R28 Drill Bit for Drifting

R28 Drill Bits are made by high quality alloy steel bar and tungsten carbides.It is widely used in Drifting and Tunneling. GMD could design customized thread button drill bits according to different drilling application....

Send InquiryChat Now

GMD rock tools for top hammer drilling are designed to transmit intensive impact energy into the rock with the least possible loss of energy. The result is good rock breakage, high penetration rates and high productivity. This, together with optimal hole quality, great reliability and long service life, gives the best possible blasting results, outstanding drill-steel economy and low total cost.

GMD offers a complete selection of Top Hammer Drilling Tools to meet all of your drilling needs,which are suitable for any type of drilling application in mining, tunneling, construction and quarry work.


Specification of R28 Drill Bit, kindly check below:

A comprehensive range of various button bits shown as below:

Thread type: R28

Head diameters: 33mm ~ 76mm

Face designs; flat face,

Carbide shape: Dome, Ballistic , Semi-Ballistic,

Skirt designs: Standard

Application: Drifting and Tunneling

image004.jpgimage006.jpg


R28 Drill Bits for Drifting and Tunneling

Name

Code No.

Thread

Diameter

Gauge

Front

Skirt Design

Weight

Threaded Button Bits

Q7-36-R28

R28

36

5*8mm

2*7mm

Standard

0.42

Q7-38-R28

R28

38

5*8mm

2*8mm

Standard

0.48

Q7-41-R28

R28

41

5*9mm

2*9mm

Standard

0.56

Q7-43-R28

R28

43

5*9.5mm

2*8mm

Standard

0.68

Q7-45-R28

R28

45

5*10mm

2*9mm

Standard

0.72

Q9-45-R28

R28

45

6*9mm

3*8mm

Standard

0.72

Q9-48-R28

R28

48

6*9mm

3*9mm

Standard

0.89

Q9-51-R28

R28

51

6*10mm

3*9.5mm

Standard

0.97


Notes:

Special sizes may be available upon request.


How to order?
Button Bit: Diameter   + Thread + Skirt Shape + Face Design + Insert Configuration

image008.jpg





How to Choose the Right Button Shape

Button Shape and Application

Button Shape

Application

image010.gif

Domed/Round Button

Domed/Round buttons are suitable for very abrasive   and very hard formations.

image012.gif

Parabolic /Semi-Ballistic Button

Parabolic buttons are usually used as gauge buttons and front buttons, suitable for medium abrasive and hard formations.


Key Words:

R28 Drill Bits

R28 Threaded bit,

thread button bit,

R28 button bit

R28 Button Bit for for Drifting and Tunneling

Thread Button Bit for for Drifting and Tunneling

Button Bit for for Drifting and Tunneling

Button Drill Bit for for Drifting and Tunneling


Hot Tags: R28 drill bit for drifting, suppliers, manufacturers, factory, price
Related Products