The Raiseboring Revolution | E & MJ
It can comfortably execute raises of up to 500 m at 2.4 m diameter and larger ones up to 4.1 m diameter (of shorter depths). It has a maximum pilot drilling torque of 42,000 Nm, a reaming torque of up to 209,000 Nm and breakout to 236,000 Nm. The maximum down thrust force is 665 kN with up thrust being 4,150 kN.