Norton 66261121034 Quick-change Disc 3 in 80 Grit

Product Description

The NORTON 66261121034 is a 3-inch quick-change abrasive disc from the Gemini R766/R228 series, designed for use with Speed-Lok TR (Type III) and Type R attachment systems. It features an 80-grit aluminum oxide abrasive on a cloth and polyester backing with an X/Y backing weight, providing a flexible yet durable cutting surface. Rated to 20,000 RPM, this disc is built for handheld disc sanders used in deburring, surface cleaning, and detailing operations on ferrous and non-ferrous metals. A 2-ply cotton-reinforced backing construction supports consistent stock removal across demanding workpiece materials.

This disc is suited for work on 300 and 400 series stainless steel, aluminum, brass, bronze, hard and soft carbon steels, and titanium. It is commonly used in fabrication shops, maintenance facilities, and metal finishing environments where controlled surface prep and deburring on small or detail areas are required. The 3-inch diameter makes it well suited to handheld disc sanders in tight or contoured work zones. Medium grit at 80 makes it appropriate for general-purpose material removal without aggressive surface damage.

Key Features

• Speed-Lok TR (Type III) and Type R quick-change attachment — no wrench required for disc swaps
• 80-grit aluminum oxide abrasive rated for medium-grade cutting on metal surfaces
• Flexible cloth and polyester backing with X/Y weight for conformability on curved surfaces
• Rated to 20,000 RPM for compatibility with standard handheld disc sanders
• Suitable for stainless steel, aluminum, brass, bronze, titanium, and carbon steels
• Brown disc color with black button for easy grit identification at a glance

Compatibility

Compatible with handheld disc sanders equipped with Speed-Lok TR (Type III) or Type R quick-change attachment systems. Part of the Norton Gemini R766/R228 series.

Installation Notes

This disc is installed and removed by a metalworker or fabricator using the Speed-Lok TR quick-change system — no additional tooling is required for mounting. Ensure the sander is powered off and disconnected from its power source before changing discs. Verify the disc is fully seated and locked onto the backing pad before resuming operation. Do not exceed the 20,000 RPM maximum speed rating marked on the disc.