The present invention relates to agricultural balers, and more specifically to balers of the traditional rectangular type, i.e. balers which produce bales of crop material which are rectangular in side view. The baler according to the invention comprises a feeder duct (23)； and feeder means (25) operable within the feeder duct (23). The feeder means comprise a tine bar holding member (37) having rotatable mounted thereon at least one tine bar (39, 41) having mounted thereon a set of tines (43, 45). Said tine bar is rotatable about its own axis (47, 49) relative to the tine bar holding member and is rotatable together with the tine holding member about an offset axis (53). The feeder means further comprise a sun gear (65； 95) co-axial with and rotatable about the offset axis (53) relative to the tine bar holding member； means (67, 69； 97, 99) drivingly coupling the tine bar to the sun gear； and an adjustment system (71, 101； 121, 123, 125； 127, 129, 131) configured for active adjustment of the angular position of the sun gear (65； 95) about the offset axis (53) as said tine bar is rotated about the offset axis.
