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.

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)