Merit Abrasives 08834180122 Mandrel Extension 1/4 in Shank

Product Description

The MERIT ABRASIVES 08834180122 is a mandrel extension designed for use with cartridge spiral rolls, allowing abrasive finishing tools to reach into deep cavities, bores, and contoured surfaces that standard mandrels cannot access. The extension features a 0.25-inch pilot diameter and a 0.25-inch mandrel shank diameter, with a total overall length of 7.25 inches. The 6-inch shank length provides the added reach required in precision deburring, blending, and finishing operations across metalworking, fabrication, and maintenance applications. This hardware is typically installed by machinists, toolmakers, and maintenance technicians working with rotary abrasive tooling.

This mandrel extension is suited for use in portable die grinders and similar rotary power tools where extended reach is needed for internal finishing work. Common applications include deburring bores, blending weld seams in recessed areas, and surface conditioning in tight-access locations found in manufacturing and repair environments. The 1.5-inch pilot length ensures positive engagement with compatible cartridge spiral roll assemblies.

Key Features

• 0.25-inch pilot diameter for secure cartridge spiral roll engagement
• 1.5-inch pilot length provides stable abrasive mount connection
• 0.25-inch mandrel shank diameter fits standard rotary tool collets
• 6-inch shank length extends reach into deep bores and cavities
• 7.25-inch overall length for maximum accessibility in tight-access finishing work

Compatibility

Designed as an OEM-style replacement mandrel extension compatible with cartridge spiral roll abrasive assemblies requiring a 0.25-inch shank and 0.25-inch pilot interface.

Installation Notes

Installation is performed by machinists or abrasive tooling technicians using a standard die grinder or rotary tool with a matching collet size. Confirm the collet is fully tightened and the tool is powered off and disconnected from the air supply or power source before mounting or removing the mandrel extension. Do not exceed the rated RPM of the abrasive cartridge roll being used with this extension. Inspect the pilot and shank for wear or damage before each use.