motor pully size

[powerpuff]

I have had a Craftsman belt disc sander tucked away for many years waiting to find the correct era motor for it. after searching and searching i have recently kinda given up and have purchased a old delta motor at the local Re store this morning that will work fine. what i need to know is what size pulley is on the motor? i searched but not much luck so far.

thanks

 

[u3b3rg33k]

 

[Walkers]

Need to know what your final rpm is, input rpm, and the sander pulley size to calculate motor pulley size.

 

[bubinga]

He don't have an old Pulley to measure.

I usually ran the same size pulley that's at the sander on my motor assuming it's a 1725 RPM motor you have?
Or you could kick it up a little bit maybe about a quarter inch bigger pulley then is on the sander.

 

[u3b3rg33k]

He don't have an old Pulley to measure.

I usually ran the same size pulley that's at the sander on my motor assuming it's a 1725 RPM motor you have?
Or you could kick it up a little bit maybe about a quarter inch bigger pulley then is on the sander.

no but there's infinitely more data to be provided than has been so far.

 

[bubinga]

no but there's infinitely more data to be provided than has been so far.

Yes well if he knows what kind of speed he wants.
That's just usually where the ones I had were set up from the factory roughly 1 to 1.
And how I usually set mine up.

 

[powerpuff]

I found this sander at a garage sale for free . the old man who gave it to me said that it needed upper bearings in the upper roller and he could not find them. i went on the Sears parts web site and ordered a set and installed them. at the same sale he offered me the motor for $1.50.... and of course being stupid i left without it so i do not have a pulley but after more research it looks like motor pulley depending on what i am doing can match the motor pulley and work just fine for wood working. 1750 motor is what i have.

thanks

 

[bubinga]

it looks like motor pulley depending on what i am doing can match the motor pulley and work just fine for wood working. 1750 motor is what i have.

You mean the motor pulley size can match the sander spindle pulley size?
Any problems installing the bearings?

 

[powerpuff]

yes. the bearings went in very easily. after i drug this machine home i went down the street to the Bearing Inc store and the guy at the counter measured them and the size of the bearings for the roller did not exist... so i went to sears.com and bought them there. most likely not a option any more.

 

[larry_g]

I would suggest that you research belt sander belt speed. You will find that belt speed is in the 3000 ft/min. With that information you work backwards using the diameters of the belt drum and pulleys. There are calculators online to use.

lg
no neat sig line

 

[2oolhound]

If you post pictures you may find someone here has the same machine.

 

[Indexmill]

OP, you are overthinking it. Find or buy a small pulley, put it on the motor, buy a belt and use the sander.