| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing mechanism for a traveling reduction gear sprocket capable of easily adjusting a preload of a double row tapered roller bearing in a short time without increasing the number of parts. SOLUTION: Spacer members 2a and 3a are respectively provided between an outer ring 2 and an inner ring 3 of the double row tapered roller bearing 1 arranged back to back along the axial direction so as to support a hub 15 to which the sprocket is attached, the spacer member 2a provided on the outer ring 2 side is integrally formed with the outer ring 2 on both of the outer sides, and thereby the preload of the double row tapered roller bearing 1 can be easily adjusted in a short time without increasing the number of the parts. COPYRIGHT: (C)2006,JPO&NCIPI
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