Sunnen WY51-A45 Keyway Stone Set 4.5-60 Assembly

Sunnen WY51-A45 Keyway Stone Set is a vitrified-bond, aluminum oxide honing stone set engineered for holes that include a keyway. Identified in Sunnen catalogs as WY51A45 (SKU WY51A45), this 4.5-60 inch keyway set covers bore diameters from 114 mm to 1524 mm, placing it in Sunnen's large-diameter keyway stone category. Designed for use with Sunnen honing equipment, including portable honing tools, the WY51-A45 delivers consistent stock removal and stable finishes on keyway holes thanks to the hard, uniform abrasive surface of aluminum oxide embedded in a vitrified bond. The vitrified bond provides rigidity and heat resistance, helping maintain precise keyway geometry across the full size range while offering long tool life in demanding production environments. This model is part of Sunnen's keyway stone line, a family of sets tailored to holes that require both a finished bore and an accompanying keyway, making it suitable for applications where accurate keyways are critical for torque transmission and proper alignment in industrial components.