3M 7100113109 Cubitron Ii Hookit Disc 947A 3 Inch 60 Grit

Product Description

The 3M 7100113109 is a Cubitron II Hookit Cloth Disc in the 947A series, designed for aggressive material removal on metal surfaces. Built on an X-weight polyester-cotton cloth backing, this 3-inch diameter disc uses 3M Precision Shaped Grain technology to cut faster and last longer than conventional abrasive grains. The 60-grit cut rating and integrated grinding aid make it well suited for medium to high pressure grinding applications. It is rated to 15000 RPM and handles stainless steel, carbon steel, cobalt chrome, nickel alloys, and other exotic alloys. Metal fabricators, welders, and industrial maintenance technicians are the primary installers and users of this disc.

This disc is built for production-level grinding and blending in fabrication shops, manufacturing facilities, and industrial maintenance environments. The Hookit attachment system allows the disc to be mounted and removed quickly from compatible random orbital and disc sanders, reducing changeover time during high-volume work. It is appropriate for both flat-surface grinding and edge work on hard metals where heat buildup and surface discoloration are concerns. The grinding aid chemistry actively reduces friction-generated heat, helping protect workpiece integrity on heat-sensitive alloys.

Key Features

• Precision Shaped Grain construction cuts faster than conventional abrasive grain, increasing throughput
• Hookit hook-and-loop attachment system enables fast disc changes and disc reuse over the full service life
• X-weight polyester-cotton cloth backing withstands aggressive grinding pressure without tearing
• Integrated grinding aid reduces heat buildup and lowers grinding temperatures at the contact zone
• Resin bond system resists heat and helps prevent surface discoloration on finished metal
• 60-grit designation suited for medium to high stock removal on ferrous and non-ferrous metals

Compatibility

Designed for use on stainless steel, carbon steel, cobalt chrome, nickel alloys, and other exotic alloys. Compatible with random orbital disc grinders and sanders equipped with a Hookit hook-and-loop backup pad sized for 3-inch discs running up to 15000 RPM.

Installation Notes

Disc installation and removal should be performed with the grinder or sander powered off and disconnected from its power source. Verify that the tool spindle speed does not exceed the 15000 RPM rating marked on the disc before operation. Use a compatible Hookit backup pad to ensure full surface contact and secure attachment. Always wear appropriate PPE including eye protection, gloves, and hearing protection when operating grinding equipment.

Technical Specifications

• Disc Diameter: 3 inches
• Grit: 60
• Maximum Speed: 15000 RPM
• Backing Material: X-weight polyester-cotton cloth
• Attachment Type: Hookit hook-and-loop
• Package Weight: 2.96 pounds
• Package Length: 6.88 inches
• Package Width: 6.88 inches
• Package Height: 5.88 inches
• Unit of Measure: Each
• UPC: 076308457001

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100113109