| 摘要 |
PROBLEM TO BE SOLVED: To provide a bearing device with an inexpensive position error absorbing mechanism formed simply by replacing a bearing only, instead of applying a change to an existing planetary gear device, while imparting an elastic structure to a planetary wheel bearing itself. SOLUTION: A pair of single train tapered roller bearing 6 are arranged in symmetry to the center of a planetary gear 4. A stepped portion, namely, an escape portion 20 is formed on either outside of the inner diameter face of an inner ring 12 thereof, namely, on the side of carrier flange 7 (an area encircled by a symbol A). An axially positioning spacer 21 is arranged inside the stepped portion, namely, the escape portion 20. COPYRIGHT: (C)2007,JPO&INPIT
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