Vibratory bowl feeders are not the only way to feed parts. One alternative is the centrifugal feeder. This type of feeder is comprised of a rotating center disc mounted on an angle and a horizontally mounted rotating bowl. The disc and the bowl rotate independently of each other at variable speeds. At its highest point, the edge of the disc is slightly higher than the running surface of the bowl, which enables the parts to load.
These feeders do not use vibration to singulate and orient parts. Instead, they rely on centrifugal force. Parts drop onto the rotating disc, and centrifugal force whisks them to the periphery of the circle, where they encounter mechanical and pneumatic tooling designed to capture parts that are correctly oriented and reject parts that are not.