Norton 66252940195 Surface Grinding Wheel 7in 46 Grit

Product Description

The NORTON 66252940195 is a Type 1 surface grinding wheel engineered for aggressive stock removal on hard ferrous metals and exotic alloys. Built on a ceramic abrasive grain with a vitrified bond, this wheel runs at a maximum of 3600 RPM and carries a coarse 46 grit rating with a K hardness code, placing it in the medium hardness range. The semi-friable ceramic grain continuously fractures to expose fresh cutting edges, reducing heat buildup and maintaining consistent cut rates across the workpiece. At 7 inches in diameter and 0.5 inches thick with a 1.25-inch arbor hole, the wheel fits standard surface grinder spindle configurations. Licensed HVAC technicians, machinists, and tool-and-die professionals are the primary users of this product.

This wheel is suited for precision surface grinding applications in both production and job-shop environments. It is designed for use on CNC cutting tool machines, cylindrical grinders, and surface grinders. Compatible material applications include 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The blue wheel color is characteristic of the 5SG series ceramic grain line, and the no-recess, no-taper Type 1 flat profile makes it straightforward to mount on standard wheel flanges.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent cut rate and long wheel life
• Semi-friable grain structure continuously self-sharpens under grinding pressure
• 46 grit coarse grade suited for high stock-removal passes
• K hardness (medium) balances wheel wear against workpiece hardness
• Type 1 flat profile with no recess and no taper for straightforward mounting
• Rated for multiple hard-to-grind materials including titanium, tool steels, and super alloys

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Confirmed material applications include 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Series designation is 5SG Type 1 with specification code 5SG46-KVS.

Installation Notes

Wheel mounting and dressing should be performed by a qualified machinist or grinding technician following ANSI B11.9 and OSHA 1910.215 standards for abrasive wheel machinery. Always inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the rated maximum of 3600 RPM. Power down and lock out the grinder before changing wheels. Ensure flanges are clean, properly sized, and that blotters are used between the flange and wheel face per ANSI specifications.