This feeder gets a family of bearing races to a centerless grinder. Quickly adjusted tooling handles 1 to 4-1/2 inch diameter races 1/2 to 1-1/2 inches long.

Parts are oriented diameter to diameter and then pushed face to face. Feed rate is 15 to 150 per minute, depending on part size.

Consider a feed unit, like this, for any ring or disc process, inspection or packaging effort, where you need 'em face to face.