Rotor and method of manufacturing

A structure of a rotor in a rotating electrical machine having the rotor and a stator, wherein said rotor includes a rotor core, a permanent magnet inserted into an opening formed along a circumferential direction of said rotor core, and end plates provided to sandwich said rotor core in a direction of a rotation axis, said permanent magnet being fixed to said rotor core with an adhesive, an intermediate member is provided between said rotor core and each of said end plates, the intermediate member having a linear expansion coefficient falling between a linear expansion coefficient of said rotor core and a linear expansion coefficient of said end plates, and an outer periphery of each of said end plates in said circumferential direction has a portion placed to be radially inward with respect to an outer periphery of said intermediate member.