This grizzly feeder can be used for pre-screening as well as feedstock distribution before the crushing in mining, construction, power plant, and metallurgy industry. It has a novel vibration motor which can gain maximum of dual amplitude of 11 mm and a 1470 r/min frequency. The device can feed materials before coarse crushing evenly as well as can discard small particles like mud because of the effect of the screen bar. The grizzly feeder has an area cover of 0.9 m*2.4 m to 2 m*6 m. While operating the motor does not take part in vibration which can be damped by rubber spring or steel spring or composite one. It connected by universal coupling. The screen plate's angle can be adjusted from 0 to 15 degrees and is highly resistant to wear. The wearable line is constructed of cast steel or HARDOX . The grizzly feeder features a long life , high processing capacity, variable force . . .