Ok all, I appreciate your feedback. You're right that I don't care about the RPC, lol.
I tested the machine on grid three phase, and my results are (to my way of thinking) inconclusive.
Here's the machine in question, a Boyce-Crane 8" jointer (fencing and knives removed):
Observations arguing in favor of a good motor:
-It does get up to speed relatively quickly, considering the inertia of the integral cutterhead
-It is a 1.5hp motor whose dataplate says 2A draw at high voltage. After the initial inrush, the amperage of all three legs settled in around 1.3A. This seems reasonable considering it wasn't cutting anything, but was still spinning a heavy-ish head.
-I ran it for a total of less than 4 minutes, but the bearings are not warm.
-Upon turning it off and disconnecting, I felt inside the back of the motor and touched the back of the windings all around. None of them were warm.
Observations arguing for something being wrong with the motor:
-I feel like I can see smoke coming out of it, but I suppose it could just be dust from sitting
-One specific side of the motor housing is getting pretty warm much faster than the rest of the motor. It's this side:
Another observation, although I can't categorize this because it may be normal. I've never been around a motor with no rear bearing, so I've never had occasion to observe this. The spinning part (is that called the armature?) is by far the hottest part of the motor. Is that the part that should be getting hottest? It's the part my finger is touching in the below pic.
Furthermore, I recorded video of the motor starting up twice so everyone can chime in. Does this sound and seem normal, can I trust my equal and reasonable amp readings on the three legs, and start using the tool? Or does some information here make you think I should be sending the pulleys to ditch this integral motor and convert the machine to a pulley drive that can use any spare motor I have lying around?
Startup #1: https://photos.app.goo.gl/XrAgv4dTrtYjFFQq6
Startup #2 (note what smelled like smoke, not sawdust, coming out of the back at the beginning: https://photos.app.goo.gl/kWKzAEiZ3CiUEAaF6
What say you?