GRIND MID SIZE BALLS TECHNICAL SPECIFICATIONS Hardness (Rockwell C) Ball Diameter (inch) Average Surface Hardness Average Volumetric Hardness (in) (mm) Min Max Min Max 2.0 50 59 65 59 65 2.5 65 59 65 59 65 3.0 80 59 65 59 65 3.5 94 59 65 59 65 4.0 105 59 65 59 65 The above is intended as a guide only. Individual ball hardness readings may fall ...
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