Arc Abrasives 31663 Surface Conditioning Disc 3in 40 Grit

Product Description

The ARC ABRASIVES 31663 is a 3-inch surface conditioning disc designed for aggressive material removal and edge grinding on metal. Built with an extremely flexible backing and 100 percent cotton abrasive construction, this Type R disc conforms closely to workpiece surfaces for consistent, controlled stock removal. At 40 grit, it delivers a coarse cut suited to initial surface prep and heavy grinding passes. Weighing just 0.0176 pounds, the disc is lightweight and easy to handle during extended use. It is intended for professional fabricators and metalworkers who require reliable performance on demanding surface conditioning tasks.

This disc is engineered for edge grinding applications on cold rolled mild steel and stainless steel sheet. Its flexible construction allows it to follow contours and edges without gouging or undercutting the base material. Typical use cases include weld seam blending, surface preparation before coating, and deburring operations in fabrication shops and field service environments. The Type R mount style provides a secure attachment to compatible right-angle grinders and disc holders.

Key Features

• Extremely flexible backing conforms to edges and contours for even material removal
• 100 percent cotton abrasive construction for consistent cut and finish
• 40 grit coarse cut suited to heavy surface prep and edge grinding
• 3-inch diameter in a Type R mount configuration
• Rated for use on cold rolled mild steel and stainless steel sheet

Compatibility

Designed for use with Type R compatible right-angle grinders and disc holders rated for 3-inch surface conditioning discs. Suitable for cold rolled mild steel and stainless steel sheet applications.

Installation Notes

Installation and disc changes should be performed by qualified metalworkers or fabricators following the grinder manufacturer's safety guidelines. Ensure the grinder is fully powered down and unplugged before mounting or removing the disc. Verify that the grinder's rated RPM meets or exceeds the disc's maximum operating speed before use. Always wear appropriate PPE including eye protection and gloves when operating abrasive discs.

Technical Specifications

• Diameter: 3 inches
• Grit: 40
• Mount Type: Type R
• Abrasive Material: 100 percent cotton
• Weight: 0.0176 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 50

Standard Information

• Brand: ARC ABRASIVES
• Manufacturer Part Number: 31663