Arc Abrasives 37112 Resin Fiber Disc 4.5in 50 Grit

Product Description

The ARC ABRASIVES 37112 is a resin fiber disc engineered for aggressive material removal on steel, aluminum, and other non-ferrous metals. Measuring 4.5 inches in diameter with a 0.875-inch arbor hole, this 50-grit disc pairs a durable fiber backing with a resin bond and integrated grinding aid to sustain cut rate and reduce heat buildup during extended grinding passes. It is a consumable abrasive used by welders, fabricators, and metalworkers who need consistent stock removal on flat or contoured surfaces without clogging or glazing.

This disc fits standard 4.5-inch angle grinders commonly found in metal fabrication shops, welding bays, and maintenance environments. The 50-grit designation places it in the coarse cutting range, making it well suited for weld seam blending, rust and scale removal, and surface preparation before coating or inspection. It performs across a range of ferrous and non-ferrous base metals, including mild steel, stainless steel, and aluminum plate or sheet.

Key Features

• 50-grit coarse abrasive for aggressive stock removal and surface preparation
• Integrated grinding aid reduces friction and heat on metal surfaces
• Resin bond construction maintains grain exposure throughout disc life
• Fiber backing provides rigidity and flexibility for flat and contoured grinding
• Compatible with 4.5-inch angle grinders via standard 0.875-inch arbor hole
• Suitable for steel, aluminum, and general non-ferrous metals

Compatibility

Designed as a standard replacement resin fiber disc for 4.5-inch angle grinders used in metal fabrication, welding, and maintenance applications.

Installation Notes

Resin fiber discs are installed and replaced by welders, fabricators, or maintenance technicians using a compatible backing pad and retaining nut on a 4.5-inch angle grinder. 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 never mount a damaged disc. Wear appropriate PPE including a face shield and gloves during operation.

Technical Specifications

• Diameter: 4.5 inches
• Arbor Size: 0.875 inches
• Grit: 50
• Weight: 1 pound
• Unit of Measure: Pack

Standard Information

• Brand: ARC ABRASIVES
• Manufacturer Part Number: 37112