X-axis Servo 70 Power Feed Running Sluggishly

It's a "Servo Products" branded power feed from back when they were in Pasadena, California. Looks like just a standard universal motor to me, as I see no tach or hall effect, etc.

Unfortunately the controller board is no longer available. The closest match would be the model 150, but the physical dimensions inside are different and the 150 board will not fit.

Yes, lots of bearings. Radial ball and needle type. I think I might strip everything and just replace the bearings if it comes to that.
 
Ok, thanks for everyone's help but it's all for naught.
The whole thing literally blew up in my hands this afternoon. Must have been some kind of short when I reassembled. After about 30 minutes of light use, there was a very loud POP! and the rubber plug on the side blew out and all I could smell was the magic smoke of an electrical nature. It was powerful enough to blow my hand off the joystick and scared me pretty good while I counted my fingers to make sure I wouldn't be spending the evening in the ER. Luckily I was done with my milling job and I still have all 10 digits.

Don't feel like working anymore today but maybe I'll do a postmortem and show the carnage here soon.

Again, thanks for all the help.
 
That 150 uses a compound-wound DC motor, which would be quite suitable for that application. It's a shunt-wound motor with a small additional series winding to improve regulation.
 
Sorry about your misfortune! When these things happen to me I look on the bright side - at least now you KNOW it's broken. In fact, I've helped many a piece of kit along with a BFH (computer equipment especially) in order to get it into proper non-working specification for my peace of mind. :D
 
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