A centrifugal spreader (100) for manures, fertilizers and granular materials in general comprises a hopper (1) for containing the granular material, a dispensing container (2) which receives the granular material from the hopper and comprises at least one outlet opening (20) for the controlled exit of the granular material, a distribution disc (3) which receives the granular material from the outlet opening, a transmission assembly (4) which transmits a rotary motion to the distribution disc and comprises a rotation shaft (5) divided into a first (51) and a second (52) part which are connected or connectable by means of a connecting element (6) selectively adapted to fix the two parts with respect to rotation or to separate them.
