3M 7100104929 Ceramic Fibre Disc 4 Inch 36 Grit

Product Description

The 3M 7100104929 is a coated abrasive fibre disc designed for high-speed material removal on carbon steel and similarly demanding ferrous surfaces. Built around 3M Precision Shaped Grain ceramic abrasive technology, the disc delivers significantly higher cut rates and longer service life than conventional aluminum oxide or zirconia fibre discs. The stiff vulcanized fibre backing combined with a strong resin bond resists tearing under aggressive grinding pressure. At 4 inches in diameter and 36 grit, this disc is sized for angle grinders used in heavy-duty weld grinding, beveling, edge chamfering, and surface blending operations in fabrication and maintenance environments.

This disc is suited for professional metalworking applications including structural steel fabrication, pipe fitting, and heavy equipment repair. Typical use cases include weld bead removal, joint preparation, and surface conditioning on carbon steel workpieces. The 36-grit designation makes it appropriate for aggressive stock removal rather than finish work. Compatible with standard 3M disc pad face plates and hubs, which are sold separately. Minimum order quantity for this SKU is 100 discs per order.

Key Features

• 3M Precision Shaped Grain ceramic abrasive delivers higher cut rates per disc than conventional abrasive minerals
• Engineered for rapid stock removal on carbon steel, including weld grinding, beveling, and edge chamfering
• Stiff fibre backing and strong resin bond provide tear resistance under sustained grinding pressure
• Long-lasting abrasive mineral reduces disc change frequency and lowers per-part abrasive cost
• Compatible with 3M disc pad face plates and hubs, sold separately

Compatibility

Designed for use with 3M disc pad face plates and hubs sold separately. Verify grinder arbor size and disc pad compatibility before installation.

Installation Notes

Installation is performed by metal fabricators and maintenance technicians using a right-angle grinder equipped with an appropriate backing pad and hub assembly. Ensure the grinder is unplugged or the air supply is disconnected before mounting or changing discs. Inspect the disc for cracks or damage before each use and never operate a damaged disc. Follow ANSI B7.1 and applicable shop safety standards for abrasive wheel use, including proper RPM rating verification before operation.

Technical Specifications

• Disc Diameter: 4 inches
• Grit: 36
• Abrasive Type: Precision Shaped Ceramic
• Backing: Coated Fibre
• Unit of Measure: Each
• Minimum Order Quantity: 100
• Package Weight: 4.134 pounds
• Package Length: 11.21 inches
• Package Width: 6.7 inches
• Package Height: 6.95 inches
• UPC: 051125872787

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100104929