Boart Longyear blade bits accommodate all of the common thread or taper types and are available in cross and "X" types.
for all the most common hammers in the market and are available in a wide range of sizes and styles to suit the most demanding drilling applications. They are available in parabolic or hemispherical button designs and feature a wide range of face designs, button layouts and flushing configurations.
Boart Longyear button bits come in a wide range of sizes and styles to suit the most demanding drilling applications. They accommodate all of the most common thread or taper types and are available with parabolic or hemispherical buttons. They al
so feature a wide range of face designs, button layouts and flushing configurations and are available in retract or standard body design.
Collar Taper Rods are used for hand held drilling, hexagonal steel is used exclusively in diameters 22mm (7/8 in) and 25mm (1.0 in). It has a forged collar to maintain the proper striking face position in the rockdrill and to assist in retracting the steel from the hole.
Boart Longyear collar taper rods are available in both 11° and 12° tapers and in all the standard lengths. All of Boart Longyear collar taper rods under 5.52m (18 ft) are carburized because they are most commonly used in underground applications where corrosion resistance is important.
Extension rods are used for multi pass drilling. Boart Longyear extension rods are available in round and hexagon versions with male-to-male or male-to-female (MF) ends. They are either carburised or high frequency induction hardened and are manufactured in all of the most common thread types.
Boart Longyears shank adapters are the most common drills in the market and are available in male and female configurations. The male shank adapter is more common but the female shank adapter is used to maximize the effective hole depth when the total feed length is limited, for example when underground roof bolting.
Tunneling rods are used in single pass drilling and are most commonly available in hexagon, male-to-male configuration. Typically the drive thread is larger than the bit thread, this larger size is possible because it is used in a single pass application so there is no restriction on the coupling diameter because the coupling does not enter the drill hole. All tunneling rods are carburised because they are used underground where corrosion resistance is important.