Standard screw conveyors consist of ‘U’ shaped trough with single helical screw flighting. Trough is fitted with a bolt on lid. All flighting is heavy gauge steel with constant pitch, constant diameter, mounted on heavy wall steel shaft. Shaft is supported between anti-friction bearings, mounted in flanged housings, on drive and tail gudgeons. Intermediate hanger bearings, consisting of a UHMW polyethylene bush, are supplied where necessary. Standard drive consists of a TEFC gearmotor with sprocket and chain transmission with a chain guard.