Screw Feeders The Vince Hagan Cement Screw Feeder features: Feeder includes special 1/2 pitch initial flighting (first 2'-10" at inlet) the balance is full pitch flighting to prevent packing High Speed screw (350 to 375 RPM) for high discharge rate "White-iron" ball bearings support the main shaft on 10 foot centers The hanger bearing boxes are mounted down for clean out and service Drive includes: motor, V-belts, sheaves, hubs, and belt guard (Gear reducer not required) Feeders include motor disconnect, motor fuses, emergency reversing starter, and panel all mounted in one NEMA enclosure All production rates theoretical Screw Feeder Capacity rating; 7" screw feeder 21 CFM 10" screw feeder 50 CFM 12" screw feeder 120 CFM