Originally Posted by
HimyKabibble
The answer to your question is somewhere between 0.1 and 200 foot-pounds. It's kinda like asking "How big an engine do I need for a car?". There is no good answer with so little information provided.
First question is what machine are you running on?? Then figure out what materials you plan to cut, what tooling you plan to use, and what kind of removal rates are you expecting. THAT will determine how much power you can actually make use of, and what type, and size, motor makes the most sense. If you plan to drill 1" holes in stainless steel, then you'll need a big motor with lots of torque at the low end. But if your machine is an X2, you have to get used to the fact that you simply won't be able to do it at all. On the other hand, if you will be using small cutters in aluminum, then having high speed will be far more useful, and a lot of torque won't be required. Putting an over-sized spindle motor on a machine can be a recipe for serious personal injury.
Regards,
Ray L.