R28-41mm Thread Button bits

Product Item：005

Thread type:R25,R28,R32,R38,T38,T45,T51,ST58,ST68,GT60

Diameter:33mm-152mm

Button bit shape:Spherical and Ballistic

Face shape:Flat shape and Drop-center shape

Category：R28 Thread Button Bit

Description

R28-41mm Thread button bits

SUPERDRILL 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.

SUPERDRILL 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

Notes:

Special sizes may be available upon request.

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

Choosing The Right Carbide

The larger the volume of the Carbide, the more aggressive the Bit. The more aggressive Carbides assist movement of the chips away from the face as there is more room for airflow on the face of the Bit. These more aggressive Bits help to break out larger chips, which increases the penetration rate. The greater volume of Carbide can lead to longer Bit life.

Button Shape	Applicatio
Spherical	Spherical Carbides for use in medium to hard rock, with fractured or seamy applications.
Semi-ballistic	Semi-ballistic shaped, more aggressive than the Spherical Carbides, for soft to medium consistent rock.
Ballistic	Bullet shaped, very aggressive fast penetration in soft to medium consistent rock.