Norton 66252941174 Surface Grinding Wheel 120 Grit

Product Description

The NORTON 66252941174 is a Type 1 straight surface grinding wheel designed for precision stock removal and finish grinding on metalworking equipment. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent, controlled cutting action at a fine 120 grit. It measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole, and is rated for a maximum of 3600 RPM. The semi-friable aluminum oxide grain and medium-range J hardness code make it well suited for applications that demand a balance between wheel life and surface finish quality. Licensed tradespeople in tool and die, machining, and industrial maintenance typically specify and install this wheel.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both production and maintenance shop environments. Its material application range covers soft carbon steels, tool steels, and super alloys, making it a versatile choice across general metalworking and precision grinding operations. The non-porous, non-tapered, no-recess Type 1 profile fits standard straight-wheel mounting configurations common in most horizontal and vertical spindle surface grinder setups.

Key Features

• 120 grit fine grade aluminum oxide abrasive for controlled material removal and refined surface finish
• Vitrified bond construction provides rigidity and consistent wheel form retention during grinding
• J hardness (medium) rating balances wheel wear against cutting efficiency on steels and super alloys
• Semi-friable grain structure promotes self-sharpening action to reduce glazing during use
• Rated to 3600 RPM maximum operating speed for safe use on standard bench and surface grinding equipment
• Type 1 straight profile with no recess and no taper for direct spindle arbor mounting

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and super alloys. Fits standard 1-1/4 inch arbor spindles on Type 1 straight-wheel applications.

Installation Notes

Installation should be performed by a qualified machinist or grinding equipment operator following the machine manufacturer's mounting instructions and applicable ANSI B11 grinding safety standards. Always power down and de-energize the grinder, confirm the machine spindle speed does not exceed the wheel's 3600 RPM maximum rating, and inspect the wheel for cracks or chips before mounting. Use proper flanges and blotters as required, and perform a ring test before installing. Never exceed the rated maximum RPM under any operating condition.