Tru-maxx 66253255585 Surface Grinding Wheel 46 Grit

Product Description

The TRU-MAXX 66253255585 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and good form-holding under production grinding conditions. It carries a J hardness rating (medium) with a 46 grit coarse grade and a semi-friable grain structure, making it well-suited to applications that require aggressive material removal while still controlling heat buildup. The 7 inch diameter and 1/2 inch thickness are standard dimensions for surface grinders found in job shops and maintenance facilities. Installation and operation require a compatible 1-1/4 inch arbor bore and a spindle rated for at least 3600 RPM. The part specification code is 29A46J12V31.

This wheel is used on horizontal and vertical spindle surface grinders in both job-shop and production environments. The coarse 46 grit makes it appropriate for initial stock removal passes on steel, cast iron, and similar ferrous workpieces. The porous vitrified bond structure promotes chip clearance and coolant flow during wet grinding operations. Maintenance machinists, tool grinders, and production grinding technicians are the primary installers and operators. This wheel is not recommended for hand-held angle grinders or applications where the spindle speed exceeds the rated maximum.

Key Features

• Type 1 straight wheel profile with no recess for straightforward mounting on surface grinder arbors
• 46 grit aluminum oxide abrasive provides coarse, aggressive stock removal on ferrous metals
• J hardness (medium) rating balances wheel life against heat generation on moderate-hardness workpieces
• Vitrified bond with porous, semi-friable grain structure supports coolant penetration and consistent breakdown
• Maximum operating speed of 3600 RPM — do not exceed this rating
• Pink wheel color indicates a standard aluminum oxide abrasive formulation common in surface grinding

Compatibility

Designed as an OEM-style replacement or direct-purchase grinding wheel for surface grinders equipped with a 1-1/4 inch arbor bore accepting a 7 inch diameter Type 1 straight wheel.

Installation Notes

Surface grinding wheels must be installed by a qualified machine operator or machinist following the grinder manufacturer's wheel-mounting procedures and applicable ANSI B11.22 safety standards. Before mounting, perform a ring test to check the wheel for cracks. Power down and lock out the grinder before changing wheels. Never exceed the maximum rated speed of 3600 RPM printed on the wheel blotter, and always use the correct flanges and arbor hardware specified for the machine.