| 摘要 |
A clutch drum is formed from a single piece of material. The clutch drum includes an inner surface having a plurality of spline portions interspersed with inner wall spaces. Each spline portion includes at least one slot to form at least one snap ring groove within the clutch drum. The outer surface of the clutch drum is smooth and continuous and adapted to receive a brake band. The clutch drum does not include any perforations or breaks through the single piece of material forming the cylindrical portion of the clutch drum.
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