Capacity Calculation for Vibrating Grizzly Feeder Diese Seite übersetzen. Vibrating Grizzly Feeder Feed Capacity The capacity of vibrating grizzly feeders is calculated according to the following formula: Q=3600 x f1 x f2 x f3 x L x H x V where, Q=Feed Capacity in (m3/hr) To obtain capacity in Tons per Hour, multiply by bulk density of the material Qt = Q x bd bd = 16 .