Tunnel jumbo drilling rig DD321

double-arm

Sandvik DD321 is a compact two-boom jumbo capable of operating in demanding conditions, thanks to its flexibility to answer various needs such as face drilling, cross-cut drilling and bolt-hole drilling. Accuracy and efficiency The rig’s adaptive and advanced control system offers optimized drilling performance and tool life in all rock conditions. Versatile drill DD321 offers a versatile feed to increase productivity in a wide range of applications ensuring minimum length for short holes and maximum length for long holes. Reliability The compact two-boom Sanvik DD321 ensures a reliable workplace for both operators and maintenance crews with well-designed structures, proven components and improved serviceability. Tramming type and distance ​​Hydrodynamic transmission - Diesel engine – QSB 4.5 (124 kW, Stage IIIA) Hydrostatic transmission - Diesel engine - TCD2.2 (55 kW, Tier 4F, Stage V) Hole diameter 43 - 64 mm Number of booms 2 x SB40 Drift size (H x W) 3.5 x 3.5 m Feed length Fixed TF500 12 to 16 ft. or telescopic TFX 6-12 ft. to 8-14 ft. Rock drill RD520 20kw Voltage 380 - 690 V (multi voltage) Controls type THC561, hydraulic controls Weight 22,000 kg (depending on options)