works site |
| 2004-02 |
Establishes Sumitomo Heavy Industries (Shanghai), Limited |
| 2004-02 |
A portion of the Tanashi Works site is sold |
| 2005-01 |
Establishes service office for injection molding machines in Hanoi, Vietnam |
| 2005-02 |
Issues JPY 10 billion worth of straight corporate bonds with a 5-year maturity period |
| 2005-03 |
Delivers belt-based moving walkways to Chubu International Airport and the Aichi World Expo as part of the clients' universal design plans |
| 2005-03 |
Dissolves Sumiju Construction Co., Ltd. |
| 2005-07 |
The Company's cassette-based drug combining device for use in PET receives approval to be used as a medical device |
| 2005-12 |
Completes expansion of precision positioning equipment plant within the Okayama Works site |
| 2006-01 |
The Hanoi injection molding machine office is locally incorporated |
| 2006-03 |
Integrates the operations of the Research and Development Center (Niihama Factory) into Yokosuka Works |
| 2006-04 |
Absorbs the operations of Synex Co., Ltd. into the Company |
| 2006-05 |
Completes construction of a factory to manufacture motors for use in power transmission equipment in Hanoi, Vietnam |
| 2006-05 |
Transfers the operations of sMobile to Lightwell Co., Ltd. |
| 2006-10 |
SEISA Gear, Ltd. becomes a wholly owned subsidiary |
| 2006-12 |
Dissolves Sumitomo (SHI) Cyclo Drive, Europe Ltd. |
| 2007-01 |
Establishes Sumitomo Heavy Industries Environment Co., Ltd. |
| 2007-04 |
Former president Yoshio Hinoh assumes the office of chairman of the board of directors, and former executive managing director Yoshinobu Nakamura becomes president |
| 2007-05 |
Nihon Spindle Mfg. Co., Ltd. became a subsidiary. |
| 2007-12 |
Establishment of Sumitomo Construction Machinery (Tangshan) Co., Ltd. |
| 2007-12 |
Establishment of Sumitomo Heavy Industries (Tangshan), Ltd. |
| 2008-03 |
Acquired 100% ownership of Demag Plastics Group (Present Sumitomo(SHI)Demag Plastics Machinery Gmbh) |
| 2008-04 |
中期経営計画「グローバル21」スタート |
| 2008-04 |
住重テクノセンター（株）解散 |
| 2008-09 |
高精度位置決め装置累計1,000台出荷を達成 |
| 2008-10 |
韓国水原市に極低温冷凍機およびクライオポンプの拠点を開設 |
| 2009-02 |
住友重機械（唐山）有限公司 生産開始 |
| 2009-02 |
住友建機（唐山）有限公司 生産開始 |
| 2009-03 |
（株）SEN-SHI・アクセリスカンパニーを完全子会社化（現住友重機械イオンテクノロジー（株）） |
| 2009-03 |
Acquired 100% ownership of SEN Corporation, an SHI and Axcelis Company Co., Ltd. (Present SEN Corporation) |
| 2009-07 |
エス・エイチ・アイプラスチックマシナリー（株）を吸収合併 |
| 2009-12 |
住友重機械プロセス機器（株）設立 |
| 2010-04 |
住友重機械ビジネスアソシエイツ（株）設立 |
| 2010-07 |
ブラジルに減速機事業の拠点を開設 |
| 2010-07 |
タイにエネルギー環境事業の拠点を開設 |
| 2010-07 |
住友重機械工業（中国）投資公司設立 |
| 2010-10 |
日本スピンドル製造（株）完全子会社化 |
| 2011-03 |
ハンセン・インダストリアル・トランスミッションズ社を完全子会社化 |
| 2011-04 |
中期経営計画「イノベーション21」スタート |
| 2011-11 |
住友重機械ギヤモ－タ（株）設立 |
| 2012-04 |
中国に水処理事業の拠点を開設 |
| 2012-04 |
中国に建機のリース会社を設立 |
| 2012-04 |
台湾に精密事業の拠点を開設 |
| 2013-04 |
会長に中村社長、社長に別川俊介副社長が就任 |
| 2013-04 |
ロジスティクス＆パーキング事業部と住友重機械エンジニアリングサービス（株）を統合し、住友重機械搬送システム（株）を設立 |
| 2013-04 |
量子機器事業部と住友重機械テクノフォート（株）を統合し、産業機器事業部を設立 |
| 2014-04 |
中期経営計画「中期経営計画2016」スタート |
| 2014-04 |
住友建機（株）がCNH Industrial N.V.社と提携関係を強化 |
| 2015-01 |
愛媛製造所内に技術研究所棟を新設 |
| 2015-10 |
経営理念を改定 |
| 2015-10 |
住友重機械搬送システム（株）が三菱重工マシナリーテクノロジー（株）より産業用クレーン事業を譲り受け |
| 2016-02 |
上海に精密事業の拠点を開設 |
| 2016-04 |
国内最大級112MWバイオマス高混焼発電設備を受注 |
| 2016-08 |
住友重機械エンバイロメント(株)が住重環境エンジニアリング(株)を吸収合併 |
| 2016-12 |
量研機構などとの第5世代量子線がん治療装置（量子メス）の開発協力に関する協定の締結 |
| 2017-02 |
パーシモンテクノロジーズ社を完全子会社化 |
| 2017-03 |
日立住友重機械建機クレーン(株)を連結子会社化 |
| 2017-04 |
「中期経営計画2019」スタート |
| 2017-04 |
住友重機械メカトロニクス(株)を吸収合併 |
| 2017-06 |
エイメックフォスターウィラー社の循環流動層ボイラ事業を取得し、住友重機械工業のグローバル子会社としてSumitomo SHI FWを設立 |
| 2018-04 |
住重富田機器(株)および住重テクノス(株)を吸収合併 |
| 2018-04 |
日立住友重機械建機クレーン(株)を住友重機械建機クレーン(株)に社名変更 |
| 2018-06 |
Lafert.S.p.A.を完全子会社化 |
| 2019-03 |
ベトナムに減速機部品生産の第4工場を開設 |
| 2019-04 |
会長に別川社長、社長に下村真司専務が就任 |
| 2019-09 |
Invertek Drives Ltd.を子会社化 |
| 2019-12 |
Sumitomo Heavy Industries (Thailand) Ltd.設立 |
| 2020-04 |
住重プラントエンジニアリング(株)を吸収合併 |
| 2020-04 |
住友重機械ギヤモータ(株)を吸収合併 |
| 2022-04 |
会長に岡村副社長が就任 |
| 2022-04 |
(株)住重エス・エヌビジネスを吸収合併 |
| 2022-07 |
住重環境技術(株)を吸収合併 |
| 2022-12 |
住友重機械建機クレーン(株)を完全子会社化 |
| 2022-12 |
次世代陽子線治療システムを初受注 |
| 2023-01 |
住重ロジテック(株)を吸収合併 |
| 2023-01 |
Merged SUMIJU LOGITECH CO., LTD |
| 2023-07 |
Sumitomo Heavy Industries (Europe) B.V.設立 |
| 2023-07 |
Established Sumitomo Heavy Industries (Europe) B.V. |
| 2023-09 |
住重ウィル(株)設立 |
| 2023-09 |
Established Sumiju Will Co.,Ltd. |
| 2023-12 |
親子で学ぶSTEAM教育ワークショップ「やさしいミライの学校」を初開催 |
| 2023-12 |
Hosted First STEAM Education Workshop “School for a Compassionate Future” |
| 2024-01 |
「中期経営計画2026」スタート |
| 2024-01 |
住友重機械グループのパーパス策定 |
| 2024-01 |
Launced "Medium-Term Management Plan 2026" |
| 2024-01 |
Announced a Purpose of SHI Group |
| 2024-03 |
洋上風力関連の事業化に向けて「洋上風力事業推進プロジェクト」 を設立 |
| 2024-03 |
Established an Offshore Wind Energy Business Promotion Project |
| 2024-04 |
住友重機械精機販売(株)を吸収合併 |
| 2024-04 |
Merged Sumitomo Heavy Industries Power Transmission & Controls Sales Co., Ltd. |
| 2024-05 |
米国にボストンオフィスを設立 |
| 2024-05 |
Established Sumitomo Heavy Industries (USA), Inc. Boston Office, Co-Innovation Hub |
| 2024-12 |
Sumitomo Heavy Industries (India) Private Limited設立 |
| 2024-12 |
Established Sumitomo Heavy Industries (India) Private Limited |
| 2025-01 |
LASSE（Laser systems & Solutions of Europe SASU） を子会社化 |
| 2025-01 |
Acquired 100% ownership of Laser Systems & Solutions of Europe SASU (LASSE) |
