Redbore 90

The Redbore 90 addresses the growing demand for a raise drill that will efficiently complete raises up to 20’ (6.1 m) in diameter and up to 2,000’ (609 m) deep. This considerably more compact drill provides a cost-effective method to bore large diameter raises while minimizing costly underground excavations. 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. Nominal capacities range up to 20’ (6.1 m) diameter raises.



Extended Height 219″ (5.56 m)
Footprint Width 93″ (2.36 m)
Footprint Depth 84″ (2.13 m)
Weight 76,460 lbs (34,682 kg)


Thrust System

Maximum Upream Force N/A
Maximum Conventional Ream Force 2,000,000 lbs (8,896.4 kN)
Maximum Downream Force N/A


Rotation System

Reaming Torque 475,000 ft / lbs (644 kN.m)


Nominal Parameters

Pilot Hole Diameter 15″ (381 mm)
Drill Pipe Diameter 13 1/8″ (333 mm)
Hole Diameter Downream N/A
Hole Diameter Upream N/A
Hole Diameter Conventional 20′ (6.1 m)
Raise Length Conventional 2,000′ (609 m)
Raise Angle 60 – 90 degrees



Redtrax Transporter N/A
Erector System Yes

*Electrical systems built to suit regional requirements


Note: Drill specifications including thrust, torque, weights and dimensions are approximate and may vary from those provided.