Bead roller drive unit etc
 

https://www.banggood.com/220V-Brushl...r_warehouse=CN

We all know the sewing machine motor route but this seems a very neat, suitably controllable unit.
Foot pedal from the speed variation unit etc.
I havent tried one because Im already sorted, but does look promising.

50hz - for all those not using 60hz current .....
It's a good price for the power it offers.

She'll take 60HZ like a champ. We have a slew of imported sewing machines at work running 60hz, somewhere in the thousands haha

You'll still need to gear it down about 50:1 to make it useful for a bead roller. It's speed range is 200-4500 RPM. That's a bit fast.