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Author Topic: What's your opinion of this motor for a home made grinder?  (Read 5517 times)

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kellywyld1

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What's your opinion of this motor for a home made grinder?
« on: July 24, 2016, 09:48:20 AM »
Hey everybody,
   I am going to be building my own grinder/sander/polisher and have already purchased a D14 8" Poly grinder (in excellent condition!) but was wondering if you guys think this motor would be appropriate for the machine:

BALDOR ELECTRIC 1/3 HP General Purpose Motor, Capacitor-Start, 1725 Nameplate RPM, Voltage 115/230, Frame 56
http://www.baldor.com/catalog/L3501M

I am still suuuper new to everything but have been doing a ton of research and basically just tried to look at what motors Diamond Pacific, Barranca Diamond, Cab Kind, etc. are using on their machines.  I also wanted to stick to an American made motor.  Which motor would you use if you built a home made, 2 wheel grinder?   
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jakesrocks

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Re: What's your opinion of this motor for a home made grinder?
« Reply #1 on: July 24, 2016, 10:04:58 AM »
That motor will be ideal for your D14 Poly arbor. You could probably add a jackshaft & run 2 or more DD14 Poly's with it.
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Jhon P

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Re: What's your opinion of this motor for a home made grinder?
« Reply #2 on: July 24, 2016, 04:03:06 PM »
1/3hp should run your grinder fine. I have a 1/3hp on my old Fran Tom and I don't think I can apply enough pressure to slow it down.I picked up a 1/3 hp motor at a garage sale for $20 a couple of weeks ago. set it aside for a replacement or a new project. of course last year I needed a motor and couldn't find a good used one anywhere and had to buy new.
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Slabbercabber

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Re: What's your opinion of this motor for a home made grinder?
« Reply #3 on: July 25, 2016, 05:33:21 AM »
That should be perfect.  You may save some money by going to 3450 rpm and using pulley ratios to get the proper speed.  I always pick up 1/3 and 1/2 hp motors whenever I find them cheap.  $15 or $20 is pretty common at yard sales.  I'm always finding more things I want to build.  Also, over the years I have managed to burn out a few.  Usually due to abuse.  As in trying to make a 1/3 hp motor work where it should be 1/2 or using a split phase instead of capacitor start.
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kellywyld1

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Re: What's your opinion of this motor for a home made grinder?
« Reply #4 on: July 25, 2016, 09:04:40 AM »
Thanks for all of your responses everyone!  I went to a flea market 2 weeks ago and found a 3/4hp Westinghouse motor for $25 and had it in my hands for a little bit then set it back down because I wasn't sure if it would be too much h/p for the grinder.  I suppose I could have used it for a saw...
Yeah I'm definitely stalking ebay right now looking for the Baldor, they're so expensive brand new!
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