| 摘要 |
<p>[PROBLEMS] To provide a brake disk capable of sufficiently relaxing thermal stress due to the thermal expansion deformation of a braking part. [MEANS FOR SOLVING PROBLEMS] This brake disk (10) comprises mounting parts (20) for mounting the brake disk on a wheel, the braking part (100) positioned on the outer periphery of the mounting parts (20) and allowing brake pads to come into slidable contact therewith, and connection arm parts (16) connecting the mounting parts (20) to the braking part (100). The connection arm parts (16) extend from the mounting parts (20) in one side (S1) direction (EX) different from the radial direction (R) of the braking part (100) and reach the braking part (100), and the mounting parts (20) adjacent to each other are connected to each other through at least the connection arm part (16).</p> |
