Value Collection CR-21 Cartridge Roll Mandrel

Product Description

The VALUE COLLECTION CR-21 is a cartridge roll mandrel designed to hold and drive cartridge rolls during grinding, deburring, and finishing operations. The mandrel features a 0.25 inch pilot diameter and 1 inch pilot length, paired with a 0.25 inch shank diameter and 1 inch shank length, for a 3 inch overall length. The quick-change design allows fast cartridge roll swaps without removing the mandrel from the tool. Machinists, tool and die makers, and metal fabricators use this mandrel in die grinders and similar rotary tools for surface blending, edge work, and bore finishing.

This mandrel is suited for use in light to medium metal removal and finishing applications. It is commonly used in fabrication shops, maintenance environments, and production settings where consistent cartridge roll positioning is required. The 3 inch overall length provides adequate reach for most standard inline and right-angle die grinder setups. Individual unit packaging makes it a practical single-replacement option for bench stock.

Key Features

• 0.25 inch pilot diameter accepts standard cartridge rolls
• 1 inch pilot length provides stable roll support during use
• 0.25 inch shank diameter fits standard die grinder collets
• 3 inch overall length suits inline and right-angle die grinder configurations
• Quick-change design enables fast cartridge roll replacement

Compatibility

Designed as a standard replacement or bench-stock mandrel for use with cartridge rolls in die grinders and rotary tools accepting a 0.25 inch shank.

Installation Notes

Installation is performed by machinists or metal fabricators using standard die grinder collet hardware. Ensure the rotary tool is powered off and unplugged before inserting or removing the mandrel. Verify that the collet size matches the 0.25 inch shank diameter before tightening. Do not exceed the RPM rating of the cartridge roll being used with this mandrel.