3M 7100105539 Aluminum Oxide Cross Pad 120 Grit Fine

Product Description

The 3M 7100105539 is an aluminum oxide cross pad designed for fine-grade surface finishing and deburring tasks. Rated at 120 FEPA grit, it delivers consistent stock removal and surface conditioning on metal, composites, and other hard materials. The pad measures 1 inch long by 1 inch wide by 0.375 inches thick and is constructed with a cloth backing rated at X backing weight with 8-ply construction for durability under load. A maximum operating speed of 24,000 RPM makes it compatible with high-speed rotary tools and inline die grinders. Machinists, fabricators, and maintenance technicians use this pad for reaching confined areas that flat abrasive media cannot access.

This cross pad is suited for use in tight internal geometries such as bores, slots, keyways, and contoured recesses. The cross configuration allows the pad to flex and conform to irregular surfaces while maintaining consistent abrasive contact. It is well-matched for deburring machined parts, blending weld seams in restricted spaces, and preparing surfaces prior to coating or inspection. The 8-32 inch eyelet size is compatible with standard mandrels used with rotary power tools in metalworking and maintenance environments.

Key Features

• 120 FEPA grit for fine-grade material removal and surface blending
• Aluminum oxide abrasive delivers consistent cut on ferrous and non-ferrous metals
• X-weight cloth backing with 8-ply construction resists tearing under high-speed use
• 24,000 RPM maximum operating speed suits high-speed die grinders and rotary tools
• Cross pad geometry reaches confined bores, slots, and contoured recesses
• 8-32 inch eyelet size fits standard rotary tool mandrels

Compatibility

Designed for use with standard 8-32 mandrels on rotary die grinders and inline power tools used in metalworking, fabrication, and general maintenance applications.

Installation Notes

Installation should be performed by machinists or maintenance technicians familiar with rotary abrasive tooling. Verify the tool spindle speed does not exceed 24,000 RPM before mounting the pad. Secure the pad firmly to the mandrel and inspect for damage before each use. Always wear appropriate eye protection and follow applicable workplace safety standards when operating rotary abrasive tools.