Threaded Button Bit T38-89 Q14 for Top Hammer drilling

ROSCHEN offers rock drill bits: T38 Threaded Button Bits is the most important size for benching and long-hole drilling underground

Diameter: 64mm 76mm, 89mm,

Skirt body: retrac, and normal,

Face design: flat, uniface, drop center

Carbide design:  Dome, ballistic

Used in bench drilling, underground long hole drilling

To match extension MF rod, MM rod heavy duty top hammer.

Dome carbide inserts with drop center face, 89mm diameter threaded drill bits with T38 thread for bench drill, underground long hole drilling to match extension drill rods.

In order to better resist the abrasiveness of rock, spherical shape will be a good option for the carbide if high speed is not a necessity.

We will choose to use tungsten carbide of T6，featuring good wear-resistance and toughness.

 This type of carbide has already been proved to be the best in world and been competing with those big names worldwide for quite a long time.

 Meanwhile，we will choose to use superior steel suitable for hot insertion technology, by which the drilling bits body will hold the carbide buttons so tightly that reduce the risk of buttons’ dropping out of the holes.