Our Benchtop Ball Mill LBBM-A20 have features like Speed Range of 60 to 570 ± 10 rpm (adjustable), Roller Size of Φ 25 × 260 mm, Mill Mode of Dry and Wet Milling, and more. ... To guarantee safe operation in laboratory settings, benchtop ball mills come with several safety features. To avoid mishaps and guarantee user safety throughout the ...