Disc brake for a heavy truck and a vehicle including such a disc brake

Vehicle having an axle pressure between 6 and 14 tons, comprising a disc brake having a disc-shaped rotor (8), consisting of a cast iron alloy and having an active radius R, and a caliper (30) supporting a brake lining (32) which is intended to be pressed against said rotor (8) during braking, in which said brake lining (32) has a radial extent B, characterized in that a ratio B/R between the radial extent B of the lining (32) and the active radius R of the rotor (8) is less than 0.38 and thereby substantially limiting a number of band shaped wear modes.

A disc brake means for retarding motion of a heavy vehicle and for limiting a number of band shaped wear modes, said brake means having an axle pressure between six and fourteen tons and comprising a disc-shaped rotor (8) consisting of a cast iron alloy and having an active radius R and a caliper (30) supporting a brake lining means (32) for pressing against said rotor (8) during braking, said rotor (8) and brake lining means (32) absorbing a brake power corresponding to a braking torque between 12 and 25 kNm and said brake lining means (32) having a radial extent B and characterized in that a ratio B/R between the radial extent B of the brake lining means (32) and the active radius R of the rotor (8) is less than 0.38.