Norton 66253246803 Surface Grinding Wheel 46 Grit 14 in

Product Description

The NORTON 66253246803 is a Type 1 vitrified aluminum oxide surface grinding wheel rated for coarse stock removal across a broad range of ferrous and non-ferrous materials. At 14 inches in diameter and 1-1/2 inches thick, it carries a 5-inch arbor hole and spins up to 2320 RPM. Hardness code I places it in the medium range, giving it enough bond retention to hold grain under aggressive cuts while still allowing controlled breakdown as the wheel wears. The 32A Series designation identifies this as a production-grade wheel built for consistent, repeatable performance on industrial grinding equipment.

This wheel is suited for use on CNC cutting tool machines, cylindrical grinders, and surface grinders in both production shops and maintenance environments. Material applications include 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The coarse 46-grit specification targets high material removal rates rather than finish grinding. It is typically installed and dressed by machinists or tool-and-die professionals working with horizontal-spindle surface grinders handling large workpieces.

Key Features

• Aluminum oxide abrasive, Series 32A vitrified bond for stable, controlled breakdown
• 46 grit coarse grade optimized for high material removal rate
• Medium hardness (code I) balances grain retention with self-dressing action
• Rated to 2320 RPM maximum operating speed
• Non-porous, non-tapered Type 1 straight-wheel profile with no recess
• Compatible material range covers stainless, carbon steels, tool steels, aluminum, and cast iron grades

Compatibility

Designed for use with CNC cutting tool machines, cylindrical grinders, and surface grinders. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Installation should be performed by a qualified machinist or grinding equipment operator. Before mounting, power down and lockout the grinder per OSHA lockout/tagout procedures and inspect the wheel for cracks or chips using the ring test. The wheel must be mounted with proper flanges and blotters per ANSI B7.1 standards and must never be operated above its rated maximum RPM. Dress the wheel before initial use to true the face and expose fresh abrasive grain.