| 摘要 |
PROBLEM TO BE SOLVED: To make axial size of a power transmission device with a sub clutch device, a main clutch device and an electromagnet compact. SOLUTION: In this power transmission device 10 with the sub clutch device 20, the main clutch device 30 and the electromagnet 22, the electromagnet 22 is disposed on the internal diameter side of the main clutch device 30.
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