Patent ID: 7825548

Claim:
A cylindrical linear motor comprising: a stator that has a plurality of coils coiled in a cylindrical shape and serving as electrical loading means, the plurality of coils being arranged in an axial direction on an inner side of a metal pipe made of a cylindrical magnetic material; a mover disposed to face an inner side of the stator with a magnetic gap there between and having a plurality of permanent magnets serving as magnetic loading means, the plurality of permanent magnets being inserted in the axial direction into a cylindrical thin can made of stainless steel extending in the axial direction; support mechanisms that include shafts inserted into the mover, and shaft support members for supporting the shafts such that the mover is movable in the axial direction at both axial ends of the metal pipe of the stator; and shaft receiving members each disposed at both ends of an inner side of the can to be adjacent to the permanent magnets, each of the shaft receiving members having concave portion, therein, wherein each of the shaft receiving members contacts the inner side of the can, and a cone of the shaft is always fixed to the concave portion.