3M 16847 Deburring Wheel Mandrel 1/4 Inch Shank

Product Description

The 3M 16847 is a mandrel designed to mount unitized deburring wheels to rotary power tools for metalworking deburring and finishing operations. The 1/4 inch shank diameter fits standard drill chucks and die grinders, while the 1.875 inch shank length provides adequate reach for most inline and right-angle tool configurations. Compatible with wheels ranging from 2 to 4 inches in diameter and 3/4 inch wide with a 3/8 inch center hole, this mandrel serves as the connecting hardware between the abrasive wheel and the drive tool. Machinists, fabricators, and maintenance technicians use this mandrel as a replacement or spare when outfitting a shop for edge deburring and surface conditioning work.

This mandrel is suited for use in metal fabrication shops, manufacturing facilities, and maintenance environments where unitized deburring wheels are used to remove burrs, smooth weld seams, or prepare metal surfaces. It is compatible with 3/8 inch hole deburring wheels in the 2 to 4 inch diameter range and 3/4 inch wheel width, making it a standard fitment for benchtop or handheld rotary tool setups. Sold individually, it is a practical replacement part for shops that cycle through deburring wheels frequently.

Key Features

• 1/4 inch shank diameter fits standard drill chucks and die grinder collets
• 1.875 inch shank length for reliable tool engagement
• Accepts unitized deburring wheels from 2 to 4 inches in diameter
• Compatible with 3/4 inch wide wheels with a 3/8 inch center hole
• Sold as single unit for individual replacement or backup use

Compatibility

Designed for use with unitized deburring wheels 2 to 4 inches in diameter, 3/4 inch wide, with a 3/8 inch center hole. The 1/4 inch shank is compatible with standard drill chucks and die grinder collets accepting 1/4 inch tooling.

Installation Notes

Installation is typically performed by machinists or tool operators familiar with rotary abrasive tooling. Ensure the power tool is fully powered off and unplugged before mounting or removing the mandrel. Thread the deburring wheel onto the mandrel per the wheel manufacturer's instructions and secure it before tool operation. Always verify that the mandrel shank is fully seated and locked in the tool chuck before use, and confirm the tool RPM rating does not exceed the maximum rated speed of the mounted wheel.