The Underground Roof Bolting Jumbo Rig is a specialized tunnel support drilling machine designed for installing rock bolts in underground mining, tunneling, and cavern construction projects.
It is used to reinforce tunnel roofs and walls after excavation, improving ground stability and preventing rock collapse. The rig combines a hydraulic drilling system with precise positioning booms to ensure accurate bolt hole drilling in confined underground environments.
| Parameter | Specification / Range |
| Application | Underground Roof Bolting |
| Drilling Method | Hydraulic Top Hammer |
| Boom System | Single / Multi-boom |
| Hole Diameter | 27 – 45 mm (bolt hole range) |
| Maximum Drilling Depth | Up to 3–6 m per hole |
| Rock Formation | Medium-hard to hard rock |
| Mobility | Underground articulated chassis |
| Power System | Hydraulic drive system |
| Control System | Hydraulic + electronic control |
| Operation Type | Tunnel support bolting |
Provide your formation and core size — we will recommend the best configuration.
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