T38/64mm T38/70mm spherical retrac button bit

button type:

A.spherical button:

universal button,wearing resistance good,best suit to hard ground,180-320MPa,abrasive to very abrasive.

B.hemispherical button:

universal button,wearing resistance good,best suit to hard ground,170-300MPa,abrasive to very abrasive.

C.parabolica button:

universal button,fast penetration,best suit to medium to hard rock,100-170MPa,midly abrasive ground.

nical button:

fast penetration,best suited for smaller diameter bits,suited for all non-abrasive ground types.

E.ballistic button:

fast penetration,be suited to soft rock,70-140MPa,non abrasive ground.

Extension drilling tools:

Button bit, face design: Flat face, Drop centre, Normal and Retrac body.

Tungsten carbide (Buttons): Spherical, Ballistic and Conical. (Threaded R32, R38, T38, T45, T51 ; bit diameter: 45mm-127mm);

Couplings sleeves- manufactured with a middle stop to prevent walking along the thread. Include couplings sleeve (threaded R22, R25, R28, R32, R38, T38, T45, T51)

Shank adaptors - carburized and manufactured with tight tolerances and controlled straightness.

Thread Button Bit
Thread button bit (33mm, 35mm, 45mm, 51mm, 57mm, 64mm, 70mm, 76mm, 89mm, 102mm, 115mm, 127mm and so on.

R25--38mm, R25--41mm, R28--38mm, R28--41mm

R32; R32--45mm, R32--76mm, R32--89mm, R32--102mm

T38; T38--64mm, T38--76mm, T38--89mm, T38mm--102mm

T45; T45-70mm,T45-76mm,T45--89mm, T45--102mm

T51; T51--89mm, T51--115mm,  T51--127mm

Related products:

we also have extension rod,MF drill rod,coupling,shank adapters.