Spherical Button Bits Rock Drilling R28 76mm With Domed Face Top

Reaming Drill Bit R28 76mm Spherical Button Drill Bit with Domed Face Top

Our thread button bits are made with high quality of best quality alloy steel bar and tungsten carbides with superior wear resistance and impact toughness superior, through heat treatment so that it can withstand the toughest rock drilling demands, and transmit intensive impact energy into the rock with the least possible loss of energy.

Features:

Thread connection: R25, R28, R32, R38, T38, T45, T51, ST58, GT60 and ST68.

Carbide profile: Spherical, ballistic and parabolic.

Bit Faces: flat, concave, convex and drop-center, uniface.

Bits Diameters: 33mm-127mm

Bit body: standard and retrac

Skirt selection:

Standard Skirt

Typically smaller than the head diameter to avoid cuttings and the rock wall, therefore optimizing hole flushing.

Heavy Duty Skirt

A variation on the standard skirt design, available for very abrasive conditions. The heavy duty skirt has added wear material towards the front of the skirt to protect the bit against abrasive cuttings.

Retrac Skirt

Designed to improve hole straightness, as well as to assist in retrieval of the drill string. The splines will also improve the hole flushing characteristics of the bit due to the chip ways between the splines

Products Parameters:

Product Advantage:

1.  Mature heat treatment technology ensure high quality of bits

2.  work reliable and very cost-effective

3.  High grade tungsten carbide inserts

Specification of other Retrac Button Bits: