The experiment was conducted to study the effect of the time shelling process by two levels of 30 and 40 seconds, and Sheller feeding rate with three levels of 4, 7, and 10 kg on the specific energy, specific capacity, unshelled grains, and broken kernels maize. The statistical analysis showed that increasing shelling time from 30 to 4 seconds led to a significant increase in specific capacity and broken kernels, moreover leading to a significant decrease in specific energy and unshelled grains. The increase in sheller feeding from 4 to 7 then to 10 kg, to increase specific capacity, unshelled grains, decrease in specific energy and broken kernels. The least specific energy was 0.154 kw.kW.kg-1 and the highest specific capacity was 6.66 kg/kw.h-1 with the time of shelling 40 second and feeding rate of 10 kg. Whereas that results shows there is no significant effect of the interaction between the time of shelling and sheller feeding rate in the unshelled grains and kernels.