Extruder elevator is used to elevate lumpy, granules or powdery material from Bottom to the given height in closedcasing. Elevators are of Centrifugal, Continuous or Positive discharge type. Bucket elevator consists of a series of Buckets mounted on chain or belt operating overhead and foot pulleys and are Rotated by means of drives. Takes up provides to compensate for variation in Length of chain or belt. Material is fed at the bottom from hopper, fills the Volume of buckets, which take materialfrom bottom to upward and throw it in Discharge spou. Asteel casing usually encloses the bucket line and head andFoot pulleys. Range of height is up to 10 meter and the capacity is up to Required ton/hr. Selection of shape of bucket, type of drive, selection chain or Belt, type of takesup, type of elevator, type of discharge, type of housing, Construction of material etc. depend upon requirement.