The most productive rotary tricone drill available for drilling 207 mm to 406 mm (10-5/8” to 16”) holes with up to 19.8 m (65 ft) clean hole single pass capability.
- Highly efficient drilling
The Pit Viper 351 is one of the most efficient rotary tricone drills available for drilling 10 5/8 in to 16 in (270 mm to 406 mm) diameter holes. The PV-351 can drill an angled or vertical clean hole down to a depth of 65 ft (19.8 m) in a single pass, or a depth of 135 ft (41.1 m) in multi-pass applications. Single-pass drilling can improve drilling efficiency by up to 25% when drilling in soft material by eliminating rod change time and allowing more time for drilling. Eliminating rod changes also reduces the risk for operational errors. - Smooth operation with long life
The PV-351’s patented automatic cable tensioning system ensures an accurate head alignment, improves cable life and eliminates drill downtime for cable tensioning. This design allows smoother drilling, which helps increase the life of the bit and feed system - Ample power for hard rock
A rotary head with a powerful torque of up to 19,000 ft-lb (25,760 Nm), compressor capacity of up to 3,800 cfm of air, and 125,000 lb (56,700 kg) of weight on bit create a balanced and powerful system to quickly drill through hard rock.
| Main application area | Rotary blasthole drilling |
| Drilling method | Rotary |
| Product family | Pit Viper |
| Single-pass depth | 19,8 m |
| Maximum hole depth | 41,1 m |
| Cabin | Yes |
| Rotary head | N/A |
| Maximum hole depth | 35 m |
| Pulldown capacity | 0 kN – 534 kN |
| Pullback capacity | 0 kN – 267 kN |
| Note | Product variations apply. See brochure for more information. |
