Turning

Subject:
Other option....
Response To:
Variable Speed?? ()

Brian Roberts
Since 3 phase motors are relatively inexpensive and easy to find it would be the way I would (and did) go.

Powered by a Variable Frequency Drive (VFD) the 3 phase motor can be driven by single phase power.

BTW....I would leave the step pulleys in place so you can vary the torque as well.

For well under $20 I added a speed sensor to mine so I had a display of actual lathe spindle speed regardless of which step the pulleys are on. Most VFD's will give a display of motor RPM....which will not be an accurate display of actual spindle speed unless it's direct drive....or 1 to 1 pulley sizes only.

The speed indicator...while not a necessity...is really nice to have!

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