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Magna-Matic Lawn Mower Blade Balancers, Sharpeners, and more

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  #11  
Old 05-16-2003, 01:31 PM
dobehap dobehap is offline
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Join Date: May 2003
Location: Charlotte NC
Posts: 292
Quote:
Originally posted by Magna-Matic

I would be wary of the 10" grinding wheel on a over 3000 RPM machine, i do not believe you can get a speed tested wheel in that size. I will do some more research to see, what i can find.

Did a quick search and found an 8" wheel, speed rated at 3450 max RPM
http://www.thetoolwarehouse.net/shop/SHA-2032.html

Also they rate their wheels at 36 Grit,

What grit are your wheels and can they be used on a traditional grinder?

thanks.
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  #12  
Old 05-16-2003, 02:44 PM
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Magna-Matic Magna-Matic is offline
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Join Date: Jul 2001
Location: Waldo, Wisconsin
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Hello,

A 36 grit wheel is more coarse, and will take a bigger bite out of the mower blade leaving a rougher cut - and will break apart a bit faster because of it being more coarse.

We use 46 grit "I" hardness - dimensions 7 x 1 x 1-1/4"

Our wheels, and this type of wheel will not fit in a normal grinder because of the arbor hole size - they are made for SURFACE GRINDERS --- NOT --- bench grinders.

The grinding wheel alone is not the only factor that allows our sharpeners to sharpen so quickly.

See this info
http://www.magna-matic.com/sharpener...ifference.html

Thank you,
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Magna-Matic Corporation
Waldo WI USA
800-328-1110 (toll free USA & Canda)
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  #13  
Old 05-16-2003, 08:10 PM
blairbuc blairbuc is offline
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Join Date: May 2002
Location: CT
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another point for Dobehap to consider is that Magna-Matics wheel being softer sheads the heat from the blade. The other wheel rated fot for the high RPM may or may not have this quality.
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  #14  
Old 03-25-2011, 12:15 PM
parkman parkman is offline
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Join Date: Mar 2011
Location: South Bend In
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Blade grinders

I used a magna-matic 8000 for a few weeks and it doesn't even compare to the old fireball 300-C I have been useing at work for 10yrs.
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