Abstract: Lubricating apparatus for lubricating a non-linearly traveling fitting on a conveyor. A lubricating coupler is mounted on a pivotally movable platform so that the coupler can move angularly with respect to the pivot axis. Slidable rod means on the platform enable the coupler to move substantially radially with respect to the pivot axis, so that the coupler can move over an area encompassing the expected range of travel of the non-linearly moving fitting. Locating means enable the coupler to align with the fitting. The coupler is maintained engaged with the fitting for a dwell time sufficient to adequately supply lubricant thereto. Cooperating longitudinal surfaces in the coupler body and a movable tip form simultaneous bearing and sealing surfaces for the coupler.