3M 7100099255 Coated Fibre Disc 80 Grit 9.125 in 0.875 in Arbor

Product Description

The 3M 7100099255 is a coated fibre disc engineered for ultra-rapid stock removal on hard-to-grind metals, including stainless steel and high nickel alloys. Measuring 9.125 inches in diameter with a 0.875 inch arbor, this disc is built around 3M Precision Shaped Grain — a structured abrasive mineral that delivers higher cut rates and a cooler grinding action compared to conventional fibre discs. A built-in grinding aid further controls heat at the surface, making it well suited for heat-sensitive alloys. Licensed tradespeople and fabrication professionals working weld removal, beveling, edge chamfering, blending, and finish refinement will find this disc performs consistently across demanding applications.

This disc is intended for use in metalworking and fabrication environments — both shop and field — where surface preparation on stainless steel and high nickel alloy components is required. Typical applications include weld grinding, bevel preparation, blending, and finish refinement on structural and process piping, pressure vessels, and similar workpieces. The stiff fibre backing and strong resin bond maintain disc integrity under aggressive grinding loads. This disc is compatible with 3M disc pad face plates and hubs, sold separately.

Key Features

• 3M Precision Shaped Grain delivers higher cut rates and cooler grinding action than conventional abrasive minerals
• Built-in grinding aid reduces surface temperatures, protecting heat-sensitive alloys such as high nickel grades
• Stiff fibre backing and strong resin bond provide tear resistance and durability under heavy load
• 80 grit designation suits aggressive stock removal tasks including weld grinding, beveling, and edge chamfering
• 9.125 inch diameter and 0.875 inch arbor fit standard angle grinder configurations using compatible 3M face plates and hubs
• Longer disc life reduces changeover frequency and lowers per-part abrasive cost

Compatibility

Compatible with 3M disc pad face plates and hubs, sold separately. Designed for use on stainless steel and high nickel alloys in weld removal, blending, and finish refinement applications.

Installation Notes

Mounting and disc changes should be performed by qualified personnel following the angle grinder manufacturer's instructions and applicable ANSI B11 or OSHA abrasive wheel standards. Ensure the grinder is powered off and disconnected from its power source before mounting or removing the disc. Verify that the disc RPM rating meets or exceeds the grinder's no-load RPM before operation. Always use the appropriate 3M face plate and hub assembly rated for this disc diameter.

Technical Specifications

• Disc Diameter: 9.125 inches
• Arbor Size: 0.875 inches
• Grit: 80
• Abrasive Type: 3M Precision Shaped Grain (Coated)
• Backing: Stiff Fibre
• Bond: Resin
• Application: Stainless Steel, High Nickel Alloys
• Unit of Measure: Each
• Minimum Order Quantity: 100
• Package Weight: 15.484 pounds
• Package Length: 10.71 inches
• Package Width: 10.7 inches
• Package Height: 10.95 inches
• UPC: 076308896480

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100099255