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Cincinnati Milacron cup wheel. 3-1/2 dia. 1-3/8 depth 1-/14 hole3M / SB801 — Manufacturer / abrasive blend. Cincinnati used a lot of aluminum-oxide blends. The bluish color is typical of a seeded-gel / ceramic alumina finish-grinding wheel.
• K- Grade, how hard the bond holds the grit. K is on the softer side of medium — K grade will cut cooler and faster, often used for harder tool steels and for fine finishing. a
• 6 - Structure / spacing. 6 is medium-dense with some porosity for coolant and chip clearance.
• VSA - Bond type. V = Vitrified (glass/ceramic fired bond), SA = special / proprietary additive e
• 11Y-120 — Might be shape / finish
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