Before crushing of seed it is desirable to pass the seed in a seed cracker machines, wherein seed is allowed to pass thr-ough two rotating chilled rollers of steel. In some cases the rolling operation is performed by passing seed through a set of five heavy rolls, staged vertically above each other. Several types of machines like disintegrator, edge-runners, reduction rolls high etc. are employed for the preliminary reduction of a variety of seeds like Mahua, Copra, Rape, Sesame, Ground-nuts etc. For Copra special cutters and break-ing machines are used. The cracked seed facilities efficient cooking and drying of seed later on in expeller kettles.