OIL-SEALED BEARING OF MOTOR AND MANUFACTURE THEREOF

PROBLEM TO BE SOLVED: To eliminate non-effective use of felt material to reduce dusts within a factory by circularly deforming a rod-type felt member in the direction surrounding the motor rotating shaft, and then placing the felt member in contact with the external circumference surface of oil-sealed bearing to hold the upper and lower parts of the oil-sealed bearing with a motor case. SOLUTION: A rod-type felt material is cut in the length which is slightly longer than the external circumference surface of an oil-sealed bearing 4 to form a felt member 51. The felt member 51 is circularly deformed in the direction surrounding the rotating shaft 3. Consequently, both ends of felt member 51 are placed in contact with each other to be accommodated within a shaft accommodating part in an end housing 2, so that the external circumference of oil-sealed bearing 4 is placed in contact with the internal circumference part of the felt member 51. When an armature rotates and the motor operates, the lubricant oil pushes put from a narrow hole of bearing, and it is then absorbed among fibers of felt 5 due to the capillary phenomenon in order to supply the oil. As a result, the felt material can be used effectively, dust in the processing of felt member can be reduced and abnormal noise failures of motor can be reduced.