Tru-maxx 66253269661 Surface Grinding Wheel 80 Grit

Product Description

The TRU-MAXX 66253269661 is a Type 1 surface grinding wheel designed for precision flat-stock material removal on surface grinders. It measures 10 inches in diameter, 1/2 inch thick, and accepts a 3-inch arbor hole. The abrasive material is aluminum oxide with a vitrified bond, rated at H hardness (medium grade) and a semi-friable grain structure rated 5. Maximum operating speed is 3,250 RPM. The wheel carries specification code 28A80H5V31 and is non-porous with a white wheel color. Licensed machinists, toolroom operators, and metalworking professionals install and dress these wheels for surface grinding operations.

This wheel is suited for surface grinding ferrous metals including steel and cast iron on reciprocating or rotary surface grinders. The 80-grit aluminum oxide construction makes it appropriate for moderate stock removal with a reasonably fine finish. The vitrified bond provides rigidity and consistent cut rate across extended use cycles. It is typically used in toolrooms, job shops, and production grinding environments where flat, parallel, and square surfaces are required to close tolerances.

Key Features

• Aluminum oxide abrasive grain — suitable for grinding ferrous metals and tool steels
• Vitrified bond construction provides rigidity and stable cut geometry
• 80 grit, H hardness (medium grade) balances stock removal and surface finish
• Semi-friable grain structure (grade 5) supports consistent self-dressing action
• Rated to 3,250 RPM maximum operating speed
• Non-porous, no-recess Type 1 flat wheel — straightforward mounting on standard surface grinder spindles

Compatibility

Designed as a straight Type 1 replacement surface grinding wheel for surface grinders accepting a 10-inch diameter wheel with a 3-inch arbor hole and 1/2-inch face width.

Installation Notes

Installation and wheel changes must be performed by a qualified machinist or toolroom technician. Disconnect and lock out electrical power to the surface grinder before mounting or removing any grinding wheel. Inspect the wheel for cracks or chips before mounting — never install a damaged wheel. Follow ANSI B11.23 and applicable OSHA standards for grinding wheel mounting, ring testing, and guarding requirements. Never exceed the 3,250 RPM maximum rated speed marked on the wheel.