High-efficiency vibrating feeders have easily replaceable wear liners and fewer moving parts than conventional apron feeders, reducing wear and maintenance costs.  The laminate eccentric weights are supported by the bearings, not the shafts. The bearings are standard off the shelf spherical roller bearings and run in an oil bath.  The pan liners are constructed of A/R wear liners and the sideplates that run the full length of the feeder and have a reinforcing doubler plate around the through-the-body twin shaft assemblies. Integral mounting pad is included for hydraulic variable speed drive, if desired.  They also have a structural support cross member under the pan, and heavy duty springs with spring pads to attach to your support frame.