Screw Elevator

Standard screw conveyors are made out of carbon steel or stainless steel depending on the operating conditions.Sizing of screw conveyor and pitch of flight is determined with the reference to CEMA standards.
Intermediate hanger bearings are provided for long conveyors for the screw to maintain allowable sag in the rotating member.Proper selection of angular speed for the Screw conveyor is critical in order to avoid wobbling effect during operation.The tough filling factor is selected according to nature of material and also with reference to CEMA standard with typically value of around 30%, however, the drive power rating is calculated based on 100% filling factor.
For high temperature application a jacketed trough and box type flights are provided with circulating cooling water through, shaft & box flights. The quantity of cooling water depends on the properties & temperature of conveying material.