PM-932V Z-axis motor lift

[arty1]

The PM-932V mill does not come with a motor to lift the head. Using a geared AC motor from ebay, a flex coupling from Amazon, a simple machined interface plate, and some switches, see below for what I did. For <$200 and some scrap alum plate, it works pretty well. Although time will tell how long that Chinese motor is gonna last

Geared AC motor
The AC motor comes with a control box that I modified to accept a push button switch to activate the motor and a toggle switch to change motor direction (up/down). If you use the exact motor as shown, note that the push button switch is wired as NC (normally closed).
I measured the torque required to lift the head at ~8 ft-lbs. This motor is rated as 11.8 ft-lbs and is plenty powerful enough to lift the head with ease. Although it has a variable speed dial, I pretty much leave it untouched near max speed when using.
https://www.ebay.com/itm/304644776284

15-20mm Coupling
(The motor shaft is 15mm, the top of the z-axis lead screw is 20mm)
https://www.amazon.com/dp/B078VSCC19?ref=ppx_yo2ov_dt_b_product_details&th=1

Push button switch
https://www.amazon.com/dp/B0B3DSKCFD?ref=ppx_yo2ov_dt_b_product_details&th=1

Toggle switch
https://www.amazon.com/dp/B07VBRWFBG?ref=ppx_yo2ov_dt_b_product_details&th=1

 

[7milesup]

Cool!

I was looking at a similar motor for a conveyor belt drive on my woodworking drum sander.