The Leffer 3.0M rotator is a boring machine capable of drilling a 3.0M hole over 200 ft in depth providing casing to the bottom of the bore hole. This fully cased method causes less overbreak and creates a cleaner pile.

The machine has over 5 million ft-lbs of torque and 1 million lbs extraction force. By using reduction inserts the diameter can be reduced to 2.8M or 2.5M.

Clean out of the cased shaft is accomplished by using a large grab in conjunction with a heavy duty crane.