Tru-maxx 66253269920 Surface Grinding Wheel 7in 46 Grit

Product Description

The TRU-MAXX 66253269920 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on ferrous metals and general-purpose shop grinding applications. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rate and form retention across the face. At 46 grit with a J hardness rating, it falls in the coarse-to-medium range, making it well suited for aggressive material removal where surface finish requirements are moderate. The non-porous, vitrified bond structure resists heat and dressing wear, maintaining wheel integrity under sustained grinding pressure. Machinists, tool-and-die technicians, and maintenance grinders are the primary installers and operators of this wheel.

This wheel fits surface grinders and bench grinders accepting a 7 inch diameter, 1/2 inch thick, Type 1 flat wheel with a 1-1/4 inch arbor bore. It is appropriate for horizontal and vertical spindle surface grinders in both job shop and production environments. The coarse 46 grit is typically selected for initial surface cleanup, weld removal, casting cleanup, and rough dimensioning passes where cycle time matters more than final finish. It is not intended for tool sharpening or precision form grinding applications requiring fine grit.

Key Features

• Type 1 flat wheel profile for standard surface and bench grinder spindles
• Aluminum oxide abrasive for effective grinding of steel and ferrous alloys
• Vitrified bond provides rigid structure, good form retention, and easy dressing
• 46 grit coarse grade for high stock removal rates
• J hardness rating balances wheel life with consistent abrasive release
• Non-porous construction reduces loading when grinding softer steels

Compatibility

Designed for surface grinders and bench grinders accepting a Type 1 flat wheel with a 7 inch diameter, 1/2 inch thickness, and 1-1/4 inch arbor hole. Verify spindle speed rating of the machine against the wheel's rated maximum RPM before mounting.

Installation Notes

Wheel mounting and dressing must be performed by a qualified machinist or maintenance technician familiar with ANSI B11.9 grinding machine safety standards. Always shut down and lock out the grinder before removing or mounting a wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the machine's rated spindle RPM. Use proper flanges and blotters as specified by the machine manufacturer.