During the foundation laying the channel for silo unloading screw auger must be left on the surface of the concrete foundation. The FOPRO silo unloading screw augers are available in different diameters according to the carrying capacity of the auger.  All FOPRO screw augers are U shaped and auger upper cover connection places are fastened with bolted system. Bottom sweep auger is used in silos with fiat bottom to unload the rests of the grain inside the silo; the auger collects the material inside of the silo rotating into 360° and directs the material towards discharge openings located on the unloading auger.

These equipments are used for inclined and horizontal handling of grain according to the capacity needed. There are 2 types of screw augers: tube type and U - type

Sweep screw augers which are used to unload the grain inside of the silo can be produced in 2 different types:
1 - Sweep auger system with constant auger rotation and constant wheel speed.
2 - Sweep auger system with constant auger rotation and regulated wheel speed.

The grain unloading process can be operated in 2 different ways:

1 - The screw auger unloading system which capacity is up to 100 tons/hr is recommended to be used in silos with concrete foundation
2 - The chain conveyor unloading system which capacity can be more than 100 tons/hr is recommended to be used in silos with concrete foundation and tunnel unloading system.

Sweep Auger:
Sweep auger handles the grain from side to centre of the silo. There are two types of sweep auger.
- Mobile and - immobile. The mobile sweep auger is gear reducer driven and equipped with an electric device against cable twist.

Unloading Auger:
The unloading auger is used to handle the grain from inside to outside of the silo. It’s easy to take the unloading auger outside of the grain full silo. It is placed in the auger channel of the silo foundation. These augers are equipped with one centre and two intermediate sumps for easy unloading by the help of the sweep auger.