A cylinder motor apparatus includes a chassis, a shaft, a circuit board, a supporting member for supporting the shaft on the chassis in a freely rotatable state, a rotor fixed to the shaft, which has a stator housing having a circular, concave shape facing in a direction away from the supporting member and a magnet provided in the stator housing, a stator housed in the stator housing and fixed to the circuit board, and an electric circuit provided on the circuit board for controlling the rotation of the rotor.
This is a division of application Ser. No. 08/626,687, filed on Apr. 2, 1996, which was abandoned upon filling hereof which was a continuation of application Ser. No. 08/314,506 filed Sep. 28, 1994, now abandoned.
Priority Data
Sep 28, 1993 [JP] 5-241659 Dec 27, 1993 [JP] 5-331702
In a magnetic tape apparatus, a cylinder motor and a capstan motor are provided separately. A family processing is realized by fabricating a stator core of the capstan motor by using the same die which is used for fabricating a stator core of the cylinder motor. Each of attachment pieces is fitted into the corresponding one of recess portions provided at a flange-shaped attachment portion of a bearing holder and the inner end of the attachment piece is engaged with a rib provided at the flange-shaped attachment portion. The inner end portion of the attachment piece is screwed with the flange-shaped attachment portion.
