3M 7100113871 Cubitron Ii Hookit 947A 6 Inch 120 Grit Disc

Product Description

The 3M 7100113871 is a Cubitron II Hookit Cloth Disc in the 947A series, engineered for aggressive material removal on demanding metals. It uses 3M Precision Shaped Grain bonded to an X-weight polyester-cotton cloth backing, a construction that delivers fast, consistent cuts across medium to high pressure grinding applications. A built-in grinding aid reduces heat generation at the workpiece, helping to protect surface integrity on heat-sensitive alloys. Resin bonding further resists thermal buildup to minimize discoloration. The 6-inch diameter disc runs at up to 12000 RPM and is rated for use on stainless steel, carbon steel, cobalt chrome, nickel alloys, and other exotic alloys.

This disc is suited for fabrication shops, weld grinding operations, and finishing work where heat control and cut rate on hard metals are priorities. The Hookit attachment system allows fast disc changes and supports disc reuse throughout its usable life, reducing downtime during high-volume grinding tasks. It is commonly used by metal fabricators, welders, and maintenance trades working with stainless and exotic alloy components in both shop and field environments.

Key Features

• Precision Shaped Grain delivers fast cut rates for improved productivity on hard metals
• Hookit attachment system allows tool-free disc changes and disc reuse
• X-weight polyester-cotton cloth backing handles aggressive sanding and grinding pressure
• Grinding aid reduces heat and lowers grinding temperatures at the workpiece
• Resin bond resists heat buildup and helps prevent surface discoloration
• Rated for stainless steel, carbon steel, cobalt chrome, nickel alloys, and exotic alloys

Compatibility

Designed for use with Hookit-compatible random orbital and disc sanders or grinders that accept 6-inch hook-and-loop backed abrasive discs rated for operation at or below 12000 RPM.

Installation Notes

Disc mounting and removal should be performed with the tool powered off and unplugged or the air supply disconnected. Verify the tool's maximum RPM rating meets or exceeds the disc's 12000 RPM rating before use. Inspect the disc for damage before each use and discard any disc showing tears, perforations, or separation of the grain layer. Grinding on stainless steel requires clean, dedicated abrasives to avoid cross-contamination that can cause corrosion.