RAIL BRAKE DISK

摘要

The invention relates to a brake disk for rail rolling stock, to be secured to a wheel to be braked and to co-operate in terms of braking with a brake pad that is mounted on a mobile jaw and can be brought into contact with the disk by the action of control means. The disk comprises rigidifying elements (20) on an inner face (16) opposite a braking face, said rigidifying elements comprising ribs (22-25) oriented at least in radial and concentric directions in relation to a central axis (X) of the wheel so as to control the deformations of the disk, caused by the braking heat. The disk also comprises at least four inner blind holes (44, 46) opening up towards the wheel and used to receive pins for centring and pre-mounting sectors of the disk on the wheel, at least two of said blind holes (46) being oblong.