Arc Abrasives 71-10828AF Predator Flap Disc 50 Grit 10-pack

Product Description

The ARC ABRASIVES 71-10828AF is a hard-edge flap disc engineered for aggressive material removal on metal surfaces. Sold in a box of 10, each disc measures 4.5 inches in diameter with a 7/8-inch arbor hole and carries a 50-grit abrasive rating. The disc is rated to 13,300 RPM, making it compatible with standard 4.5-inch angle grinders used in fabrication and weld prep environments. The Predator series is designed for fast weld removal while maintaining disc life beyond what standard flap discs typically deliver. Metal fabricators, welders, and maintenance professionals are the primary installers and operators of this product.

This flap disc is well suited for use on mild steel, high-alloy steel, nickel alloy, and stainless steel applications. The 50-grit designation places it in the coarse category, making it appropriate for heavy stock removal, weld seam grinding, and surface conditioning before secondary finishing passes. It performs in both shop fabrication settings and field repair scenarios where angle grinder access is available. The hard-edge construction maintains disc geometry under lateral pressure, which is useful during weld flush work and edge blending on structural steel components.

Key Features

• 50-grit abrasive for aggressive stock removal and weld grinding
• Hard-edge construction maintains shape under lateral load
• Rated to 13,300 RPM for use with standard 4.5-inch angle grinders
• Compatible with mild steel, high-alloy steel, nickel alloy, and stainless steel
• Sold in a box of 10 discs for shop and job-site stocking

Compatibility

Designed for use with 4.5-inch angle grinders accepting a 7/8-inch arbor. Suitable for grinding mild steel, high-alloy steel, nickel alloy, and stainless steel workpieces.

Installation Notes

Flap discs are mounted and operated by welders, metal fabricators, and maintenance technicians using a compatible angle grinder. Before mounting, confirm the grinder is unplugged or the battery pack is removed. Verify the grinder free-speed rating meets or exceeds the 13,300 RPM disc rating before operation. Wear appropriate PPE including face shield, gloves, and hearing protection during use.

Technical Specifications

• Disc Diameter: 4.5 inches
• Arbor Size: 7/8 inches
• Grit: 50
• Max RPM: 13,300 RPM
• Box Quantity: 10 discs
• Weight: 0.6 pounds

Standard Information

• Brand: ARC ABRASIVES
• Manufacturer Part Number: 71-10828AF