An electric oil pump apparatus includes a pump housing a drive side
communicating portion, a motor housing having a pump side communicating
portion communicating with the drive side communicating portion, a
bearing portion arranged at one of the drive side communicating portion
and the pump side communicating portion, and a shaft rotatably supported
by the bearing portion. A one end of the shaft extends in the pump
housing and is provided with a drive rotor capable of feeding the oil in
response to rotation of the shaft. The other end of the shaft extends in
the motor housing and is provided with a permanent magnet.