Abstract: A flaker mill provides for the flaking or rolling of processed grains such as corn and milo for livestock feed. The mill is powered by a relatively small motor which turns at a higher speed than the drive sheaves for the two rollers within the machine. A speed reduction transmission, such as a planetary transmission, is used to reduce the motor output speed to the proper speed to drive an output sheave from the transmission and to provide the proper torque for the two rollers. Each of the rollers has a sheave extending therefrom, for a total of only three sheaves for the entire machine to drive the two rollers. The machine does not require an idler pulley or sheave for belt tension adjustment, as the arcuate adjustment motion of the rear roller bearing housings disposed between the fixed front roller bearing housings and the transmission output, substantially compensates for positional changes in the belt run.