brushless DC motor for mini lathe

I just received a sewing machine 550W brushless servo motor and controller from VEVOR £65.99 including free 2-day delivery.

VEVOR 550W BRUSHLESS SERVO

Came with an A4 sheet manual which can also be downloaded as a pdf file via the QR code on the motor. I set it to 100 rpm minimum and 5000 rpm maximum with braking turned off and it runs amazingly quietly throughout. Torque at 100 rpm is enough that it is impossible to stall by gripping the pulley. I will replace the potentiometer intended for pedal control with a rotary pot.

Andrew.

Edited By Andrew Entwistle on 07/09/2022 22:23:50

I just got the 750w 1HP version as an experiment and stuck it on the back of my Drummond, bolted onto the top of my Higgs "guaranteed forever" motor

Works great but I wouldn't use it for too long on a proper semi-industrial lathe

Will end up using it for either light milling or as my main Cowells unit

A very simple reliable system at a nice price

Edit, I recommend using the 50mm wheel, swap out the 75mm

A 24mm holds the belt wheel and a 19mm undoes the nut, it taps off the key by hand, don't let the key drop out

If you need the motor to reverse, hold down the S key until the little light comes on in the bottom right corner of the main display

Edited By Ady1 on 07/09/2022 23:46:54

I know this is an old thread but if anyone needs a wiring diagram to convert a jack industrial sewing machine motor to a potentiometer including what resistors and pot to use I have it, I fitted one on my Pultra 17/70 under the bench and it was the best thing I did torque amazing even very slow, I even used the cast box to put the pot in just make sure it and everything is earthed.

Dell

I know it been mentioned before in this thread but the Hall device (and any potentiometer that is wired in its place) is NOT ISOLATED from the incoming mains supply so installing in a grounded metal enclosure make sense.

If using a plastic enclosure its best if the potentiometer has a plastic shaft too, also any wiring to the potentiometer should be treated as if it was carrying mains voltage.

Ian P

Edited By Ian P on 10/07/2023 20:35:32

Hi Dell, I would be very interested in in your diagram for converting a sewing machine motor to a potentiometer.

Thanks!

Mike

Dell, I also am interested in modifying the hall control to a pot.

I expect there are several others out there as well.

Regards, John

I took the spring off my motor switch and put a plastic knob on it. I also put a friction pad on the arm to prevent accidental operation. I now have it mounted above the lathe and find it really convenient to operate.