Tru-maxx 66253269748 Type 5 Surface Grinding Wheel 46 Grit

Product Description

The TRU-MAXX 66253269748 is a Type 5 recessed surface grinding wheel designed for precision surface grinding applications on ferrous metals and similar materials. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal and a coarse finish pass across flat workpiece surfaces. The wheel measures 7 inches in diameter and 1 inch thick, with a 1-1/4 inch arbor hole for secure spindle mounting. Rated at a maximum of 3,600 RPM, it carries an I hardness code and a semi-friable grain structure, making it well-suited for controlled material removal where wheel breakdown and self-sharpening action are needed. Machinists and tool-room operators will find this wheel straightforward to dress and true on compatible surface grinders.

This wheel is intended for use on horizontal-spindle surface grinders that accept Type 5 recessed wheels. The single-side recess measures 3 inches in diameter, which reduces wheel weight and clears spindle flanges on compatible machines. The coarse 46-grit specification targets roughing passes and rapid stock removal rather than finish grinding. It is a standard fit for job shops, maintenance facilities, and production environments where a reliable aluminum oxide surface grinding wheel is needed for everyday ferrous metal work.

Key Features

• Type 5 single-side recessed wheel — 3-inch recess diameter clears spindle hardware on compatible grinders
• Aluminum oxide abrasive with vitrified bond for consistent, repeatable cut action
• 46 grit coarse grade for aggressive stock removal on ferrous workpieces
• I hardness rating with semi-friable grain structure promotes controlled self-sharpening
• Maximum operating speed of 3,600 RPM — do not exceed this rating
• Non-porous construction maintains wheel integrity under coolant or dry grinding conditions

Compatibility

Designed as an OEM-style replacement or standard consumable for horizontal-spindle surface grinders that accept Type 5 recessed grinding wheels with a 1-1/4 inch arbor hole and a 7-inch diameter.

Installation Notes

Surface grinding wheel installation and dressing should be performed by a qualified machinist or tool-room technician following ANSI B7.1 safe-use guidelines. Before mounting, inspect the wheel for cracks or chips using the ring test — do not mount a damaged wheel. Power down and lock out the grinder before changing wheels, and ensure the new wheel is properly flanged and torqued per the machine manufacturer's specifications. Always perform a one-minute free-spin guard test at full RPM before bringing the wheel into contact with a workpiece.