NCB International offers a wide and complete series of underreamers of different sizes, with a body diameter from 500 mm to 1500 mm and a reaming diameter from 1000 mm to 3000 mm.
Underreamers
TECHNICAL DATA
| Body Diameter | mm | 500 | 600 | 700 | 800 | 900 |
| Reaming Diameter | mm | 1000 | 1200 | 1400 | 1600 | 1800 |
| Overall Height | mm | 1800 | 2000 | 2200 | 2400 | 2600 |
| Weight | kg | 1100 | 1400 | 1700 | 1900 | 3000 |
TECHNICAL DATA
| Body Diameter | mm | 1000 | 1100 | 1200 | 1300 | 1500 |
| Reaming Diameter | mm | 2000 | 2200 | 2400 | 2600 | 3000 |
| Overall Height | mm | 2800 | 3000 | 3200 | 3400 | 3800 |
| Weight | kg | 3400 | 3800 | 4100 | 4300 | 5000 |
