fords hammermill i think made by MS Myers-Sherman Co.

ok I have a very nice older fords unit, and this unit when new was powered by the belt drive from a tractor.. ok my question to you gurus and experts if I wanted to run this unit from a electric motor ! what horsepower is needed and how do I know the correct rpm and belt arrangements? and pulley size? help

A 5 HP electric motor won't power a very large hammermill. I bought one on an auction once, brother traded it on a regular grinder/mixer; salesman knew someone who was looking for a small electric unit.

(quoted from post at 14:24:07 10/11/15) ok I have a very nice older fords unit, and this unit when new was powered by the belt drive from a tractor.. ok my question to you gurus and experts if I wanted to run this unit from a electric motor ! what horsepower is needed and how do I know the correct rpm and belt arrangements? and pulley size? help

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If you are lucky there will be a plate on it stating the RPM the mill is to be run. Without a manual or a name plate one can estimate. My dad used a hammer mill driven by a 8N Ford for many years. For belt use, a 8N is run at 2000 RPM which results in 1316 RPM at the pulley. The pulley was 9" in diameter. I do not have dad's hammer mill but I do have a similar one, the pulley is 4.5" diameter. Therefore, my hammer mill would run at: 1316 RPM (input RPM) x 9" (driving pulley diameter) / 4.5" (driven pulley diameter) = 2632 RPM at the hammer mill. If you are using an electric motor then your input RPM would typically be 1750 or 3600 RPM and you can use the above equation to determine the pulley size.

The rated HP of an 8N on the belt at 2000 RPM (engine speed) is 27 HP. I remember as a kid dad would make that 8N work for all it was worth when grinding corn. To power with an electric motor one has to remember the mill is not only grinding grain it also has a large fan that separates the dust from the grain. A 5 HP electric motor would drive a hammer mill but I would expect the corn would need to be feed into it a couple ears at a time to prevent stalling.