3M 7100200272 Fibre Disc 787C 3 Inch 120 Grit

Product Description

The 3M 7100200272 is a 3-inch fibre disc in the 787C series, engineered for high-speed material removal on hard-to-grind metals. It uses 3M Precision Shaped Grain, a ceramic abrasive mineral that delivers faster cut rates and a cooler grinding action compared to conventional fibre discs. A built-in grinding aid further reduces heat buildup, making this disc well suited to heat-sensitive materials such as stainless steel and high nickel alloys. The 120-grit designation targets blending, finish refinement, and weld removal. Fabricators, welders, and metal finishing technicians working in industrial and manufacturing environments are the primary users of this product.

This disc is designed for demanding metalworking applications including weld grinding, beveling, edge chamfering, and surface blending on stainless steel and high nickel alloys. Its stiff fibre backing and strong resin bond resist tearing under heavy lateral loads, making it appropriate for both handheld angle grinders and disc pad setups. It is sold individually and requires a compatible disc pad face plate and hub, which are sold separately.

Key Features

• Precision Shaped Grain ceramic mineral provides higher cut rates and cooler operating temperatures than conventional abrasive grains
• Integrated grinding aid reduces heat generation during use on heat-sensitive alloys
• Stiff fibre backing and heavy-duty resin bond deliver durability and tear resistance under sustained load
• 120 grit is optimized for weld removal, surface blending, and finish refinement
• 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 on stainless steel and high nickel alloys in weld grinding, beveling, and blending applications.

Installation Notes

Installation and disc changes should be performed by qualified personnel with the grinder fully powered down and disconnected from its power source. Verify that the spindle speed rating of the grinder does not exceed the maximum RPM rating of the disc before mounting. Wear appropriate PPE including face shield, gloves, and hearing protection during operation. Inspect the disc for damage before each use and discard any disc showing cracks, tears, or delamination.