CBN abrasive grains electroplated on quality steel mandrels. Shanks of hardened ground steel for assured concentricity, no truing required. Used for ID, jig or contour grinding. For grinding hardened steels, superalloys and ferrous metals 40 RC or harder. For best results, choose a mandrel sized at 70-80% of your hole diameter. Coolant is optional, but enhances performance; should be oil-based for CBN mandrels. CBN mandrels are identified by a copper dot on the end of the shank.
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