I'd send an email to Amana and ask them for clarification?
I don't understand how to use the info for that tool.

https://www.amanatool.com/pub/media/...1445372390.pdf

The chart says SFM of 1600-3200. If you use 2000 with their formula to find rpm, I get 30,000.
And if I look at the pic of the tool bottom, I count 16 flutes.
https://www.amanatool.com/48054-b-hi...#feed_rate.tab

If you use 16 flutes in the feedrate calculation, I get 860ipm at 18,000 rpm, which is clearly wrong. Even using 9 flutes would give too high of a number.