

First Break Mining

Rotary blast hole rigs
Pit Viper PV-311
The most efficient rotary tricone drill available for drilling 270 mm to 311 mm (10-5/8” to 12-1/4”) holes


A single pass drill designed to last
The Pit Viper 311 takes everything that makes a Pit Viper great and makes it even better. By utilizing a high proportion of proven technology and design from previous rigs in the Pit Viper Series, the progress towards greater energy efficiency, safety and productivity continues.
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.
PV-311 the most efficient rotary tricone drill available for drilling 270 mm to 311 mm (10-5/8” to 12-1/4”) holes with up to 19.8m (65 ft) clean hole single pass capability.
A rotary head with powerful torque of up to 18 kNm (13,250 lb-ft) , compressor capacity of up to 3,000 cfm of air, and 49895 kg (110,000 lb) weight on bit, give the PV-311 more than enough performance to drill a 12-1/4” hole
Preventative maintenance is simple and fast on the PV-311 thanks to placement of all filters in a centralized, easy to access location on the deck.
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 Epiroc patented hydraulic wet clutch removes the load of the compressor during non-drilling functions and decreases fuel consumption and TCO
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 BenchREMOTE 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.
The PV-311 offers great service access due to the layout of the deck and the ability to troubleshoot through the RCS system in the cab.
A large cab offers excellent visibility and operator comfort, it's kind of like getting an upgrade to first class on your flight.


Technical Specifications | Imperial | Metric |
---|---|---|
Product series | Pit Viper series | Pit Viper series |
Drilling method | Rotary and DTH - Single pass | Rotary and DTH - Single pass |
Hole diameter | 9 - 12.25 inch | 228 - 311 mm |
Hydraulic pulldown | 100,000 lbf | 445 kN |
Hydraulic pullback | 50,000 lbf | 220 kN |
Weight on bit | 110,000 lb | 49,900 kg |
Single pass depth | 65 ft | 19.8 m |
Maximum hole depth | 135 ft | 45 m |
Estimated weight | 310,000 lb | 140 t |

