Electric oil pump and method for making electric oil pump

A method of producing an electric oil pump which includes a motor part having a shaft disposed along a central axis that extends in an axial direction;

• and a pump part that is positioned on one side of the motor part in the axial direction and is driven by the motor part via the shaft and discharges oil, and in which the motor part includes a rotor fixed to the other side of the shaft in the axial direction, a stator disposed to face the rotor, a coil provided in the stator, and a motor housing in which the rotor and the stator are accommodated, in which the motor housing includes a bearing that supports the shaft that protrudes from the motor part to the other side in the axial direction, a tubular bearing housing that holds the bearing, and a bus bar assembly connected to a coil end of the coil that extends from the stator, the method comprising:
• a stator press-fitting process in which the stator is press-fitted into the motor housing from the other side of the motor housing in the axial direction;
• a bus bar assembly insertion process in which the bus bar assembly is inserted into the motor housing from the other side of the motor housing in the axial direction and the bus bar assembly is disposed near the stator;
• a coil connection process in which a coil end of the coil is electrically connected to a connecting bus bar of the bus bar assembly;
• a bearing housing press-fitting process in which the bearing housing is press-fitted into the motor housing from the other side of the motor housing in the axial direction;
• and
• a bus bar assembly fixing process in which the bearing housing is fixed to the bus bar assembly through a fixing member.