Home > Products> THREADED BUTTON BITS> R22/R25/R28

Hot product
Contact us

Email: [email protected]


Addr: Room 805 C1 Wanda Plaza, No.5 Jinzhong Road, Huli District, Xiamen, China


Q7-43-R28 Threaded Button Bit

  • Code No.: Q7-41-R28
  • Thread: R28
  • Diameter: 43mm
  • Gauge Buttons: 5*9.5mm
  • Front Buttons: 2*8mm
  • Skirt Design: Standard
  • Weight: 0.68KG
  • Carbide Design: Ballistic
  • Face Design: flat

Q7-43-R28 Threaded Button Bit

Threaded Button Bit
Threaded Button Bit

Product details

Rock drilling tools manufacturer 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.

Q7-43-R28-Threaded Button Bit

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,

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

Carbide shape: Dome, Ballistic , Semi-Ballistic, 

Skirt body :  Standard

Used in drifting and tunneling, or dimensional natural stone quarrying

To match shank rod, and MM Hex drifting drill rod for light-duty top hammer.

Drift rod size : R32-R28-H28  2600mm, 3100mm 

Q7-43-R28-Threaded Button Bit



Rock Drill Bits: R Thread Button Bits

Has good wear properties
• It is ideal for single pass or short hole drilling such as underground tunneling application that require infrequent uncoupling
• It is available in sizes 38 mm40mm, 41mm, 43mm, 45mm.

PDFFor more details please watch PDF online: R28 Threaded Drill Bits for Drifting and Tunneling Catalogue

Product Inquiry