Tru-maxx 66243496740 Surface Grinding Wheel 46 Grit

Product Description

The TRU-MAXX 66243496740 is a Type 1 surface grinding wheel designed for precision stock removal on surface grinders in industrial and machine shop environments. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cutting action and good form-holding across a range of ferrous materials. The wheel measures 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole. At 46 grit and K hardness, it falls in the coarse-grade, medium-hardness range suited for aggressive material removal while maintaining dimensional control. Rated at a maximum of 2069 RPM, it is engineered for fixed-speed horizontal or vertical spindle surface grinders.

This wheel is a standard fit for surface grinding operations on steel, tool steel, and similar ferrous workpieces in production and tool-room settings. The 12-inch diameter and 3-inch hole size are common specifications for larger surface grinder tables found in job shops and manufacturing facilities. The 46-grit aluminum oxide construction makes it appropriate for roughing passes and initial stock removal where a finer finish is not the primary objective. Machinists and grinding machine operators are the primary end users for this wheel.

Key Features

• Type 1 flat wheel profile with no recess for straightforward surface grinding applications
• Aluminum oxide abrasive in a vitrified bond for rigid, consistent cutting performance
• 46 grit coarse grade removes material efficiently on ferrous metals
• K hardness (medium) balances wheel wear rate with cutting aggression
• Semi-friable grain structure at grain structure grade 5 promotes controlled self-sharpening
• Non-porous construction per specification 29A46K5V31

Compatibility

Designed as an OEM-style replacement or standard consumable for surface grinders accepting a Type 1 wheel with a 12-inch diameter, 1-inch face width, and 3-inch arbor hole running at or below 2069 RPM.

Installation Notes

Surface grinding wheels must be installed by a qualified machinist or grinding machine operator following ANSI B11.23 and the machine manufacturer's guidelines. Before mounting, inspect the wheel for cracks using the ring test and verify the machine spindle speed does not exceed the wheel maximum RPM of 2069. Always use proper flanges and blotters, and never exceed rated speed. Power down and lock out the machine before changing wheels in accordance with applicable OSHA lockout/tagout procedures.