STEPPING MOTOR

PURPOSE:To apply a proper pressure to a shaft and at the same time to maintain the spring performance of a thrust spring properly by welding and fixing an intermediate bearing to a frame. CONSTITUTION:A resin bearing 34b is lightly press-fitted into a fitting hole 32b provided at a frame 32 and a metal bearing 34a is fitted into a fitting hole 32c. Then, a yoke assembly is laid out at the base edge part side in the axial direction and the metal bearing 34a is inserted into a diameter-reduced part but the opening side of a case body 33 is laid out so that it faces the frame 32 and does not contact a bent piece 32a. Then, the total length from a reference surface to the bent piece 32b is determined with the reception surface of a thrust spring 42 as a reference. Also, aligning with the inner diameter of the innermost periphery surface of a yoke assembly is performed following the inner diameter of a metal bearing 34a and a resin bearing 34b and then the metal bearing 34a is welded and fixed W to the frame 32 in three directions by laser welding positioning it on the aligned axis.