The Double Shield Tunnel Boring Machine (TBM) is a highly advanced and efficient solution for hard rock tunneling projects, including metro systems, railway tunnels, hydropower tunnels, and large infrastructure developments.

Manufactured between 2015 and 2020, this TBM represents modern tunneling technology, combining high power, structural strength, and operational efficiency. Built by globally recognized manufacturers Robbins and Herrenknecht, the machine ensures reliability, precision, and long service life.

With a boring diameter of 7.1 meters, this TBM is suitable for medium to large tunnel projects, providing consistent excavation performance even in the most demanding geological conditions. The double shield design allows simultaneous excavation and segment installation, significantly improving productivity and reducing project timelines.

The machine is equipped with a main drive power of 2,310 kW (7 × 330 kW motors) and delivers a thrust force of 33,780 kN, ensuring powerful penetration through hard rock formations. Its stroke length of 1,760 mm and installed power of 4,800 kVA further enhance operational capability.

With a total weight of approximately 770 tons, this TBM is built for stability, durability, and high-performance tunneling operations worldwide.

Why Choose Double Shield TBM?

This TBM is ideal for contractors and infrastructure companies seeking a high-capacity and reliable tunneling solution.

Key advantages include:

• Designed for hard rock tunneling
• High power and thrust for difficult geology
• Double shield technology for faster progress
• Built by leading global manufacturers
• Suitable for large infrastructure projects worldwide

It is a perfect investment for companies involved in tunnel construction, metro projects, and underground development.

Key Features

✔ Double Shield Technology

• Simultaneous excavation and segment lining
• Increased tunneling efficiency

✔ High Power Drive System

• 7 × 330 kW motors (2,310 kW total)
• Strong performance in hard rock

✔ Large Boring Diameter

• 7.1 meters
• Suitable for major tunnel projects

✔ High Thrust Force

• 33,780 kN @ 350 bar
• Effective rock penetration

✔ Robust Construction

• Weight: approx. 770 tons
• Built for demanding environments

Technical Specifications

General Information

• Manufacturer: Robbins / Herrenknecht
• Model: Double Shield TBM (Hard Rock)
• Year: 2015 / 2020
• Condition: Used

Performance

• Boring Diameter: 7.100 m
• Main Drive Power: 2,310 kW (7 × 330 kW)
• Installed Power: 4,800 kVA

Mechanical System

• Thrust Force: 33,780 kN @ 350 bar
• Stroke Length: 1,760 mm

Dimensions & Weight

• Machine Length: 14 m
• Weight: approx. 770 tons

Machine Type

• Type: Double Shield Tunnel Boring Machine
• Application: Hard rock tunneling

Applications

This TBM is ideal for:

• Metro and railway tunnels
• Hydropower and water tunnels
• Highway tunnel construction
• Underground infrastructure projects
• Mining and large-scale excavation

Benefits of This Equipment

🚀 High Productivity

Double shield design increases tunneling speed.

💰 Cost Efficiency

Reduces project timelines and labor costs.

🌍 Global Application

Suitable for major infrastructure projects worldwide.

⚙️ Advanced Technology

Modern design ensures reliable performance.

🏗️ Built for Hard Rock

Handles challenging geological conditions effectively.