Tru-maxx 66253291550 A31 Mounted Point 60 Grit Aluminum Oxide

Product Description

The TRU-MAXX 66253291550 is an aluminum oxide mounted point designed for precision grinding, deburring, and surface finishing on metal workpieces. Shaped as an A31 inverted cone with a cupped end, it delivers controlled material removal in bores, cavities, and contoured surfaces where flat or disc-style wheels cannot reach. The abrasive grain is bonded with a vitrified bond for consistent hardness and open cutting action. At 60 grit and medium grade, this point removes stock efficiently while leaving a surface suitable for further finishing steps. It fits a standard 0.25-inch shank collet and is rated to 27,780 RPM for use with die grinders and rotary tools.

This mounted point is suited for toolroom, maintenance, and production grinding applications. It is used by machinists, tool-and-die workers, and maintenance technicians for internal diameter work, weld cleanup, mold finishing, and edge conditioning on steel, cast iron, and similar ferrous materials. The inverted cone cupped end geometry concentrates abrasive contact at the working face and inner cone surface, making it practical for blending and chamfering operations in tight spaces.

Key Features

• A31 inverted cone cupped end shape for internal and contoured grinding
• Aluminum oxide abrasive with vitrified bond for consistent, open cutting
• 60 grit medium grade balances stock removal with surface finish
• 0.25-inch shank diameter fits standard die grinder and rotary tool collets
• 27,780 RPM maximum speed rating
• Pink aluminum oxide grain for use on hardened and general-purpose steels

Compatibility

Designed as a standard A31-shape mounted point for use in die grinders, flex-shaft machines, and rotary tools accepting a 0.25-inch collet.

Installation Notes

Mounted points are installed and removed by licensed machinists or trained technicians using the appropriate collet wrench for the tool spindle. Always confirm the tool spindle speed does not exceed the 27,780 RPM rating marked on this point before operation. Inspect the vitrified bond for cracks or chips before each use and discard any damaged point immediately. Wear ANSI-rated eye protection and ensure workpiece and tool are secured before contact.