Chris, What symtoms are you getting, usually wrong inertia match shows up when you want to move an axis in rapid and a servo goes into overload, or a stepper will stall, there are quite a few programs where you can plug in your numbers and find out, the magic number is usually to keep the motor to load inertia ratio lower than 10:1 . the answer of course is to apply a reduction of some sort, fortunately the ratio is reduced by a squared of the reduction.
Al
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.