Ya know, the thought crossed my mind. But how would I make an adapter with no mill?Sorry to hear about the motor's demise. What I would do is get a standard 56C frame 3 phase motor off eBay and make an adapter plate to fit it to the machine. Then get a VFD and toss the RPC. I know the urge might be to get a single phase motor but resist. Knob controlled speed is too nice. On eBay, a good name-brand (sometimes even new) 3-phase motor can be under $100. Don't worry about getting one that's "inverter rated". Any modern 3-phase motor will be fine on a VFD in a home shop environment. For the VFD, I probably wouldn't bother with eBay because new ones are not that expensive. A nice Hitachi is around $200.
Sent from my iPhone using Tapatalk
You might be able to find an exact replacement motor on ebay. This motor might just drop in: http://www.ebay.com/itm/REPLACEMENT...ING-MACHINE-VSM3-SP-STEP-PULLEY-/401200615543
Mill motors are normally ''special'' in that they have a non-standard end bell for mounting and an odd shaft length (extra length) and diameter. Many are a roughly equivalent to a NEMA 145TC frame motor or the metric equivalent.
I suspect your motor is a 2HP. First measure the shaft then compare to a NEMA 145TC frame motor. It also may be a metric motor.
You absolutely need a reversing motor, when you shift into back gear, the spindle rotation reverses relative to the motor.
I would go with a 3 phase motor and a sensorless vector VFD, that way you get a very wide speed range.
But how would I make an adapter with no mill?