Tru-maxx 66253255686 Surface Grinding Wheel 80 Grit

Product Description

The TRU-MAXX 66253255686 is a Type 1 surface grinding wheel built for precision flat-surface stock removal on surface grinders. It measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. The wheel uses an aluminum oxide abrasive grain in a vitrified bond matrix, rated at J hardness and a grain structure of 6, placing it in the medium grade category. At 80 grit, it balances material removal rate with surface finish quality. Maximum operating speed is 3,600 RPM. Specification code 29A80J6V31 identifies the exact wheel composition for procurement and replacement. This wheel is installed by machinists, tool and die makers, and grinding technicians.

This wheel suits horizontal and reciprocating surface grinders commonly found in machine shops, maintenance facilities, and production environments. The aluminum oxide abrasive is appropriate for ferrous metals including steel and cast iron. The vitrified bond provides rigidity and free-cutting action, making it well suited for precision flat grinding where dimensional accuracy and consistent surface finish are required. The non-porous, semi-friable grain structure supports controlled wear and self-sharpening behavior during use.

Key Features

• Type 1 straight wheel profile for surface grinding applications
• 80 grit aluminum oxide abrasive for balanced stock removal and finish
• Vitrified bond with J hardness and grain structure 6 for rigid, free-cutting action
• Semi-friable grain promotes self-sharpening and consistent performance
• Non-porous construction for uniform density across the wheel face
• 3,600 RPM maximum operating speed

Compatibility

Designed as a direct-fit replacement surface grinding wheel for Type 1 straight-wheel surface grinders accepting a 1-1/4 inch arbor bore and wheels up to 7 inches in diameter.

Installation Notes

Installation and dressing should be performed by a qualified machinist or grinding technician following ANSI B11.24 and OSHA 1910.215 grinding safety standards. Always inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the rated maximum RPM. Power down and lock out the machine before mounting or removing the wheel. Use proper flanges and a blotter on each side of the wheel when securing it to the spindle.