3M 7100178246 Mounted Flap Wheel 120 Grit Aluminum Oxide

Product Description

The 3M 7100178246 is a mounted flap wheel abrasive designed for precision grinding, blending, and finishing on metal and similar hard surfaces. It carries a 120 grit aluminum oxide coated abrasive on a cloth backing with an XE backing weight, placing it in the fine grade category. The 1/4-inch shank mounts directly in a die grinder or rotary tool, making it a standard choice for machinists, fabricators, and maintenance technicians who need controlled material removal in tight spaces. Maximum rated speed is 30,000 RPM. The non-interleaved flap construction delivers consistent contact and even wear across the face.

This mounted flap wheel suits deburring, contour blending, and surface conditioning work on welds, inside bores, slots, and irregular profiles. Its compact 1-inch diameter and 1-inch face width make it especially practical for internal ID work, tube ends, and recessed areas that larger wheels cannot reach. It is commonly used in job shops, maintenance facilities, and light manufacturing environments where a die grinder or high-speed rotary tool is the primary hand tool.

Key Features

• 120 grit aluminum oxide coated abrasive for fine material removal and surface blending
• 1-inch diameter and 1-inch face width sized for internal and recessed surface access
• 1/4-inch shank for direct mounting in standard die grinders and rotary tools
• Rated to 30,000 RPM for compatibility with high-speed pneumatic and electric die grinders
• Cloth backing with XE backing weight provides flexibility for contoured surface contact
• Non-interleaved flap design delivers even wear and consistent finish

Compatibility

Designed for use with standard 1/4-inch collet die grinders and rotary tools. Verify that the tool's rated free speed does not exceed 30,000 RPM before mounting.

Installation Notes

Installation is performed by machinists, fabricators, or maintenance technicians familiar with rotary abrasive tooling. Power down and de-energize the tool completely before inserting or removing the shank from the collet. Confirm the collet is the correct 1/4-inch size and tighten securely before operation. Always inspect the wheel for damage before each use and do not exceed the 30,000 RPM maximum rated speed.