FLANGED LH STANDARD TAPER ADAPTER 4.5-1-2

3.000 in. Taper Per Foot with 1.00 in. Diameter at the Large End of taper. For 2.000 in. and 3.000 in. ID standard width wheels. Now you can extend the useful working life of 2.000 in. and 3.000 in. I.D. grinding wheels. There is no need to waste money by throwing worn wheels away. Extend wheel life, use SOPKO 4-1/2 in. flanged diameter wheel adapters! Machined from forged alloy steel, the one piece hub design distributes mounting pressure away from the bore, the weakest part of the grinding wheel. The inherent rigidity of one piece design, and the precision ground flanges provide identical radial load bearing surfaces for positive wheel lock and better spindle driving torque to the abrasive wheel. All surfaces are ground concentric and square for optimum surface finishes. Completely heat treated, SOPKO flanged adapters are safe to use and maintain their rigidity. - ONE PIECE HUB design for rigidity. - PRECISION INTERNAL TAPER for proper spindle mating. - Completely HEAT TREATED for strength and years of use. - Precision GROUND FLANGE SURFACES for better surface finishes. -Concentric and square GROUND SURFACES for better surface finishes. -All external threads are THREAD GROUND for concentricity and squareness. *OSHA 1910.215(c) requires that no less than 33% of the grinding wheel needs to be covered by the flange.