Norton 66254491941 Ceramic Alumina Flap Disc 40 Grit

Product Description

The NORTON 66254491941 is a Type 27 ceramic alumina flap disc designed for aggressive material removal on angle grinders. It features a 40-grit coarse grade abrasive on a cloth backing, rated for a maximum of 12,000 RPM. The flat-profile Type 27 geometry suits flat and edge grinding applications. Ceramic alumina abrasive resists heat buildup and fractures to expose fresh cutting edges during use, extending disc life compared to standard aluminum oxide. This disc is used by welders, metal fabricators, pipefitters, and ironworkers for weld blending, surface prep, and stock removal on ferrous and non-ferrous metals.

This flap disc fits angle grinders with a 5/8-11 arbor, the standard thread for most 5-inch grinders in the trade. The Type 27 flat profile is well suited to flat surface grinding and blending welds flush. The trimmable design allows the operator to extend disc life by trimming worn flaps to expose fresh abrasive. It is a single disc per package with a minimum order quantity of five units, making it appropriate for shop stocking or multi-job procurement.

Key Features

• Ceramic alumina abrasive self-sharpens during use for consistent cut rate
• Type 27 flat profile for flat surface grinding and weld blending
• 40-grit coarse grade for aggressive stock removal
• Cloth backing provides flexibility and durability under load
• Trimmable flaps extend usable disc life
• Rated to 12,000 RPM for compatibility with standard 5-inch angle grinders

Compatibility

Designed for 5-inch angle grinders equipped with a 5/8-11 arbor thread. Suitable for grinding ferrous metals, weld seams, and surface preparation work requiring coarse material removal.

Installation Notes

Installation is performed by licensed tradespeople or qualified operators familiar with angle grinder safety. Always power down and disconnect the grinder before mounting or removing a disc. Verify the grinder's rated RPM meets or exceeds the disc's 12,000 RPM maximum before operation, and confirm the arbor thread matches 5/8-11. Wear appropriate PPE including face shield and gloves; do not exceed the marked maximum RPM.