
Vibratory Feeders: Hopper Transition And Installation Guide 5 The capacity of a vibratory feeder is given by: General flow velocities (v) are Eriez "B" model electromagnetic feeders with tray at 10° downslope = 35 ft/minute. Eriez HVF Mechanical feeders at 10° downslope = 50 ft/minute. Reduce "FR" by 2% for