Norton 66253117879 Cutoff Wheel 10 in Aluminum Oxide Type 1

Product Description

The NORTON 66253117879 is an aluminum oxide cutoff wheel designed for high-speed cutting of steel and very hard steels with a Rockwell hardness rating between Rc 55 and Rc 68. Measuring 10 inches in diameter and 0.063 inches thick with a 1-1/4 inch arbor hole, this Type 1 (01/41) flat-profile wheel uses a resinoid bond and a non-reinforced construction. It is rated to a maximum of 3,500 RPM and is intended for use on stationary cutting machines. Tradespeople working in fabrication, maintenance, and metalworking shops install this wheel when precision cutoff work on hardened steel stock is required.

This cutoff wheel is suited for stationary tool applications in industrial and commercial shop environments. Its aluminum oxide abrasive and resinoid bond make it particularly effective on hardened steels, including tool steels and hardened alloy steels in the Rc 55-68 range. The Type 1 flat wheel profile is the standard geometry for straight cutoff operations on chop saws and stationary abrasive cutoff machines. It meets ML-110 specification requirements, making it appropriate for applications where material and performance standards must be documented.

Key Features

• Aluminum oxide abrasive optimized for cutting steel and very hard steels (Rc 55-68)
• Type 1 (01/41) flat wheel profile for straight cutoff operations
• Resinoid bond construction for consistent abrasive release during cutting
• Non-reinforced design rated at 3,500 RPM maximum
• Meets ML-110 specification
• 1-1/4 inch arbor hole fits standard stationary cutoff machine spindles

Compatibility

Designed for use with stationary cutoff tools accepting a 10 inch diameter, Type 1 wheel with a 1-1/4 inch arbor hole running at or below 3,500 RPM. Verify machine spindle speed does not exceed the wheel maximum RPM rating before mounting.

Installation Notes

Installation should be performed by a qualified operator familiar with abrasive wheel safety per ANSI B7.1 standards. Always power down and lock out the machine before mounting or removing a wheel. Inspect the wheel for cracks or damage before installation and perform a ring test on non-reinforced wheels. Never exceed the 3,500 RPM maximum speed rating marked on the wheel or packaging.