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

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Old 05-16-2003, 01:31 PM
dobehap dobehap is offline
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Join Date: May 2003
Location: Charlotte NC
Posts: 292
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

Also they rate their wheels at 36 Grit,

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

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Old 05-16-2003, 02:44 PM
Magna-Matic's Avatar
Magna-Matic Magna-Matic is offline
Join Date: Jul 2001
Location: Waldo, Wisconsin
Posts: 809

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

Thank you,
Gerd Ferdinand Bauer II

Magna-Matic Corporation
Waldo WI USA
800-328-1110 (toll free USA & Canda)
920-564-2366 (PHONE)
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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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Old 03-25-2011, 12:15 PM
parkman parkman is offline
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Join Date: Mar 2011
Location: South Bend In
Posts: 9
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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