Sigma Green Grinding Wheels

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Product Description

Sigma Green Grinding Wheels are aggressive grinding wheels manufactured with a specialty grain and bond combination. Sigma Green is constructed with a layer of coarse grain and a second layer of finer grain, resulting in a better finish compared to standard “fast grinding” wheels.

The specialty bond also results in a better balanced, noticeably quieter, and much smoother running grinding wheel, with less chatter and less vibration.


  • Stainless steel
  • Mild steel
  • Hard face
  • Titanium
  • Alloys
  • Aluminum

Virtually Iron Free

Contains only 0.035% iron, with less than 0.1% of iron, chlorine, and sulfur combined


  • Tank fabrication
  • Power plant maintenance and repair
  • Welding/metal fabrication
  • Shipbuilding
  • Refinery maintenance and repair
  • Grind Stainless Steel, Inconel, and Titanium


  • High performance grain
  • Fast stock removal
  • Superior finish
  • Grinds smooth and quiet
  • Minimizes operator fatigue
  • Controled grinding
  • Cool cutting
  • Won’t discolor or warp stainless

Watch the fast grinding ability of  Sigma Green!

File Downloads

Size DiameterMaximum RPMSpecificationQuantity Per BoxPart No.
4  x 5/81530036GRIT25730001
4  x 3/8-241530036GRIT10730014
4 1/2 x 7/81330036GRIT25730000
4 1/2 x 7/81330046GRIT25730008
4 1/2  x 7/81330060GRIT25730009
4 1/2  x 5/8-111330036GRIT10730002
4 1/2  x 5/8-111330046GRIT10730017
4 1/2  x 5/8-111330060GRIT10730015
5  x 7/81220036GRIT25730005
5  x 5/8-111220036GRIT10730006
7  x 7/8850036GRIT25730003
7  x 5/8-11850036GRIT10730004

Surface Finish Comparison
Measured in micro-inches for a value of RA (roughness average)

Grit SizeRA*Sigma RA**
36185 – 205100
46170 - 19590
60140 – 18080

*Industry data for conventional abrasives on stainless steel
** Rex-Cut RA values are measured with a Mahr Federal Surface analyzer. The values are an average taken from multiple measurements on 304 stainless steel.

Product Demo Video

To see the fast grinding ability of Sigma Green, visit to watch a demo video.

File Downloads