| 摘要 |
The present invention provides a wet type multi-plate clutch comprising a friction plate including friction materials secured to both surfaces of a core plate provided at its inner diameter side with a spline portion, a notch groove opened to the inner diameter side and having a terminal portion positioned between the inner diameter side and the outer diameter side and a through groove extending from the inner diameter side to the outer diameter side, and a separator plate provided at its outer diameter side with a spline portion, and wherein a retracting amount at the inner diameter side of the friction material secured to the friction plate is greater than a retracting amount at the outer diameter side.
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