Divided flywheel i.e. two-mass flywheel, has metal sheet body for forming annular duct for retaining spring unit and formed from punching mold part, where primary rotor is formed as two-piece with hub that comprises forging unit

摘要

The flywheel (1) has primary and secondary rotors (2, 3) rotatably mounted around a rotational axis (d) against effect of a spring unit (5). The primary rotor is formed as a two-piece with a hub that comprises a forging unit (6). A metal sheet body (7) forms an annular duct (16) for retaining the spring unit. The metal sheet body is formed from a punching mold part (14), where the punching mold part and the forging unit are riveted with one another by peripherally distributed rivets (21). The forging unit is radially and directly to the annular duct.