HOW TO READ A GRINDING WHEEL SPEC
What does the rest of the description mean after the size? T-1 means the grinding wheel is flat. This is also referred to as a Type 1 Grinding Wheel or a straight toolroom wheel; Vitrified is the bonding of grinding wheel; A36 - A means it is an aluminum oxide grinding wheel and the 36 means the grinding wheel is composed of a medium grain size also known as grit. See the grain size chart below. A/O also means aluminum oxide; RPM is the Revolutions Per Minute or Maximum Operating Speed - not all specifications will show this. The tool, the grinding wheel and application must be in agreement to ensure safe operation. Grinding Wheel Specification Sheet Grain Size/Grit: Coarse: 8, 10, 12, 14, 18, 20, 24 Medium: 30, 36, 46, 54, 60 Fine: 80, 100, 120, 150, 180 Grade: Soft: B, D, E, F, G, H Med: I, J, K, L, M, N Hard: O, P, Q, R, S, T Bond: V- Vitrified B- Resin B2: Resin Bon...
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