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Small hole drilling tools summary

Small hole drilling tools summary

Small hole drilling tools summary

Product details

Small hole drilling tools summary


ProDrill offers a full string of rock drill bit & rod for drilling small hole, small hole diameter scope is 20mm- 40 mm at most . detailed products included :

1.          Integral drill steels, plug-hole drill steels.

Shank size of integral steels, and plug-hole integral steels is H19, H22,

Shank 22*108mm( 7/8'' *4 1/4''), 19*108mm(3/4'' *4 1/4'')

Integral rod diameter 30mm-40mm for granite, marble, sandstone, lime stone quarry blocks mined by CrackMax Expansive Mortar as 1st cut , and 2nd cut by Hydraulic Rock Splitters for gang saw size stone blocks.


Plug-hole integral steel diameter 17mm-22mm, is stone working tools, this mini small hole drilling is for stone blocks splitting by shims and wedges, stone wedges, or pneumatic hammer G7, G10, G10, G15


2.  Tapered tools include        tapered drill rods to match        tapered bits, 30mm-40mm , shank size H22, taper degree 11, 12, 7 degrees, button bits with short skirt 50-65mm, long skirt 65-80mm, borehole diameter 28-38mm, tapered rod length scope 610mm, 1220mm, 1830mm, 2000mm, 2440mm, 3050mm, 3660mm


     tapered drill rod,button bits,chisel bit

     H22 tapered drill rod + button bit +       chisel bitfor granite quarry. 

Length gap is 610mm (2''), all ProDrill tapered rod's heat treatment is carburized, or HF-hardened-for surface drilling, for small hole drill rod we can supply 3 kinds of materials saying GI, GII, GIII,. GIII is a best quality which can used by hydraulic top hammer, other is for hand drills, and pusher leg drills.

Tapered button bit

Q7-34-12 22 -65 tapered button bits 


3.   Small chisel bit, Small tapered drill rod, Diameter is 16mm-22mm working for Y6, Y8, Y10 hand drills, for granite trimming in factory, or stone black cut by hand splitter.

Tapered drill rods,tapered chisel bits

4.   For small hole drilling, also we can offer R22 ( 7/8''), R23 (29/32'') , R25 (1''), R28 (1 1/8'')thread type Extension Drilling Tools, a full string is       shank rod Hex22-R22/R23/R25/R28 , or           shank adapter,        coupling sleeves, extension rod like R22/R23/R25/R28 -Hex 22/23/25/28- R22/R23/R25/R28 , to fit cross bit R22/R23/R25/R28.

Small R thread type drill bit designed for light-duty hydraulic rock drills, or powerful pneumatic rock drills. Length of threaded rod for small hole drilling is 250mm-1000mm at most. 

Hydraulic rock drills,integral steels

Sandvik DQ7, Truck-type hydraulic rock drills using 34mm Integral Steels , photo taken in black granite quarry, Ongole, India. 


stone drill rig,integral drill rods

Sandvik DQ7, Truck-type hydraulic rock drills using 34mm Integral Steels, photo taken in black granite quarry, Ongole, India. 


Rock drill rig,integral rods

Sandvik DQ7, Truck-type hydraulic rock drills using 34mm Integral Steels , photo taken in black granite quarry, Ongole, India. 


integral drill steels

Sandvik DQ7, Truck-type hydraulic rock drills using 34mm Integral Steels , photo taken in black granite quarry, Ongole, India. 

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