PROBLEM TO BE SOLVED: To provide a pump capable of further restraining adverse influence on fluid by heating of a coil, for achieving the pump capable of maintaining expected performance of the pump, by restraining the deterioration in a permanent magnet.SOLUTION: This pump 100 includes a housing having a pump housing 31 forming a pump room 311 inside and a stator housing 32 forming a stator chamber 321 inside. The pump 100 also includes an impeller 1 rotatably arranged in the pump room 311 and forcibly feeding the fluid in the pump room by rotation, and a stator 2 arranged in the stator chamber 321 and generating a magnetic field for rotating the impeller 1. The permanent magnet is not arranged in the impeller 1 of this pump 100. Thus, for example, when forming a coating film or the like in the impeller 1, even if the impeller 1 is exposed to the high temperature, the deterioration in the permanent magnet can be restrained, and the expected performance of the pump can be maintained.
