Originally Posted by
Copper Head
been checking him out
N[U][B] No Load Speeds: 5,500 RPM
Blade Diameter: 5 in.
Cut Depth: 1-1/32”
more amps more rpm smaller blade compared to sears
Its all about 'meters per minute' & the surface speed of the cutting edge.
Smaller dia needs higher revs to do the same work at the cutting face.
Thats why I remove the cutting disc from my grinder as soon as it will fit into a smaller grinder.
Ie, I wear a 9 inch disc down to 5 inch dia, then I remove it & put a new one on, the worn disc then goes onto my 5 inch grinder.
I try to use the largest dia disc as possible, a 9inch dia disc has 28 inches of face, while a 5 inch has 15.1/2.
Theres still more to it too, angle of approach to the work & actual cutting face coverage, ie smaller angle means the discs grit breaks down as its being used & dosen't come loose from force.
Cutting face coverage,its better to have a 3mm x 20mm face cutting than a 3mm x 3mm cutting face.
Theres a greater impact on the disc with a 3mm x 3mm face & the grit breaks off & then isn't around to do any actual cutting.
They taught me all this in my Apprenticeship......
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