PURPOSE: To facilitate the attachment or detachment of a supporting stand, stator and spindle shank by disposing bearings between the spindle shank to which the rotor of an electric motor is fixed and a sleeve for fixing the stator of the electric motor to the supporting stand.

CONSTITUTION: This twisting spindle is obtained by connecting the stator 10 of an electric motor 9 to a supporting stand 1, fixing a rotor 11 to a spindle shank 2 and disposing a built-in bobbin holder 3 at the axially extended portion of the spindle shank 2. An attaching member is installed on the supporting stand 1 with a sleeve 12 disposed on the supporting stand through an elastic member 13, and fixed to the housing of a motor. Bearings 14, 15 are disposed between the spindle shank 2 and a bush 16 detachably disposed on the inside of the sleeve 12. The spindle shank is not fixed to the supporting stand.