Rock drilling tools manufacturer ProDrill manufactures high quality rock drill bits, one of the most important size for benching and long-hole drilling underground is T51 Threaded Button Bit
Diameter: 76mm, 89mm, 102mm
Skirt body: retrac, and normal, straightrac
Face type: flat, uniface, Drop Center
Carbide shape: Dome, ballistic, semi-ballistic
Used in bench drilling, underground long hole drilling to match extension MF rod, MM rod heavy duty top hammer drilling tools.
T51 Threaded Button BitT51 Threaded Button BitT51 Threaded Button Bit
8 Dome, 6Ballistic carbide inserts T51 threaded drill bit with drop center face design, 115 mm diameter match with extension drill steels.
T50 Power ROC
Sandvik Top hammer drill rig RANGER DX700 using ProDrill drill bits , showing perfect drilling performance of higher penetration rate , longer life, lower cost.