Cracking rolls, smooth rolls, flaking rolls - leonhard breitenbach Cracking rolls, smooth rolls, flaking rolls. are used for milling, reaming, crushing, breaking and flaking. The resistance to wear increases the economical.molino cracking roll smet,Cracking Mill_OLCBdd - BühlerLarg rolls fo high capacities. Extended roll life time. Automatic roll disengagement. Application. The primary application for the OLCB cracking mill is the.