Excavator tunnel arm tunnel boom also name excavator shorten arm shorten boom which is very suitable for digging tunnels and work in narrow places.
✅ Reinforced High-Strength Steel – Built for extreme durability in tough tunneling conditions.
✅ Optimized Design for Confined Spaces – Compact yet powerful, ideal for metro, mining & utility projects.
✅ Enhanced Digging Force & Stability – Superior hydraulic efficiency for maximum productivity.
✅ Extended Lifespan – Robust joints & wear-resistant components reduce downtime.
✅ Compatible with Major Excavator Brands – Easy installation on leading machine models.
![]() |
![]() |
Q: What makes your tunnel arm different from standard excavator arms?
A: Our tunnel arm is specifically engineered for underground work, with reinforced steel, optimized geometry, and superior hydraulic performance to handle confined spaces and heavy loads.
Q: Which excavator models is this arm compatible with?
A: It fits most major brands (e.g., CAT, Komatsu, Hitachi, Kobelco etc) – contact us for custom mounting solutions.
Q: How does it improve efficiency in tunneling projects?
A: The design maximizes digging force while minimizing swing radius, ensuring faster, safer excavation in tight spaces.
Q: What’s the expected lifespan?
A: With proper maintenance, our tunnel arm lasts 2-3X longer than standard arms due to premium materials and reinforced stress points.
Search "Heavy-Duty Excavator Tunnel Arm" for industry-leading performance! Contact us today for specs & customization.