Morse taper was invented by Stephen A. Morse, an American engineer in the 19th century, to solve clamping issues of the twist drill (Morse is also the earliest inventor to commercialize twist drills in 1864). It was immediately promoted to become an American standard and soon developed into a global standard. Morse taper rod works with the tapered inner bore to carry torque by force of friction. Usually a flat tail is added to enlarge transmitted torque. It is widely used in machining because of its easy dismount and precision won't be affected after repetitive dismounting.
Morse taper has 7 numbers, namely 0, 1, 2, 3, 4, 5, and 6, and the taper value has fixed variation. The nominal diameters of each specification are respectively 9.045, 12.065, 17.78, 23.825, 31.267, 44.399, and 63.348, and mainly to be used for the hole taper of any kind of cutter (such as drill and milling cutting tools), any kind of tool holder and the machine spindle.
Morse tapers are also classified into long and short ones. Short tapers are used as machine tool accessories and connecting holes of the machine tool while long tapers are usually used on the spindle hole of the CNC.
Morse tapers have 6 specifications, namely B10, B12, B16, B18, B22, and B24. They came from the abbreviation based on Morse long tapers #1, #2, and #3. For example, B10 and B12 are two terminals of Morse long taper #1. General machine tool accessories use short tapers according to size and required driving torque. Commonly used 1-13mm drill chucks usually adopt the short taper hole of B16.
CHUMPOWER applies the convenience and features of Morse taper to the tool holder and developed a series of Morse Taper Tool Holders. For example:
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