Their are five models of sieve shaker:S1008A) Sieve shaker electrical with rotary, gyratory motion & tapping action for 200 mm dia 220V, 1PhACS1008B) Sieve shaker electrical for 200 mm dia with timer 0-60 minutes.S1008C) Sieve shaker electrically for 200 mm dia with Digital timer 0-99 min.S1008D) Motorised Sieve Shaker: The sieve Shaker can carry up to 8 Sieve. It is driven by a H.P Motor. The Sieve table is inclined from the vertical axis & the direction of inclination changes progressively in the clockwise direction. In the addition to the gyratory motion of the table, there is tapping motion as well. Operating on 220 V single phase AC. A Digital timer adjustable from 0-99 minutes is incorporated as an integral part of equipment. Accessories: Adaptor for 300 mm dia.