Liebherr LRB 255 - Manual (Page 6)

Drilling equipment
Technical data
Double rotary drilling
Drilling drive I – torque 1 st gear 185,000 lbf ft
2 nd gear 92,000 lbf ft
Drilling drive – torque 1 st gear 184,400 lbf ft
2 nd gear 92,200 lbf ft
Continuous flight auger drilling
Max. drilling diameter 3.3 ft
Drilling drive I – speed 1 st gear 13 rpm
2 nd gear 26 rpm
Drilling drive II – torque 1 st gear 154,000 lbf ft
2 nd gear 77,000 lbf ft
Drilling drive II – speed 1 st gear 10 rpm
2 nd gear 20 rpm
Max. drilling diameter 4 ft
Drilling drive – speed 1 st gear 20 rpm
2 nd gear 40 rpm
6 LRB 255
С