Norton 66254461161 Flap Disc 40 Grit Type 29 Zirconia

Product Description

The NORTON 66254461161 is a Type 29 zirconia alumina flap disc engineered for aggressive material removal on angle grinders. It carries a 40-grit coarse rating and is rated to 13,300 RPM, making it suitable for heavy grinding, weld blending, and surface prep on steel and other metals. The cloth backing provides durability and flexibility that allows the disc to conform to contoured or flat work surfaces. This disc is a standard item in fabrication, maintenance, and construction trades where fast stock removal is required.

This flap disc is used in metal fabrication shops, structural steel work, pipeline work, and general maintenance applications. The Type 29 conical design presents the abrasive at an angle, concentrating grinding pressure and increasing material removal rate compared to flat Type 27 discs. It is particularly effective for blending welds, removing mill scale, and preparing surfaces for coating or further finishing. Trade professionals running 4.5-inch angle grinders will find this a direct-fit option for standard arbor configurations.

Key Features

• 40-grit coarse abrasive for fast material removal and weld blending
• Zirconia alumina abrasive material delivers long service life on steel and ferrous metals
• Type 29 conical geometry increases grinding pressure for aggressive stock removal
• Cloth backing resists tearing and provides flexibility on contoured surfaces
• Rated to 13,300 RPM for use with standard 4.5-inch angle grinders
• 7/8-inch center hole fits standard arbor attachments

Compatibility

Designed for use with 4.5-inch angle grinders equipped with a standard 7/8-inch arbor attachment.

Installation Notes

Installation should be performed by a qualified operator following the grinder and disc manufacturer guidelines. Confirm the grinder RPM rating meets or does not exceed the disc maximum of 13,300 RPM before mounting. Always power down and disconnect the tool before changing discs, and verify the disc is properly seated and the guard is in place before operation. Inspect the disc for cracks or damage prior to each use and discard any disc that shows signs of delamination or impact damage.