Dual-mass flywheel and friction disc thereof

The utility model discloses a friction disc which is in a boss shape, the boss end face of the friction disc is used for being attached to a rear shell of a primary flywheel assembly, and the frictionend face opposite to the boss end face is used for being attached to a gearbox or a clutch. A bearing mounting hole used for mounting a rolling bearing is formed in the center of the friction disc, aplurality of notches are evenly formed in the friction disc in the circumferential direction, and the notches are the same in size and shape. The utility model further discloses a dual-mass flywheelcomprising the friction disc. The friction disc provided by the utility model can increase the rotational inertia of the secondary flywheel assembly and the dual-mass flywheel while the mass of the dual-mass flywheel is not changed basically, so that the production and manufacturing cost of the dual-mass flywheel is reduced. 本实用新型公开了一种摩擦盘，所述摩擦盘呈凸台状，且所述摩擦盘的凸台端面用以贴合初级飞轮组件的后壳体，与所述凸台端面相对的摩擦端面用以贴合变速箱或离合器；所述摩擦盘的中心设有用以安装滚动轴承的轴承安装孔