Herrenknecht

Herrenknecht AG is a German industrial manufacturer specializing in tunnel boring machines and related systems for underground construction. Its equipment is used in metro, railway, road, utility, water, mining, energy and geothermal projects. The company is headquartered in Allmannsweier, part of the municipality of Schwanau in Baden-Württemberg, and operates internationally through a broad network of subsidiaries and project organizations. Martin Herrenknecht established the business as an engineering company in 1975. It began with a small workforce and initially concentrated on mechanized tunneling technology. In 1977, the business became Herrenknecht GmbH. Its first foreign subsidiary, Herrenknecht International Ltd, was established in Sunderland, England, in 1984. The company subsequently expanded through additional subsidiaries, acquisitions and local operating structures, building a global presence in major tunneling markets. Herrenknecht's core portfolio includes shield tunnel boring machines, earth pressure balance machines, mixshields, hard-rock machines, microtunneling systems, pipe-jacking equipment and vertical shaft-sinking technology. Its machines cover very small utility and pipeline diameters as well as exceptionally large road and transport tunnels. The company also supplies tunnel logistics, service and maintenance support, spare parts, refurbishment, installation, rental and used-machine solutions. Its broader underground technology portfolio includes mining vehicles, conveyor systems, monitoring and automation equipment, shaft-drilling systems, horizontal directional drilling tools and equipment for pipeline and energy infrastructure. The company has repeatedly participated in technically demanding projects. In the late 1990s, it produced a 14.20-metre-diameter machine for the expansion of Hamburg's Elbe Tunnel, which was then the world's largest TBM. Herrenknecht equipment was also used for excavation of the Gotthard Base Tunnel in Switzerland, one of the world's longest and deepest railway tunnels. In 2009, it supplied 15.43-metre machines for major tunnel works in Shanghai, at that time another world record in diameter. In the United Kingdom, its machines were deployed for Crossrail and for the HS2 railway programme, while a large machine supplied for the Silvertown Tunnel project was described as the UK's largest TBM at the time of delivery. Herrenknecht has broadened beyond conventional tunnel construction. It acquired French tunnel-supply-vehicle manufacturer Techni-Métal Systèmes in 2012, extending its ability to provide equipment and services around the complete TBM operating environment. In 2015, it introduced horizontal directional drilling rock-cutting tools. The company has also developed semi-trenchless pipeline-installation methods and entered geothermal drilling. In 2023, it acquired a majority stake in H. Anger's Söhne Bohr- und Brunnenbaugesellschaft mbH, a specialist in drilling and geothermal equipment. It has additionally pursued offshore decommissioning applications, subsea drilling and partnerships connected with deep geothermal energy. Herrenknecht is positioned as a high-technology, engineering-led supplier rather than a mass-market equipment brand. Its value proposition rests on customized machine design, large-project execution, technical service, automation and the ability to operate in difficult ground conditions. The company serves transport authorities, infrastructure contractors, utilities, mining operators and energy developers. According to the supplied reference material, approximately 90 percent of sales were generated outside Germany in 2015, illustrating the strongly international character of its business.

Herrenknecht traces its origins to an engineering business founded by Martin Herrenknecht in 1975. The initial company had six employees and focused on the development of mechanized underground-construction equipment. In 1977, it was reorganized as Herrenknecht GmbH. The business grew from a specialist engineering operation into a manufacturer capable of designing, assembling and supporting complete tunnel boring systems. Internationalization began early. In 1984, Herrenknecht established Herrenknecht International Ltd in Sunderland, England, its first foreign subsidiary. During the late 1980s, the company became involved with Maschinen und Stahlbau GmbH of Dresden. The two businesses merged in 1988, and Herrenknecht adopted the joint-stock-company form, becoming Herrenknecht AG. Through the 1990s and 2000s, the company pursued a deliberate expansion strategy based on subsidiaries, acquisitions and local technical coverage. The aim was to provide machines and project support close to major infrastructure markets rather than operate solely from Germany. The company gained visibility through large-diameter and technically complex tunnel projects. During the late 1990s, it built a 14.20-metre-diameter TBM for increasing the capacity of Hamburg's Elbe Tunnel. The machine was considered the world's largest at that time, and the associated works were completed in 2002. Herrenknecht machinery was subsequently used for the Gotthard Base Tunnel in Switzerland. Excavation of that railway link, described as the world's longest and deepest railway tunnel in the supplied reference, was completed in 2009, approximately six months ahead of schedule. In the same year, the company delivered two 15.43-metre-diameter machines for large tunnel works beneath Shanghai, setting another reported size benchmark. During the 2010s, Herrenknecht expanded both geographically and technologically. The company supplied eight TBMs for a 13-mile Crossrail tunnel section beneath London, and its equipment was also selected for multiple tunnels associated with Britain's HS2 railway programme. In 2012, the acquisition of Techni-Métal Systèmes in France added tunnel supply vehicles and strengthened the company's ability to offer equipment surrounding the main boring machine. In 2015, Herrenknecht introduced horizontal directional drilling rock-cutting tools, extending its portfolio into another trenchless construction technique. The business also developed methods for pipeline installation and underground energy work. During the 2010s, it worked on a semi-trenchless pipeline-installation approach; by 2019, the supplied reference attributed roughly 380 kilometres of worldwide pipeline installation to this technology. Its energy-related activities include equipment for pipelines, electricity tunnels, geothermal development and other drilling applications. In May 2020, a Herrenknecht machine used at the Brenner Base Tunnel was associated with a reported 61.04-metre hard-rock advance in 24 hours. In 2021, the company delivered a large TBM for London's Silvertown Tunnel. Herrenknecht's more recent diversification has focused on geothermal and specialized drilling. In 2023, it acquired a majority stake in H. Anger's Söhne Bohr- und Brunnenbaugesellschaft mbH. This transaction added drilling-rig and well-construction expertise and supported the company's interest in automated systems for geothermal projects. Herrenknecht has also participated in subsea drilling development for offshore wind infrastructure and formed a strategic relationship with Arverne Group around deep geothermal energy through DrillDeep. By 2015, the reference material described approximately 5,000 employees, 82 subsidiaries and around 2,600 completed projects. About two-thirds of the workforce was based at the Schwanau headquarters, where hydraulic and electronic systems were installed and machines received final inspection; a further 300 employees worked at three Chinese sites. These figures show the company's combination of centralized manufacturing expertise and international project delivery. Its historical development has therefore followed two parallel paths: increasing the scale and technical ambition of TBMs, while broadening into services, logistics, mining, trenchless pipelines and geothermal drilling.

• 2023

  Majority stake in H. Anger's Söhne acquired

  [1]Herrenknechten.wikipedia.org

  Herrenknecht expanded into drilling and geothermal technology through a majority investment in H. Anger's Söhne.

• 2020

  Brenner Base Tunnel boring record reported

  [1]Herrenknechten.wikipedia.org

  A Herrenknecht TBM was used in a reported 61.04-metre hard-rock advance over 24 hours.

• 2015

  Horizontal directional drilling tools launched

  [1]Herrenknechten.wikipedia.org

  Herrenknecht introduced HDD rock-cutting tools and expanded into a broader drilling-process offering.

• 2012

  Techni-Métal Systèmes acquired

  [1]Herrenknechten.wikipedia.org

  The acquisition added French tunnel supply vehicles to Herrenknecht's equipment portfolio.

• 2009

  Major Gotthard and Shanghai achievements

  [1]Herrenknechten.wikipedia.org

  Gotthard Base Tunnel excavation was completed using Herrenknecht machinery, while the company delivered 15.43-metre machines for Shanghai.

• 2002

  Elbe Tunnel expansion completed

  [1]Herrenknechten.wikipedia.org

  A 14.20-metre Herrenknecht TBM was used for Hamburg's Elbe Tunnel capacity-expansion works.

• 1988

  Merger and conversion into an AG

  [1]Herrenknechten.wikipedia.org

  Following its merger with Maschinen und Stahlbau GmbH of Dresden, Herrenknecht became a joint-stock company.

• 1984

  First foreign subsidiary opens in England

  [1]Herrenknechten.wikipedia.org

  Herrenknecht International Ltd was established in Sunderland, marking the company's first foreign subsidiary.

• 1977

  Business becomes Herrenknecht GmbH

  [1]Herrenknechten.wikipedia.org

  The engineering company was reorganized as Herrenknecht GmbH.

• 1975

  Martin Herrenknecht establishes the engineering company

  [1]Herrenknechten.wikipedia.org

  Martin Herrenknecht founded the business in Germany with an initial workforce of six employees.

Premium, engineering-led technology supplier for mechanized tunneling, underground construction and specialized drilling.

• Tunnel boring machines

  Shield tunnel boring machines

  Herrenknecht designs and manufactures shield TBMs for transport, utility, water and road tunnels. The machines support excavation and ground stabilization while enabling the installation of precast segmental linings. Configurations are adapted to diameter, geology, groundwater pressure and project logistics.

• Shield TBMs

  EPB shields

  Earth pressure balance machines are intended for soft and mixed ground where controlled pressure at the cutterhead helps stabilize the excavation face. They are particularly relevant to urban metro and utility projects because the process can limit settlement when correctly engineered and operated.

• Shield TBMs

  Mixshields

  Mixshield machines use slurry-supported excavation for difficult ground and groundwater conditions. Herrenknecht supplies such systems for large infrastructure projects requiring precise face-pressure control, separation of excavated material and reliable operation beneath built-up areas or water-bearing formations.

• Trenchless construction equipment

  Microtunneling and pipe-jacking systems

  These smaller mechanized systems install pipelines and utilities with limited surface disruption. They combine remotely controlled excavation with pipe jacking and are used for sewer, water, cable and other underground infrastructure projects.

• Tunnel boring machines

  Hard-rock TBMs

  Herrenknecht builds machines for hard-rock excavation in railway, road, hydropower and other underground projects. Their use includes major Alpine tunneling works and other projects where cutter performance, machine robustness, logistics and continuous excavation are critical.

• Shaft construction

  Vertical Shaft Sinking Machine technology

  Vertical shaft-sinking equipment supports the mechanized construction of deep access and ventilation shafts. The technology complements horizontal tunneling systems in transport, mining, water and energy infrastructure.

• Horizontal directional drilling · 2015

  HDD rock-cutting tools

  Introduced in 2015, these tools extended Herrenknecht's portfolio into horizontal directional drilling. They are intended for trenchless installation and support the company's broader ambition to cover more stages of underground drilling work.

• 2023

  Acquire majority stake in H. Anger's SöhneM&A

  Background

  Herrenknecht was diversifying into geothermal energy and automated drilling systems.

  Action taken

  The company acquired a majority stake in H. Anger's Söhne Bohr- und Brunnenbaugesellschaft mbH.

  Aftermath

  The investment strengthened Herrenknecht's capabilities in drilling rigs, well construction and geothermal applications.

  Source

• 2015

  Enter horizontal directional drilling toolingProduct launch

  Background

  The company was extending its underground-construction portfolio beyond conventional TBMs and microtunneling.

  Action taken

  Herrenknecht launched its first HDD rock-cutting tools.

  Aftermath

  The launch enabled the company to offer equipment covering a wider portion of the horizontal drilling process.

  Source

• 2012

  Acquire Techni-Métal SystèmesM&A

  Background

  Herrenknecht sought to broaden its offering beyond the principal boring machine and cover more of the technical equipment needed around TBM operations.

  Action taken

  The company acquired the French manufacturer of tunnel supply vehicles.

  Aftermath

  The transaction expanded Herrenknecht's portfolio to include additional tunnel logistics equipment and related services.

  Source

1. 1Herrenknechten.wikipedia.org
2. 2Herrenknecht official websiteherrenknecht.com