Gearbox power feed

[JFPark]

I have a 1965 step pulley with a gearbox power feed. I am looking for the motor rotation direction so that I can wire it correctly and not break anything. Any other information on these would be greatly appreciated.
Jim

 

[stephen thomas]

Wiring the gearbox or the spindle motor?

Either way, it is somewhat going to depend on your local power source
and....
Aren't both functions reversible?
The spindle motor is.
Is the gearbox reverse through gear shifting?
Is there a neutral position?
(My mill has a gearbox, but it is a SB and it does not break anything if accidentally wired in reverse. It just means the controls work backwards)
Good for you for checking, but i still think that dependent on how your 3ph feed is wired separate from the machine is going to be the factor. So figure out how to take the load off the gears if it seems to be a factor, wire it, and check.

If you wire it and the motor runs opposite the switch indication, just swap any 2 wires.

If you are using an RPC or (horrors) simple capacitor bank, the generated line sometimes works better if it does not include the line to the control voltage (to the magnetic coil assuming you have a magnetic starter). IOW take control voltage off the hot that runs through from the 1ph panel.

One beauty of 3ph is how darn simple it is.

smt

 

[stephen thomas]

Get it right before you do anything, reverse rotation will blow it up, ask me how I know.........

Well there's a very important data point.

Unfortunately, is it possible to provide a foolproof wiring diagram based on color?
Will the gear box motor turn the same direction as the spindle motor with the same wire paths? (I don't know)

smt

 

[Dan from Oakland]

If you move the feed lever to the right, the table should go that direction. If not, the motor is running backwards.
Those old PFs are pretty simple, what am I missing????

 

[stephen thomas]

If you move the feed lever to the right, the table should go that direction. If not, the motor is running backwards.
Those old PFs are pretty simple, what am I missing????

I thought the same as you, but it has been posited:

Get it right before you do anything, reverse rotation will blow it up, ask me how I know.........

smt

 

[rons]

I do.