Redbore 90
The Redbore 90 was manufactured to address the growing demand for 4.5 meter to 5.5 meter diameter raises. Redbore 90 raise drill will efficiently complete raises up to 5.5 meters in diameter and up to 600+ meters deep. This considerably lower profile drill, provides a cost effective method to bore large diameter raises underground while minimizing the expensive underground excavations required by older model raisedrills. The Redbore 90 is easily dismantled and provides quicker, more efficient, equipment mobilization whether on surface or underground; resulting in savings of time and money.
Dimensions
| Extended Height | 18’-3 1/4” (5.56 m) |
| Retracted Height | 13’-9 1/8” (4.2 m) |
| Transport Length * | 13’-6 3/8” (4.12 m) |
| Transport Width * | 7’-2” (2.18 m) |
| Transport Height * | 7’-7” (2.28 m) |
| Transport Weight * | 76,460 lbs. (34,754.5 kg) |
*(excluding base plates/pipe loader/erector) |
Thrust System
| Thrust System Type | Hydraulic Cylinders |
| Maximum Pilot Hole Force | 150,000 lbs. (667.2 kN) |
| Maximum Reaming Force | 2,000,000 lbs. (8896.4 kN) |
| Operating Pressure | 4,500 psi (310.26 Bars) |
Rotation System
| Rotation System Type | 2 x 200 hp Electric Motors |
| Pilot Hole rpm | 0 – 45 Variable/td> |
| Pilot Hole Torque | 35,845 ft-lbs (48.6 Nm)/td> |
| Reaming rpm | 0 – 5.75 Variable/td> |
| Reaming Torque | 335,000 ft-lbs (454.5 kNm)/td> |
Drill String
| Raise Angle Range | 60º to Vertical |
| Pilot Hole Diameter | 13-3/4” (349 mm) |
| Drill Pipe Diameter * | 12-7/8” (327 mm) |
| Drill Pipe Length | 60” (1524 mm) s/s |
