The Legend batch ball and rod mills are designed for laboratory grinding of samples, minerals, and ores. Typical feed size should be 1/8" or smaller for ball mills and 1/2" or smaller for rod mills. However, larger feed size may be possible (grinding times will increase substantially for larger feed).
Mills require a variable or fixed speed drive roll (sold separately).
Ball mills typically operate from 55 to 70 rpm.
Rod mills typically operate from 45 to 80 rpm.
O-ring sealed lids allow for either wet or dry grinding.