Screw conveyor, commonly called auger, is widely used transportation equipmentsin salt, chemical, feedstuff, grain, oil, and construction industries. It is suitable for horizontal, inclined, vertical transporting or granule, mealiness and small lump material with various transportation distances according to user requirements. It has simple structure, convenient maintenance and better seal, safe operation and easy loading and unloading at midway. Middle hanging shaft bears take rolling and gliding structures with dustproof seals