Winder for an endless lane of a plastic web (2), with a revolving unit (6, 6′, 55, 90), which is constructed so as to be rotatable about its axis (16) and has at least two winding shafts (10 to 12, 10′ to 12′) running parallel to its axis, onto which winding cores (17) can be loaded, then wound with the web (2) to a roll (18), finally unloaded therefrom again as finished rolls (18), wherein on both sides of the revolving unit (6, 6′, 50, 90) support arrangements are arranged, in which the winding shafts (10 to 12, 10′ to 12′) are supported at their corresponding ends therein, and wherein the support for one end of the winding shafts (10 to 12, 10′ to 12′) is constructed so as to be detachable, such that the respective winding shaft (10 to 12, 10′ to 12′), with released support, can be loaded and unloaded from this end, characterized in that the detachably constructed support arrangements each have a gripper arrangement (36 to 38) with a two-armed scissor unit (39 to 41), the scissor arms (42, 43) of which surround the winding shaft (10 to 12, 10′ to 12′) in the closed position and are pivoted away therefrom in the open position.