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What is a Norpor wheel?

richard newman

Titanium
Joined
Jul 28, 2006
Location
rochester, ny
Just came across a Norton Norpor high porosity wheel: 38A46-GVP2. How is this different from a regular 38A wheel, and what is it used for?
 
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eKretz

Diamond; Mod Squad
Joined
Mar 27, 2005
Location
Northwest Indiana, USA
Never heard of it, but first guess would be probably similar to a Por-Os-Way wheel. That would be an induced porosity wheel, or lower density wheel. More airspace between the grit and binder, cuts cooler, harder to load up.
 

jwmelvin

Aluminum
Joined
Sep 5, 2018
Location
northern Virginia
We use induced porosity wheels for grinding rubber rolls-wheels.
Thanks for that tip. I’ve long wondered about the approach to grinding rubber.

I just got a Norton 32A46HVBEP porous wheel for grinding my chuck. Not branded as Norpor. OP’s wheel appears to be pretty similar.
 








 
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