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First Break Mining

Rotary blast hole rigs

Pit Viper PV-351

The most productive rotary tricone drill available for drilling 207mm to 406mm (10-5/8” to 16”) holes with up to 19.8m (65 ft) clean hole single pass capability.

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The pit viper that started it all

The Pit Viper name has become synonymous with productivity in the mining industry and the PV-351 is the Pit Viper that started it all. With a standard Rig Control System (RCS) operating platform, today’s PV-351 sets the bar for productivity and reliability when large blastholes are part of the production plan.

Look to the Pit Viper series of drills if technology, productivity, and high asset life for the lowest total cost of ownership are on your list of priorities. When it comes to large holes in hard rock you can't compromise anywhere. A powerful rotary head, high bit load, large compressor, and robust structure bring balanced power for the hardest rock.

A rotary head with powerful torque of up to 25.7 kNm (19,000 lb-ft) , compressor capacity of up to 3,800 cfm of air, and 56,700 kg (125,000 lb) weight on bit, give the PV-351 balanced and powerful system to quickly drill through hard rock.

The PV-351 has both diesel and electric versions. Both the diesel and electric operate on a common drill platform, allowing the best in class serviceability for mines who need the flexibility for both machines.

The PV-351 offers excellent serviceability with easy access to filters and the ability to troubleshoot systems and components through the RCS system in the cab or remotely from the office with the optional Desktop Viewer package.

The single pass tower allows for clean hole single pass drilling of up to 19.8 m (65 ft) and multi pass drilling of up to 41 m (135 ft). The tower is also a “live tower” design meaning it can be raised and lowered with a full carousel and the rotary head at the top of the tower – further testament to the structural design of the tower.

The standard Rig Control System (RCS) provides on board automation capability as part of the standard drill package to help deliver safety and productivity. With RCS you can run automation with an operator on board with options like auto drill and auto level or you can run with the operator off the drill with the optional Bench Remote package allowing one operator to run one or multiple units. With the RCS system on Pit Vipers you can even achieve your ambition of fully autonomous drilling with almost no human interaction with the drill..

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Technical SpecificationsImperialMetric
Product seriesPit Viper seriesPit Viper series
Drilling methodRotary - Single passRotary - Single pass
Hole diameter10.62 - 16 inch270 - 406 mm
Hydraulic pulldown120,000 lbf534 kN
Hydraulic pullback60,000 lbf267 kN
Weight on bit125,000 lb56,700 kg
Single pass depth65 ft19.8 m
Maximum hole depth135 ft41.1 m
Estimated weight385,000 - 415,000 lb175 - 188 t

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