Norton 66252942828 Surface Grinding Wheel 46 Grit Type 5

Product Description

The NORTON 66252942828 is a Type 5 recessed surface grinding wheel engineered for use on surface grinders and cylindrical grinders in demanding metalworking environments. The wheel measures 7 inches in diameter and 1 inch thick with a 1-1/4 inch arbor hole, a one-side recess measuring 2.75 inches in diameter and 0.5 inches deep. Aluminum oxide abrasive is bonded in a vitrified matrix rated at 3600 RPM maximum. The 46-grit, H-hardness (coarse grade) specification — designated 32A46-HVBEP — suits aggressive stock removal on ferrous and non-ferrous metals. Installers and tool room operators specify this wheel when cycle time and cut rate matter more than ultra-fine finish.

This wheel is suited for production and maintenance grinding applications in both shop and industrial settings. Material applications include 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. It is designed for use on surface grinders and cylindrical grinders. The porous vitrified bond promotes coolant retention and chip clearance, reducing heat buildup during extended grinding passes on tough alloys and hardened steels.

Key Features

• Type 5 recessed profile with one-side recess — 2.75 inches diameter, 0.5 inches deep — for clearance on recessed-hub flanges
• Aluminum oxide abrasive grain (32A series) provides consistent cut rate on ferrous metals
• Vitrified bond with porous structure promotes coolant flow and reduces glazing
• 46 grit, H hardness (coarse grade) optimized for aggressive stock removal
• 3600 RPM maximum operating speed rated for standard surface and cylindrical grinder spindles
• Gray wheel color for quick visual identification of aluminum oxide vitrified type

Compatibility

Designed for use with surface grinders and cylindrical grinders. Verified material applications include 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 machine operator or toolroom technician following ANSI B7.1 safe-use standards for abrasive wheels. Power down and lock out the grinder before mounting — never exceed the 3600 RPM maximum speed marked on the wheel. Inspect the wheel for cracks or chips before mounting and perform a ring test; do not mount a wheel that fails inspection. Use proper flanges and blotters; never force the wheel onto the arbor.