State-owned engineering and defence company BEML Ltd is preparing to manufacture tunnel boring machines (TBMs) domestically as India looks to reduce its dependence on imported infrastructure equipment, particularly from China. The company plans to initially develop smaller machines used in metro rail, hydropower, irrigation and water infrastructure projects before expanding into larger and more technically complex equipment.
BEML Chairman and Managing Director Shantanu Roy said the company intends to develop machines with diameters ranging from 3.5 metres to 6.5 metres. It is also bringing in an international consultant to support the development programme, with the objective of creating proprietary Indian technology rather than simply assembling imported components. The move comes as India expands its underground infrastructure network and faces potential supply-chain risks following China’s tighter export controls on tunnelling equipment.
BEML Plans Indigenous Tunnel Boring Machine Manufacturing
BEML’s proposed entry into the TBM market is part of its broader effort to expand domestic manufacturing capabilities in strategically important engineering sectors.
The company currently operates across defence and aerospace, mining and construction, and rail and metro businesses. Its experience in manufacturing heavy engineering equipment and railway products could provide a foundation for entering the specialised tunnelling machinery market.
According to Roy, BEML will initially concentrate on machines measuring between 3.5 metres and 6.5 metres in diameter.
These smaller machines are suitable for several applications, including:
- Underground metro rail projects.
- Hydropower infrastructure.
- Irrigation tunnels.
- Water supply and sewage networks.
- Urban utility tunnels.
The company plans to gradually move towards larger machines as it develops engineering expertise and manufacturing capabilities.
BEML is also onboarding a global consultant to assist with the development process. Its stated objective is to retain Indian intellectual property rights over the technology.
This distinction is important because domestic manufacturing does not necessarily mean technological independence. Companies can assemble machines locally while continuing to depend on imported designs, components and technical expertise.
BEML’s ambition is to develop proprietary technology that can eventually support a more self-reliant Indian TBM manufacturing ecosystem.
Why Does India Depend on China for Tunnel Boring Machines?
Tunnel boring machines are specialised pieces of construction equipment used to excavate underground passages through soil and rock.
They are essential for large infrastructure projects where conventional excavation methods may be unsuitable, disruptive or less efficient.
India uses TBMs for metro rail networks, railway corridors, highway tunnels, hydropower projects and underground water infrastructure.
However, the country remains heavily dependent on foreign manufacturers for advanced tunnelling equipment. Suppliers from Germany, China, Japan and Australia have played important roles in India’s TBM market.
China has emerged as a major global manufacturing centre for these machines, accounting for a substantial share of worldwide production.
This dependence creates risks for Indian infrastructure projects because procurement schedules can be affected by export restrictions, geopolitical tensions, shipping delays and shortages of specialised components.
The scale of the technology involved can be seen in India’s Mumbai-Ahmedabad bullet train project. TBMs used for the Mumbai section have cutter heads measuring approximately 13.6 metres in diameter. These machines were manufactured by Germany’s Herrenknecht at its Chinese facility.
The example highlights the technical complexity of large tunnelling equipment and India’s reliance on international manufacturing capabilities.
China’s Export Restrictions Highlight Supply-Chain Risks
BEML’s manufacturing plans have gained additional importance following China’s decision to tighten export controls on certain categories of tunnel boring machines and related equipment.
China announced the restrictions on October 19, 2026, with the controls scheduled to take effect on November 18.
Beijing cited national security and non-proliferation obligations as reasons for the measures.
The restrictions have raised concerns among countries that depend on Chinese manufacturing facilities for specialised construction machinery.
For India, the issue is particularly important because TBMs are required for major infrastructure projects, including underground metro systems and tunnels in difficult geographical regions.
However, BEML’s chairman indicated that the company’s development plans were already underway independently of China’s latest export restrictions.
The development therefore reflects a longer-term manufacturing strategy rather than an immediate response to the latest geopolitical developments.
BEML Wants to Build Proprietary Indian Technology
One of the most important aspects of BEML’s plan is its focus on indigenous technology.
Developing a TBM requires expertise across several engineering disciplines, including mechanical systems, cutting technology, hydraulic equipment, ground-pressure management and electronic controls.
Different geological conditions also require different machine configurations.
For example, a machine designed for soft soil conditions may not be suitable for excavating hard rock. Projects involving groundwater pressure, mixed geological formations and densely populated urban areas require specialised designs.
BEML will need to develop or integrate capabilities in:
| Technology area | Role in tunnel boring machines |
|---|---|
| Cutter-head systems | Break and excavate soil or rock |
| Hydraulic systems | Power machine movement and operations |
| Ground-pressure control | Maintain stability during excavation |
| Navigation systems | Maintain tunnel alignment |
| Electronic controls | Monitor and manage machine operations |
| Conveyor systems | Remove excavated material |
| Sealing technology | Manage groundwater and pressure |
Building these capabilities domestically could help India reduce dependence on foreign suppliers over time.
However, the company will also need to establish a reliable supplier network, conduct extensive testing and provide maintenance support throughout the machines’ operating lives.
India’s Tunnel Boring Market Could Grow 12% Annually
BEML expects India’s TBM market to expand by approximately 12% annually over the next seven to eight years.
The projected growth is linked to increasing investment in underground infrastructure across the country.
Several sectors are expected to contribute to demand:
Metro rail: Indian cities are expanding underground metro networks to improve urban transportation and reduce road congestion.
Railways: New railway corridors and high-speed rail projects require tunnels through difficult terrain.
Road infrastructure: Highway and strategic road projects increasingly involve tunnels through mountains and other challenging geographical areas.
Hydropower: Underground tunnels are required for water diversion, power generation and associated infrastructure.
Water and irrigation: Urban water supply, sewage systems and irrigation projects also require underground excavation.
The Ministry of Road Transport and Highways has previously outlined plans involving substantial investment in tunnelling projects over the coming years.
For BEML, this expanding demand could create an opportunity to establish a domestic manufacturing business in a specialised segment of the construction equipment industry.
Government Push to Reduce Machinery Imports
BEML’s plans also align with India’s broader effort to strengthen domestic manufacturing of high-value construction and infrastructure equipment.
In August 2026, reports indicated that the government was considering a $1.2 billion incentive programme to encourage local production of machinery such as tunnel boring machines, firefighting equipment and elevators.
The proposed programme was expected to attract around $1.8 billion in fresh investment over seven years.
The broader objective is to reduce dependence on imported equipment and increase domestic value addition.
For companies such as BEML, government support could help make specialised manufacturing more commercially viable.
However, the success of such initiatives will depend on the availability of technology, skilled engineers, component suppliers and sufficient demand from infrastructure developers.
How Long Will BEML Take to Deliver Its First TBM?
BEML’s manufacturing ambitions remain at an early stage.
The company expects that delivering its first machine could take approximately 22 months after securing a contract.
This means the development programme will require substantial engineering work before machines become commercially available.
The company will also need to demonstrate that domestically developed equipment can meet the performance, safety and reliability requirements of major infrastructure projects.
For large contractors and government agencies, machine reliability is critical. A breakdown during underground excavation can delay construction and increase project costs.
BEML’s nationwide service network could become an advantage in providing maintenance and after-sales support, but the company will need to build specialised technical teams for the new product category.
What Does the Development Mean for India’s Infrastructure Industry?
Domestic TBM manufacturing could create opportunities across India’s engineering and infrastructure sectors.
Local production may reduce procurement dependence on foreign suppliers and potentially improve access to spare parts and maintenance services.
It could also create business opportunities for Indian companies supplying motors, hydraulic systems, electronic controls, cutting tools and other specialised components.
For infrastructure developers, a domestic manufacturing base could eventually offer another source of equipment and reduce exposure to international supply-chain disruptions.
However, Indian-made machines will need to compete on cost, efficiency, reliability and technological performance.
The ability to manufacture a TBM locally is only one part of the challenge. Building a complete ecosystem capable of designing, testing, operating and maintaining these machines will be equally important.
The Bigger Picture
BEML’s plan represents an important step in India’s effort to build domestic capabilities in specialised infrastructure equipment. The country is investing heavily in metro networks, railway corridors, highways, hydropower and underground utilities, creating demand for advanced tunnelling machinery. Reducing reliance on imported TBMs could improve supply-chain resilience and give Indian manufacturers a larger role in the infrastructure development cycle.
However, developing a competitive domestic TBM industry will require more than manufacturing facilities. BEML must build proprietary engineering expertise, establish a reliable component supply chain and demonstrate that its machines can operate effectively under India’s varied geological conditions. The company’s initial focus on smaller machines provides a gradual entry into the market, while its longer-term success will depend on technology development, project contracts and customer confidence.
Looking Ahead
BEML’s immediate focus will be on developing its first generation of smaller tunnel boring machines with support from an international consultant. The company will need to complete the engineering and development process, secure orders and demonstrate its equipment’s performance in actual infrastructure projects. Its expected 22-month delivery timeline after securing a contract provides an indication of the work involved before the first machine reaches a customer.
Over the longer term, the initiative could help India develop a domestic supply chain for one of the most specialised categories of construction equipment. Demand from metro rail, hydropower, irrigation and road projects may provide the commercial foundation for expansion into larger machines. Whether BEML can reduce India’s dependence on foreign suppliers will ultimately depend on its ability to deliver reliable technology at competitive costs.
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