An exciter apparatus for a vibrating machine, such as a screen machine or a feeder, comprising: an exciter body comprising a first bearing seat , said exciter body being configured for accommodating a lubricant and having a lubrication zone in a lower portion of the exciter body; a first bearing comprising an inner bearing portion and an outer bearing portion separated by a number of rollers located in a gap between the inner bearing portion and outer bearing portion , the outer bearing portion being attached to the first bearing seat such that the inner bearing portion is configured to rotate relative to the exciter body ; a first shaft attached to the inner bearing portion , the first shaft comprising eccentric masses causing the exciter apparatus to vibrate upon rotation thereof; wherein the first bearing seat and the outer bearing portion comprising a through hole allowing a fluid to flow through the first bearing seat and the outer bearing portion into the gap , and wherein the exciter apparatus further comprising a lubricant provision means configured to provide a lubricant from the lubrication zone to the through hole ; wherein the exciter apparatus further comprising a lubricant reservoir having an open upper end adapted to receive a lubricant, the lubricant reservoir being located adjacent the through hole and being located in the exciter body such that a lubricant located in the lubricant reservoir is provided to the gap by means of gravity; characterized in that the exciter apparatus further comprising a gutter arrangement provided on an inner end surface of the exciter body and configured to divert collected lubricant towards the through hole and the lubricant reservoir. an exciter body comprising a first bearing seat , said exciter body being configured for accommodating a lubricant and having a lubrication zone in a lower portion of the exciter body; a first bearing comprising an inner bearing portion and an outer bearing portion separated by a number of rollers located in a gap between the inner bearing portion and outer bearing portion , the outer bearing portion being attached to the first bearing seat such that the inner bearing portion is configured to rotate relative to the exciter body ; a first shaft attached to the inner bearing portion , the first shaft comprising eccentric masses causing the exciter apparatus to vibrate upon rotation thereof; wherein the first bearing seat and the outer bearing portion comprising a through hole allowing a fluid to flow through the first bearing seat and the outer bearing portion into the gap , and wherein the exciter apparatus further comprising a lubricant provision means configured to provide a lubricant from the lubrication zone to the through hole ; wherein the exciter apparatus further comprising a lubricant reservoir having an open upper end adapted to receive a lubricant, the lubricant reservoir being located adjacent the through hole and being located in the exciter body such that a lubricant located in the lubricant reservoir is provided to the gap by means of gravity; characterized in that the exciter apparatus further comprising a gutter arrangement provided on an inner end surface of the exciter body and configured to divert collected lubricant towards the through hole and the lubricant reservoir. <EOS>