Tru-maxx 66253255814 Surface Grinding Wheel 80 Grit

Product Description

The TRU-MAXX 66253255814 is a Type 1 surface grinding wheel designed for precision material removal on surface grinders. It measures 8 inches in diameter and 1/4 inch thick with a 1-1/4 inch arbor hole. The wheel is made from white aluminum oxide abrasive with a vitrified bond and carries an I hardness code, placing it in the soft-to-medium hardness range. Rated to 3600 RPM maximum, it is suited for controlled stock removal on ferrous metals and tool steel. Machinists, tool grinders, and surface grinding operators are the primary users of this wheel type.

This wheel fits standard surface grinders that accept 8-inch diameter Type 1 straight wheels with a 1-1/4 inch arbor bore. The 80 grit designation and grain structure 6 make it appropriate for intermediate material removal where a balance of cut rate and surface finish is needed. The semi-friable aluminum oxide grain self-sharpens during use, making it a common choice for surface grinding of hardened tool steel, high-speed steel, and similar ferrous materials in both job shop and production environments.

Key Features

• Type 1 straight wheel profile with no recess for standard surface grinder spindles
• White aluminum oxide abrasive grain — semi-friable for self-sharpening performance on ferrous metals
• Vitrified bond provides rigid structure and consistent wheel form retention
• 80 grit with grain structure 6 balances stock removal rate with surface finish quality
• I hardness code (soft range) reduces heat buildup on heat-sensitive workpieces
• Non-porous construction rated to 3600 RPM maximum operating speed

Compatibility

Designed as a direct-fit replacement for surface grinders accepting 8-inch diameter Type 1 straight wheels with a 1-1/4 inch arbor hole and a maximum spindle speed of 3600 RPM or lower.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machine operator or toolroom technician following ANSI B7.1 safety standards. Always power down and lock out the grinder before changing wheels. Inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the maximum RPM marked on the wheel. Dress the wheel with an appropriate diamond dresser after mounting to true the face before grinding operations begin.