| 摘要 |
PURPOSE:To facilitate exchange of a bearing member by a motor wherein a disc bearing capable of being abutted against a thrust bearing supported by the bracket and a thrust receiver fixed to the motor shaft is loosely fitted to the motor shaft so that it may undergo unabled relative rotation manner. CONSTITUTION:A bearing 113 for receiving radial load acting on a motor shaft 106 and thrust load in the direction toward the load side (pump 200 side) is supported by a bracket 109 on the load side. A thrust receiver 114 opposite to the bearing 113 with a certain spacing is fixed to the motor shaft 106. A disc bearing 116 capable of being abutted against the side end face of the bearing 113 on the rotor 104 side at one side thereof and against the thrust receiver 114 at the other side thereof is fitted to the motor shaft 106 through a key 115, so that the bearing 113 may undergo unabled relative rotation manner with respect to the motor shaft 106. By so doing, even if the motor shaft 106 is subject to a thrust force directing to the load side, there occurs no relative rotation between the thrust receiver 114 and the disc bearing 116, so that the thrust receiver 114 will not be worn. |
