3M 7100099283 Quick Change Fibre Disc 787C 4.5 in 120 Grit

Product Description

The 3M 7100099283 is a Quick Change Fibre Disc 787C designed for aggressive material removal on hard-to-grind metals. Built around 3M Precision Shaped Grain, the disc delivers higher cut rates and a cooler cutting action compared to conventional fibre discs. A grinding aid is incorporated into the construction to reduce heat buildup, making it well suited for heat-sensitive alloys. Stiff fibre backing paired with a strong resin bond provides durability and tear-resistance through demanding grinding cycles. This disc is used by metal fabricators, welders, and industrial maintenance technicians working on stainless steel and high nickel alloys.

The 787C is designed for weld removal, blending, beveling, edge chamfering, and finish refinement on stainless steel and high nickel alloys. Its quick-change attachment system allows fast disc swaps, reducing downtime during high-volume fabrication work. This disc is appropriate for both shop and field use wherever a right-angle grinder with a compatible quick-change pad is in service. Applications range from light blending passes to heavyweight weld grinding where heat management is critical to maintaining alloy integrity.

Key Features

• 3M Precision Shaped Grain delivers higher cut rates and cooler grinding action than conventional fibre discs
• Integrated grinding aid minimizes heat buildup on heat-sensitive alloys such as stainless steel and high nickel grades
• Stiff fibre backing and strong resin bond provide tear-resistance through heavy-duty applications
• Quick-change attachment system enables fast disc replacement without tools
• Suited for weld grinding, beveling, edge chamfering, and finish blending
• Compatible with 3M disc pad face plates and hubs, sold separately

Compatibility

Compatible with 3M disc pad face plates and hubs sold separately. Designed for use with right-angle grinders accepting 4.5-inch quick-change fibre discs.

Installation Notes

Installation and disc changes should be performed by qualified personnel following all applicable machine guarding and PPE requirements. Ensure the grinder is powered off and unplugged before mounting or removing the disc. Verify that the grinder spindle speed rating meets or exceeds the disc maximum rated speed before operation. Inspect the disc for damage before each use and discard any disc that shows cracks, tears, or delamination.

Technical Specifications

• Disc Diameter: 4.5 inches
• Grit: 120
• Abrasive Type: Precision Shaped Grain
• Attachment Type: Quick Change
• Backing: Stiff Fibre
• Weight: 7.621 pounds
• Package Dimensions: 21.59 x 6.7 x 6.95 inches
• Unit of Measure: Each
• UPC: 076308896589

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100099283