PM 45 questions

Re: PM 45 questions

Sam Dean

>Hi John,

I have an old model 45 as well, one of the first in the late 50's / early 60's. The reeves drive makes all kinds of noise, but the headstock shouldn't be getting hot or making a "rumbling" noise at all. Sounds like the bearings are shot. I've changed mine a couple of times, it's really not that hard. I put a 1 1/2 HP single phase motor on mine under the cabinet and haven't had any lack of power issues at all - it'll only swing 12" anyway. The belt will slip before the motor will stall.

Send me an e-mail if you need any help with it.

Thanks,

Sam

Re: PM 45 questions

john jesseph

>Thanks Sam;

I will contact you off list about this-

I will go ahead and change the bearings and belts, give it a good going over, and probably replace the motor. Doesn't look like there's much room in there for a 1.5 hp motor- how did you get it to fit? What brand and model?

Thanks again!!

John J., who is going to go turn a couple more legs...

Re: PM 45 questions

Sam Dean

>Hi John,

It's a Dayton, Capacitor start, ODP motor. If you use a TEFC motor, the fan shroud makes it too long to fit in the cabinet. Since the ventalition is very poor (inside the stand), I purchased a motor with thermal overload protection, but have yet for it to shut down. The motor does get hot after a few hours of heavy turning, but not too hot to touch. I'll see how it does this summer; if I have too, I'll hook up a small fan to keep it cool.

Before I found this motor, I was ready to cut a hole in the cabinet to mount one on the outside. Always an easy option if you want 2 or 3 HP.

Thanks,

Sam

Re: PM 45 questions

Ben Aragon

>John,

Sounds like your bearings are bad, I�d replace the belt as well.

Sam is right the adjustable sheave drives are notorious for noise and vibration. He is also correct in that the belt will slip before the motor will stall if you install a larger motor. This is do to the spring in the sheave can�t pull the belt tight enough.

I think you�ve made the right choice in planning to put the Variable Frequency Drive and 3-phase motor in the lathe with the 4-step pulley. With this combination your belt won�t slip and your not loosing horse power. You will also have a huge speed range with minimal loss of torque.

There were two reasons I did what you�re planning on doing.

1) Because I wanted a 20� lathe so I need more horsepower, for the larger work.

2) I need a slower lathe for the larger diameter work. That�s where the VFD came in (75-3500 RPM now)

3) I wanted forward and reverse for sanding. Love this.

I plan on replacing my sheave drive with a step pulley setup.

If you have any questions just ask.

Best Regards,

Ben