Rock drilling tools manufacturer ProDrill provides a wide of threaded button bit as per different thread type, diameter, skirt body, face, and carbide shape as for your drilling job.

Rock drill bits factory ProDrill offers a wide of threaded drill bit as per different thread type, diameter, skirt body, face, and carbide shape as for your drilling job, there are two thread type of R, T, R series threaded button bit including R22, R25, R28, R32, size 38 mm, 41mm, 45 mm, 48mm, 51mm used in tunnelling and drifting drilling for underground mining, Above R25-38 mm button drill bit with 7 tugsten carbides to match Shand Rods with 0.5 m, 0.8 m , 1.2 m for quarrying, drilling machine is YT28 , YT27, YT29A, shank size : 22*108mm, total drifferent with normal threaded top hammer drill rod ,MF Rod, Drifting Rods,

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.
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.
 

R22, R25, R28 Threaded Button Bits of rock drill bits.

Diameter 40mm, 41mm, 43mm, 45mm.

Threaded drill bits used in drifting and tunneling, or dimensional natural stone quarrying. To match shank rod, and MM Hex drifter rod for light-duty top hammer.

7 Semi-ballistic buttons, R25 Threaded Drill Bit.

For more details please watch PDF online: R25 Threaded Drill Bits for Drifting and Tunneling Catalogue