| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic transmission having a reduced axial length by shortening an output gear supporting structure for the automatic transmission in the axial direction. SOLUTION: A bearing structure is constituted by a ball bearing 3 and a ball bearing 4 in such a manner that a plurality of balls are annularly arranged in two lines. It supports an output shaft at its inner periphery. The ball bearing 3 and the ball bearing 4 have the ball 31 and the ball 41, respectively, different in diameter. COPYRIGHT: (C)2005,JPO&NCIPI
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