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How to Make a Ball Mill: 12 Steps (with Pictures), Mar 29, 2019· How to Make a Ball Mill Ball mills are a special instrument used to break up hard solids into a fine powder They are similar to rock tumblers in that the instrument is a rotating container filled with heavy balls to grind the substance.Suggested RPM for end mill, Jul 13, 2011· Suggested RPM for end mill ? , Using a 125 ball mill, I milled some troughs for the parts to lie in, then drilled and tapped 3/8-16 threaded holes on either side of the trough I made a strap 3/4" thick to use as a clamp and counterbored the clamp for nylon pads, hoping that these pads would make up for any inconsistencies in the parts .How to figure out the RPM on an unmarked electric motor ,, May 04, 2008· Hi all, I took an electric motor out of an old printer that I had, but it has no markings on it that would refer to the speed of the motor or the voltage Is there a way to figure it out manually? I'm trying to build a ball mill and I need to figure out the rpm to calculate the reduction ratio Thanks!Used Ball Mill Motors for sale Paul equipment & more ,, 1 HP Norton Ball Mill 15429 Manufacturer: Norton Used 25 Gallon Norton Chemical Process Products Jar MillPorcelain jar 20" diameter x 20" straight side Driven by 1hp, 3/60/230/460 volt, 1730 rpm motor thru a reducer, no ratioUsed Ball Mills | Ball Mills for Sale | Phoenix Equipment, Used, unused and refurbished ball mills available for a fraction of the cost of new US-based Phoenix Equipment is a global buyer & seller of ball mills, as well as other industrial equipment Check out our extensive inventory or talk to a knowledgeable representative today.