DT721 Tunneling jumbo
Sandvik DT721 is two-boom electrohydraulic jumbo for fast and accurate tunneling and cavern excavation of 8 – 60 m². The DT721 jumbo is equipped with hydraulic drilling systems and it’s available in safety canopy version. Sandvik DT721 jumbo can be used for face drilling, cross-cutting and bolt hole drilling.
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Advantages:
- Built-in diagnostics to minimize maintenance time
- RD520 rock drills for optimized drilling performance
- Booms with large, optimally shaped coverage and full automatic parallelism
- Powerful 4-wheel-drive wheel steered carrier for rapid and well-balanced tramming
- FOPS-certified canopy or optional cabin for the safety
| Technical data | |
| Tunnel size | 9 970 - 6 685 mm (392 x 263 In) |
| Coverage area | 60 m² (645 ft²) |
| Hole diameter | 43 - 64 mm |
| Hole length | Up to 4 660 mm |
| Rock drill | RD520, 20 kW (26.8hp) |
| Control system | THC561, hydraulic |
| Boom | 2 x SB60 |
| Elevating boom support | No |
| Feed | 2 x TF500, 12 - 16 ft |
| Width | 2 310 mm (7.70 Ft) |
| Height | 2 680 mm (8.80 ft) Transportation 3 150 mm (10.3 ft) Cabin 3 420 mm (11.2 ft) Canopy FOPS/ROPS position |
| Weight (depending on options) | 24 500 kg (54 013 lbs) |