Definition of Morse taper in English:

Morse taper


  • A taper on a shank or socket that is one of a standard series having specified dimensions and angles.

    • ‘Old twist drills are, in fact, an inexpensive source for Morse tapers.’
    • ‘To alleviate this complication, a screw was added to force the two Morse tapers in compression.’
    • ‘It is an object of this invention to modify the Morse taper in such a way that the components can be separated with ease.’
    • ‘First, the dimensions of Morse tapers are not standardized, they vary from company to company.’


Late 19th century: probably named after the Morse Twist Drill Co., Massachusetts, US.