Tru-maxx 66253255876 Surface Grinding Wheel 7in 100 Grit

Product Description

The TRU-MAXX 66253255876 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 thermal stability across extended grinding operations. At 100 grit with a K hardness rating, it sits in the fine-grade range, making it well suited for finish grinding passes where surface finish quality matters. The non-porous, semi-friable grain structure with a grain structure rating of 6 helps the wheel self-dress during use, reducing loading on softer workpiece materials. Licensed HVAC, mechanical, and tool-room professionals will recognize the vitrified bond as a reliable choice for wet or dry precision surface work.

This wheel is intended for use on surface grinders in tool rooms, maintenance shops, and production grinding environments. The Type 1 flat wheel geometry fits standard surface grinder spindle arbors. At 7 inches in diameter and 1/4 inch thick with a 1-1/4 inch arbor hole, it mounts directly to machines configured for that bore size. The 3600 RPM maximum speed rating must be observed to ensure safe operation. Typical applications include flat surface finishing, tool reconditioning, and light material removal on hardened steel and similar ferrous workpieces.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut and long wheel life
• 100 grit fine grade for finish grinding and tight surface finish tolerances
• K hardness (medium) holds abrasive grain firmly while allowing controlled breakdown
• Semi-friable grain structure (grade 6) promotes self-dressing and reduces loading
• Non-porous wheel body rated to 3600 RPM maximum operating speed
• Type 1 flat profile with no recess fits standard surface grinder arbors

Compatibility

Designed as an OEM-style replacement or standard fitment for surface grinders accepting a Type 1 flat wheel with a 1-1/4 inch arbor hole and a maximum operating speed of 3600 RPM or higher.

Installation Notes

Wheel mounting must be performed by a qualified operator following ANSI B7.1 safe use standards for abrasive wheels. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and lock out the grinder before changing wheels. Never exceed the 3600 RPM maximum speed stamped on the wheel, and always use the correct flanges and blotters supplied or specified for the machine.