For achieving small-
sizing and high efficiency by improving heat
radiation of coils, and further for simple-construction to be easily disassembled, thereby being environment-friendly from a view point of recycling, an electric rotating
machine comprising: a
stator 1a being constructed by inserting coils 10a into slots 11 of a
stator core 2a; an outer frame 4 being divided into a plurality thereof, so as to cover periphery of the
stator core of said stator; a pair of bearing holder portions 6a and 6b, each having a fitting portion 35a or 35b to be fitted into an inner
diameter reference surface 25a at both end portions of said stator and being provided with a bearing 8a or 8b at an axial center portion thereof, and being attached at both sides of said stator core so as to cover coil end portions dropping out at both sides of said stator; a squeezing mechanism (30, 32a, 32b, 6a, 6b) fixing the outer frame at an outer periphery of the stator core, by a wedge function between each of the bearing holder portions and the outer frame due to a squeezing function of attaching the each of said pair of bearing holder portions at both sides of said stator core; and a rotor 3 being formed with an escaping portion for escaping from an outer
diameter of a portion opposing to a fitting portion of each of said bearing holder portion, rotatably positioned within said stator core.