[asid61]

Originally Posted by Steven Smith

Not sure if it was the same chart, but here is a chart with some guidance on ballscrew/leadscrew design.

http://www.thomsonbsa.com/pdf/bsa_en...og_section.pdf

That's the one. It does depend on what diameter leadscrew you use, but running so fast with a 3/4" will not work. You are exceeding the absolute maximum with a fixed-fixed configuration even at the maximum speed of 2000rpm.