UMB series grill vibrating feeders are desingned to feed to primary jaw crushers and impact crushers the materials it is product fixed and mobile. Grills on the feeder seperate materials which not wanted to take down on feeder belt drectly. Dust in the material and similar matter are sent away by By pass system as waste. Vibrating feeders driving systems are two options. These are vibromotor and gear system-eccentrict shaft. Eccentrict weights shafts are decorated with heavy service type bearings.