The Munson CIM-34-SS sanitary stainless steel pin mill offers coarse to fine grinding of friable powders, flakes and granules. The high-speed rotation of the inner disc creates centrifugal force that accelerates bulk material entering the central inlet of the opposing stationary disc. As material travels from the center to the periphery of the discs, it passes through 5 intermeshing rows of rotating and stationary pins; the desired particle size distribution is obtained by controlling the rotor speed.