Tru-maxx 66253255504 Surface Grinding Wheel 7in 60 Grit

Product Description

The TRU-MAXX 66253255504 is a Type 1 straight surface grinding wheel designed for precision stock removal and surface finishing on ferrous metals. Built with white aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent, controlled cutting action suited to surface grinders in machine shops and metalworking facilities. At 60 grit with a K hardness rating and medium grade designation, it sits in the range used for general-purpose ferrous grinding where moderate material removal and a reasonably smooth finish are both required. The wheel weighs 2 pounds and spins at a maximum rated speed of 3600 RPM.

This wheel is intended for use on horizontal-spindle surface grinders in industrial and production shop environments. It is a standard fitment for tool rooms, maintenance shops, and manufacturing operations performing flat grinding on steel and iron workpieces. The 7-inch diameter, 1/2-inch thickness, and 1-1/4-inch arbor hole are common dimensions for bench-top and mid-size surface grinder spindles. Machinists, tool grinders, and maintenance technicians are the primary installers and users of this wheel type.

Key Features

• White aluminum oxide abrasive — semi-friable grain structure for self-sharpening cutting action on ferrous metals
• Vitrified bond provides rigidity and porosity control for consistent wheel performance
• 60 grit, K hardness, medium grade — suited for general-purpose surface grinding with balanced stock removal and finish
• Type 1 straight wheel profile with no recess and no taper — direct mount to standard arbor flanges
• 3600 RPM maximum operating speed — verify spindle speed before mounting
• Non-porous construction with grain structure designation 6

Compatibility

Designed as an OEM-style replacement or direct fitment for horizontal-spindle surface grinders accepting a 7-inch diameter, 1/2-inch wide, Type 1 straight wheel with a 1-1/4-inch arbor hole.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machinist or trained shop technician in accordance with ANSI B11.9 and applicable OSHA abrasive wheel standards. Before mounting, inspect the wheel for cracks using the ring test — do not mount a wheel that sounds dull or cracked. Ensure the spindle speed of the surface grinder does not exceed the 3600 RPM maximum rating marked on the wheel. Always dress the wheel after mounting and before the first cut to true the running surface.