Factors affecting performance of job's tears shelling unit

The objective of this research was to study the effects of types of drum, clearances (CR) and drum speeds on performance ofjob's tears shelling unit. The types of drum were peg tooth and rasp bar with an open shelling drum. Clearances of 10, 15 and 20 mm were tested with the drum speeds of 350, 400,450 and 500 rpm. The results found that the rasp bar drum with 10 mm of clearance and 400 rpm of drum speed were suitable condition for shelling with capacity of 12.98 kg/h and efficiency of 99.76 % which provided 71.65% of whole and small damage kernels (% FK + % KQ).