What diameter saw?
What depth of cut?
How much runout?
What cutter style?
With out those we are just guessing
Here is my best help:
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From a SFM perspective that makes sense but if he is saying it's jamming (stalling?) it may not have the torque at 50RPM to use that cutter. Do HAAS mills have high/low gear/windings? Their website shows an override with M41/M42 but also states it should switch automatically. Maybe verify that you are in fact in low.OK, 4" so start at 50 RPM!
It's keyed, I have the blade flipped backwards and running m04 on a haas vf3. I don't think it has the nuts to go this slow... it isn't overloading my spindle yet but looks like it's struggling. Before it would fault out and hasn't yet. Would running 100 rpm at F.7572 work better I wonder? I'd just be doubling my current feed/speedsDoes your saw and arbor have a key?
If not, it should.
What is getting jammed? the tool on the arbor, or the spindle?
Edit: wonder if your machine has the balls for 50 or 100rpm.
Double edit: I'd be extra careful running the blade backwards (m4) due to it wanting to push the nut counterclockwise. Again, with that, a key would help.
Those guys who run saw blades with no key in the arbor make me sick. IDK how anyone gets those saws to not want to spin.
I flipped the blade and run m04 due to how I have to hold the part. M03 pulls the part away from the backstop while m04 pushes it into it and reduces the chatterI've had better luck spinning the blades forward! Seriously, what does "backwards" mean?
Also, no matter how you feed or whatever else you do, if the SFPM is too high the cutting edges of the teeth will be wrecked in short order.
An eighth inch thick blade might be beyond that machine at 4" diameter.
It's hard to see but I have it dowel pinned in the back jaw and the front jaw has a lip that holds the part against the back all the way to the head. Still not the best set up, but only way I can get this part out. Only have 160 of them to makeI would not hold that part like that. Looks like a very flimsy setup using a vise like that. You really can't have your part move at all for this.
A fixture or atleast much better supporting steel soft jaws and that cutter in a heavier machine will walk right through that part.
This is a situation where the ancient old manual horizontal mill (or almost anything else really) will walk all over a new Haas.