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The MERIT ABRASIVES 69957339739 is a ceramic alumina unmounted flap wheel designed for aggressive material removal on metal and other hard surfaces. Built with a coated abrasive construction and an X-weight cloth backing, this flap wheel delivers consistent stock removal at an 80 grit, coarse grade. The 1/4-20 threaded center hole allows secure mounting to a compatible mandrel or arbor, and the wheel is rated to a maximum of 20,000 RPM. At 3 inches in outside diameter and 1 inch in face width, it is well suited for use with a die grinder or right-angle tool. Metalworkers, fabricators, and maintenance technicians rely on this type of wheel for weld blending, surface conditioning, and edge deburring.
This flap wheel is intended for coarse grinding and surface preparation tasks on metal components in fabrication shops, maintenance facilities, and industrial production environments. The ceramic alumina abrasive cuts aggressively and self-sharpens during use, making it effective on hardened steels and stainless steel where sustained cut rate matters. The unmounted design requires a separately sourced 1/4-20 threaded mandrel, which is standard in most shop tooling setups. It is packaged and sold individually.
Designed for use with any standard 1/4-20 threaded grinding mandrel. Verify that the host tool RPM rating meets or exceeds the wheel maximum RPM before installation.
Installation should be performed by a qualified operator familiar with abrasive wheel safety practices. Always power down and disconnect the tool before mounting or removing the flap wheel. Confirm that the spindle speed of the grinder does not exceed the 20,000 RPM maximum rating of the wheel. Inspect the wheel for damage before each use and follow ANSI B7.1 safety standards for abrasive wheel handling and guarding.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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