What is the speed of machining a small CNC lathe with a length of only 750MM?

The power output of CNC lathe reaches the maximum when the rotational speed reaches 1000 rpm. The lower the rotational speed, the easier it is to "jam", so you can't choose too low rotational speed, but the large workpiece diameter limits the speed improvement.

In this case, you can generally solve the problem of iron filings winding by reducing the tool depth, increasing the feed rate and choosing the splayed chip breaker on the outer side of the blade. Of course, it is difficult to break chips if it is a high plastic material such as stainless steel, but you can try to make it curl and discharge on the tool to avoid winding.