I'm face milling steel plates from 45mm to 30mm. I'm using a 3inch 5 tooth facsimile with seco m15 inserts. Their site recommends ds 850 ish rpm with 50ipm feed at a .11 depth of cut. If I run ANYWHERE close to that my machine is destroyed. I can barely get away with 600 rpm at 4ipm at a .05 depth of cut. I'm relatively new to this side of the trade, I mostly dealt with manual lathe and milling but I've been tasked with mastering this. My machine is a mill port rhino IV with centroid control panel, 5000 rpm max.Am I being a dumb baby and can actually run these numbers or am I missing something.