Heavy Duty for 8" & 12" Test Sieves. This Sieve Shaker is durably constructed and is run by ¼ HP Electric Motor 220 Volts AC through reduction gear. Designed to carry upto 6/7 Test Sieves of 200 mm Dia (8") with one set of lid & pan. It reproduces circular and hammering motion (revolution approx. 280 to 320 RPM and tapping approx. 140 RPM to 160 RPM.) No foundations are required. Unit is supplied without Test Sieves.