| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing device for a driving wheel preventing stick slip sound by smooth slipping with a counterpart member to be abutted. SOLUTION: This bearing device for the driving wheel is furnished with a hub wheel 1 integrally having a wheel mounting flange 4 on one end part, on which a cylindrical small diametrical step part 5 extending in the axial direction from it is formed, a bearing 3 for a wheel to support the hub wheel 1 free to rotate against a knuckle 2 and an outside coupler member 8 integrally having a shaft part 10 internally fitted on the hub wheel 1 free to transmit torque, wherein the outside coupler member 8 is fastened to the hub wheel 1 free to separate from it by a fixing nut 11 fastened on this shaft part 10, and it is possible to prevent generation of the stick slip sound as grease is discharged to a side surface 9a of a shoulder part 9 through a grease feeding hole 23 and lubricates a contact surface since a ring groove 22 is formed on the side surface 9a of the shoulder part 9 on the outside coupler member 8 and the grease feeding hole 23 communicated to this ring groove 22 from inside is drilled and provided. COPYRIGHT: (C)2007,JPO&INPIT
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