Brake disk for disk brake of e.g. motorcycle, has friction rings including front sides and perforation cooling lines that are formed to partially extend at angle with respect to rotational axis of disk

摘要

The disk (1) has two friction rings (2, 3) including front sides (4, 5) with friction surfaces (6, 7), and a cooling air channel (8) formed between the friction rings having perforation cooling lines i.e. boreholes. The cooling lines extend from the friction surfaces to the channel. Each cooling line has a friction surface opening on the respective friction surface, and a cooling air channel opening in the cooling air channel. The cooling lines are formed to partially extend at an angle with respect to a rotational axis of the disk.