Pool Motors/Hot Tub Motors?

P

PaMtnBkr

Joined
Dec 31, 2009
Messages
393
Kinda curious if a Pool or Hot Tub Motor is suited for a 2x72 grinder? I would ASSUME they are TEFC if they are exposed to weather and water? Just not sure if the shafts are specifically for the filter/impellar? Seems like there are quite a few on CL and Eeee Bay? Just would hate to order one and find out they are so specific to being used on pools that you can't convert one over? Thanks folks!
 
I use a 2hp pool motor that was given to me. I had to cut away the bell housing to fit a pulley over it. I also had to drill into the shaft a bit so the set screw would bite into it from the pulley.

100_3495.jpg
 
I have a couple pool and hot tub motors and all of mine are DP enclosure. Drip Proof is an open case on the bottom, so not a good candidate for a grinder, but maybe a belt driven buffer or something like that.


-Xander
 
jawilder said:
I use a 2hp pool motor that was given to me. I had to cut away the bell housing to fit a pulley over it. I also had to drill into the shaft a bit so the set screw would bite into it from the pulley.

100_3495.jpg
Click to expand...

Love the Orange! Good looking Grinder.
 
I'll be the odd man out, and resident curmudgeon.

Any motor without a totally enclosed case will get metal/grinding dust in it eventually. It will start arcing and the inner parts will wear. The motor shown in the photo was probably free, and it can clearly be seen was modified. The price was right but the lifespan can be hard to guess.

When the motor is free, there is no issue...just replace it when it dies. If you are buying a motor, these open frame ones are cheap, but not the best choice. Whenever possible get a TEFC motor. Pool and pump motors are made for damp locations, but not shielded from dust at all.

It is a small risk, but a fire caused by such a motor used on a grinder is not impossible.
Another small risk is the case becoming electrically charged due to shorting. This could possibly make your grinder frame a shock risk. Not likely, but one more reason for a good ground on all equipment and motors.
 
Thanks for the info Stacy. As you said, I figured I'd use it up until it dies then get a TEFC. I know this isn't ideal and it took some modifications to use, but that was $200 that I didn't have to spend on my grinder build. It will be easier to justify a new motor once this one is dead.
 
Im using a 2.5hp motor out of a tile saw with a 3 step pulley set up, runs like a champ.
 
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