A spreading device for spreading granular material, said spreading device comprising a disc (2)with a central bore adapted to rotate around an axel/shaft. The disc supports a number of wings (5) and comprises further flexible means (8) placed between an inner part of the disc and an in the periphery radially extending disc parts (10), said flexible means being adapted to allow a change of position of the disc parts in upwards and downwards direction to said disc parts the wings (5) are related, said change in position being adapted to take place when the rotation speed of the disc is changed.
