Norton 66243529171 Internal Grinding Wheel 80 Grit

Product Description

The NORTON 66243529171 is a Type 1 internal grinding wheel designed for precision bore and internal diameter grinding operations. Built with silicon carbide abrasive and a vitrified bond, this wheel delivers consistent stock removal on hard, brittle materials such as cast iron, ceramics, and carbide tooling. It measures 3 inches in diameter with a 1-inch face thickness and a 1/2-inch arbor hole, making it suited for internal grinding spindles in production and tool room environments. The medium grade and M hardness rating provide a balance between wheel life and surface finish. Licensed grinding machine operators and tool room machinists are the primary installers and users of this wheel.

This wheel is used in internal grinding applications on surface grinders, cylindrical grinders, and dedicated ID grinding machines. It is well matched for finishing bores, holes, and internal profiles in hard or abrasive workpiece materials where aluminum oxide abrasive would wear too quickly. The no-recess design and vitrified bond suit wet or dry grinding in both job shop and light production settings. Maximum operating speed is rated at 10,825 RPM, which must be observed at all times.

Key Features

• Silicon carbide abrasive for effective grinding of hard, brittle, and non-ferrous materials
• Vitrified bond provides a rigid, porous structure for consistent cut rate and wheel form retention
• Medium grade and M hardness rating for balanced stock removal and wheel life
• Type 1 straight wheel profile with no recess for straightforward mounting
• Rated to 10,825 RPM maximum operating speed
• Black wheel color consistent with silicon carbide abrasive construction

Compatibility

Designed as a direct-fit Type 1 internal grinding wheel for internal grinding spindles accepting a 1/2-inch arbor hole and wheels up to 3 inches in diameter and 1 inch thick.

Installation Notes

Internal grinding wheels must be mounted, dressed, and operated by qualified personnel following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or chips before mounting and perform a ring test prior to use. Never exceed the 10,825 RPM rated speed marked on the wheel or its packaging. Power down and lock out the grinding machine before changing or dressing the wheel.