A braking assembly (1) is described for a fabric (3) being supplied to at least one fabric working machine, comprising at least one system of rollers through which the fabric (3) passes by sliding along a sliding direction (V), the system of rollers comprising at least one rotary roller with braked rotation (5), at least one first idle transmission roller (7) of the fabric (3) placed upstream of the rotary roller with braked rotation (5) and at least one second idle transmission roller (9) of the fabric (3) placed downstream of the rotary roller with braked rotation (5). A fabric working machine (10, 50) and a system (30) for introducing fabric in fabric working machines comprising at least one of these braking assemblies (1) are further described.
