Description

Taper shank drills are general purpose drills with increased cutting length. ... Taper Shank Drills have a tanged conical shank to fit directly into the tapered holes of drill press spindles, driving sleeves or sockets. Taper Shank Twist Drill Sizes Chart according to ANSI B94.11M-1993 standard with inch and metric size taper shank drill bits. Drill bits are tools to cut cylindrical holes on workpiece. Drill bits are generally used with drills to create a hole. The shank of the drill is holded by the chuck of a drilling machine. We Stock complete range of Morse taper twist drill bits which are used in metalworking. The full range of tapers is from 0 to 7. Dia 3-100mm The Morse taper allows the bit to be mounted directly into the spindle of a drill, lathe tailstock, or (with the use of adapters) into the spindle of milling machines. It is a self-locking (or self holding) taper of approximately 5/8" per foot that allows the torque to be transferred to the drill bit by the friction between the taper shank and the socket. The tang at the end of the taper is only for ejecting the drill bit from the spindle, with the aid of a drift. The arbor of a drill chuck is often a Morse taper and this allows the chuck assembly to be removed and directly replaced with the shank of a Morse taper drill bit. A range of sleeves may be used to bring the size of the smaller Morse tapers up to the size of the drive spindle's larger taper. Sockets are also available to extend the effective length of the drill as well as offering a variety of taper combinations.