Liebherr LRB 255 - Manual (Page 12)

12 LRB 255
Continuous fl ight auger drilling
Model BA 250
Effective length – max. 28 m
Auger with hydraulic auger cleaner
Display for continuous fl ight auger drilling
Technical data
Drilling drive - torque 1 st gear 250 kNm
Drilling drive - speed 1 st gear 25 rpm
Drilling drive - torque 2 nd gear 125 kNm
Drilling drive - speed 2 nd gear 50 rpm
Performance data
Drilling depth without auger cleaner* 23.0 m
Drilling depth with auger cleaner* 21.5 m
Max. pull force (crowd winch and Kelly winch) 850 kN
Max. push force (weight of rotary and auger to be added) 200 kN
Max. drilling diameter* 1000 mm
*) Other drilling diameters and drilling depths available on request