A fluid supplying device (4) supplies several parts of an agricultural machine with a fluid. This fluid supplying device (4) comprises a fluid inlet (19.1), several fluid outiets (9.1, 9.2, ... ), a housing (1) which defines a buffering cavity (10), a distributing member (2,3) with a distributing aperture (12), and a drive (17). The distributing member is positioned between the buffering cavity and the plurality of fluid outiets (9.1, 9.2, ... ).. In every rotational position of the distributing member (2, 3) with respect to the outiets (9.1, 9.2, ... ) the distributing aperture (12) overlaps with one fluid outlet (9.1, 9.2, ... ). The drive (17) permanently rotates the distributing member (2, 3). The fluid is conveyed to the buffering cavity (10), through the distributing aperture (12) and the fluid outlet (9.1) currently overlapping with the distributing aperture (12) to at least one part of the machine.