Tru-maxx 66253255418 Surface Grinding Wheel 7in 60 Grit

Product Description

The TRU-MAXX 66253255418 is a Type 1 surface grinding wheel designed for precision flat grinding on surface grinders in machine shops and metalworking facilities. It is made from aluminum oxide abrasive with a vitrified bond, measures 7 inches in diameter, 3/4 inches thick, and has a 1-1/4 inch arbor hole. The wheel carries a 60-grit rating with K hardness (medium grade) and a grain structure of 6, making it well suited for moderate stock removal on ferrous metals. Maximum operating speed is 3,600 RPM. The white wheel color is consistent with standard aluminum oxide formulations used in surface grinding applications.

This grinding wheel is intended for horizontal spindle surface grinders commonly found in production machining, tool and die, and maintenance shops. The vitrified bond provides rigidity and free-cutting action appropriate for finish and semi-finish grinding passes on steel and similar ferrous workpieces. The Type 1 straight-wheel profile fits standard surface grinder spindle setups. It is installed and dressed by machinists and grinding machine operators following machine manufacturer guidelines.

Key Features

• Type 1 straight-wheel profile for horizontal spindle surface grinders
• Aluminum oxide abrasive with vitrified bond for free-cutting, rigid grinding action
• 60 grit, K hardness (medium grade) for balanced stock removal and surface finish
• Semi-friable grain structure rated 6 for consistent wheel breakdown and sharp cutting edges
• Non-porous, no-recess design rated to 3,600 RPM maximum
• White wheel color indicating standard aluminum oxide abrasive composition

Compatibility

Designed as an OEM-style replacement or standard consumable for horizontal spindle surface grinders accepting a Type 1 straight wheel with a 7-inch diameter, 3/4-inch thickness, and 1-1/4 inch arbor hole.

Installation Notes

Surface grinding wheels must be installed by qualified machinists following ANSI B7.1 safe-use requirements for abrasive wheels. Always ring-test the wheel before mounting and inspect for cracks or chips. Power down and lock out the surface grinder before changing wheels, and ensure the spindle speed does not exceed the 3,600 RPM maximum rating stamped on the wheel. Use correct flange sizes and never force the wheel onto the spindle arbor.