Sifter Parts & Service Gyratory Sifter. Model: CS-1. The CS-1 Sifter is an all metal machine capable of providing from one to four separations of any dry product from 1/4 inch down to 400 mesh. The gyratory motion of the sifter provides a passive, gentle screening while keeping the product in contact with the screen at all times for maximum capacity. Syncrogear motor: ½ hp, 1200 rpm, 220/440 V, 3 phase. Hopper grinder. Syncrogear motor: ¼ hp, 1770 rpm, 230/460 V, 3 phase. Sifter drive motor: 1hp, 1725 rpm, 208-230/460 V, 3 phase. Hopper grinder. Inlets: (2) 10 in. dia. port, (1) 2 ½ in. dia. port. Outlet: (2) 10 in. dia. port. (1) 2 ½ in. dia. port. Overall dimensions: 6 ft. 8 in. L x 3 ft. 7 in. W x 7 ft. 11 in. H.(H17)(ACN189).