Arc Abrasives 71-077804 Resin Fiber Disc 7in Grit 50 25 Pack

Product Description

The ARC ABRASIVES 71-077804 is a resin fiber disc engineered for aggressive material removal on mild steel and similar ferrous surfaces. At 7 inches in diameter with a 7/8 inch arbor hole and a 50-grit cut, this disc delivers fast stock removal in angle grinder applications. The Predator line uses self-sharpening abrasive grains that continuously fracture during use, exposing fresh cutting edges and extending disc life. This makes the 71-077804 a cost-effective alternative to full ceramic disc options for shops and field crews running high-volume grinding tasks. Metal fabricators, pipefitters, and ironworkers are the primary users of this product type.

This disc is suited for grinding, blending, and light deburring on mild steel in both shop and field environments. The 50-grit designation targets aggressive cutting rather than finishing work, making it appropriate for weld seam removal, surface prep before coating, and edge cleanup on fabricated steel components. Each box contains 25 discs, supporting sustained production use without frequent restocking. The 7-inch diameter is compatible with standard large-angle grinders commonly found in fabrication and structural steel work.

Key Features

• Self-sharpening abrasive grains continuously expose fresh cutting edges for consistent stock removal
• 50-grit cut rate suited for aggressive grinding and weld seam removal on mild steel
• 7 inches x 7/8 inches sizing fits standard large-angle grinder backing pads
• Cost-effective alternative to full ceramic abrasive discs for high-volume applications
• 25 discs per box reduces per-unit cost for production and field crews

Compatibility

Designed as an OEM-style replacement-grade resin fiber disc for use with standard 7-inch angle grinders equipped with a 7/8-inch arbor backing pad. Optimized for mild steel applications.

Installation Notes

Resin fiber discs are installed by licensed fabricators and trade professionals using standard angle grinders with a matched backing pad. Always confirm the grinder RPM rating meets or exceeds the disc maximum RPM before mounting. Inspect the disc for cracks or damage before each use and do not use damaged discs. Wear appropriate PPE including a face shield and grinding gloves per OSHA 1910.243 guidelines when operating angle grinders.

Technical Specifications

• Disc Diameter: 7 inches
• Arbor Size: 7/8 inches
• Grit: 50
• Box Quantity: 25 discs
• Weight: 1.25 pounds
• Application: Mild steel grinding and surface preparation

Standard Information

• Brand: ARC ABRASIVES
• Manufacturer Part Number: 71-077804