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Bonded Abrasives

Wheel Selection Guide

Grain

LetterGrainPurpose
AAluminum OxideFor general purpose use on all metals except titanium
CSilicon CarbideFor use on non-metallics and titanium

Grit

Grit NumberTexturePurpose
24CoarseFor fast cutting and maximum wheel life
30Medium/CoarseFor fast cutting and long wheel life
36Medium/CoarseExcellent for general purpose cutting
46Fine/MediumFor a smoother finish and reduced burr
60FineFor a burr-free cut
80FineFor a burr-free cut

Grade

GradeToughnessPurpose
T-VHardFor maximum wheel life
R/SMedium/HardFor improved stock removal
E-NSoftFor maximum cut rate

Soft vs. Hard Wheels

Soft Wheels
  • Shorter wheel life
  • High stock removal
  • Faster cut
  • Large contact areas
  • Less bond holding the grain together
Hard Wheels
  • Longer wheel life
  • Lower stock removal
  • Slower cut
  • Finer finishes
  • More bond holding the grain together

Wheel Thickness

Cut Off Wheels
  • 1/32” = 0.031”
  • 1/25” = 0.040”
  • 1/16” = 0.063”
  • 5/64” = 0.078”
  • 3/32” = 0.094”
  • 1/8” = 0.125”
  • 9/64” = 0.141”
Grinding Discs
  • 5/32” = 0.156”
  • 1/4” = 0.250”
  • 5/16” = 0.312”
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