STATOR CORE AND MOTOR

Provided is a stator core which is capable of suppressing an increase in iron loss by adjusting the press-in force of the stator core to a motor housing so that the press-in force is stable without being too large, and deformation or metal powder associated with press-in does not occur. Recessed surface portions (5f), which are recessed inward in the radial direction to the same extent within a larger range than pole teeth (5e), are formed on the outer peripheral surfaces where an annular back yoke (5d) intersects the pole teeth (5e) provided so as to protrude inward in the radial direction. 提供一种定子芯部，通过调节上述定子芯部对电动机壳体的压入力，以使压入力不会过大而稳定，不会产生伴随压入的变形或金属粉，从而能够抑制铁损的增加。在环状的背轭(5d)与向径向内侧突出设置的极齿(5e)交叉的外周面上分别形成有在比该极齿(5e)更大的范围内相同程度地向径向内侧凹陷的凹面部(5f)。