Norton 66260307838 Psa Disc 5 in 120 Grit Diamond

Product Description

The NORTON 66260307838 is a 5-inch PSA (pressure-sensitive adhesive) abrasive disc designed for precision surface finishing on hard materials. Built on a flexible cloth backing, this disc mounts directly to PSA-compatible backup pads without fasteners or hook-and-loop systems. The 120-grit diamond abrasive delivers fine-grade cutting action suited for grinding, lapping, and finishing operations where consistent scratch patterns and long abrasive life are required. The flexible cloth substrate conforms to slightly contoured surfaces, reducing pressure variation across the contact area. Machinists, tool-and-die technicians, and surface finishing professionals are the typical end users for this disc type.

This disc is used in bench grinding, surface preparation, and precision lapping applications across metalworking, composite fabrication, and stone or ceramic finishing environments. The diamond abrasive material makes it well suited for hard-to-grind substrates including carbide, ceramics, glass, and hardened steel. It is compatible with 5-inch PSA backup pads and rotary finishing tools configured for that diameter. No vacuum holes are present, so this disc is intended for use on solid backup pads rather than dust-extraction systems.

Key Features

• 120-grit diamond abrasive for fine-grade material removal and surface finishing
• Pressure-sensitive adhesive backing mounts directly to PSA-compatible pads
• Flexible cloth backing conforms to mildly contoured work surfaces
• No vacuum holes — designed for solid backup pad use
• Black disc color; part of the NORTON D71S series
• Suited for hard substrates including carbide, ceramics, and hardened steel

Compatibility

Designed for use with 5-inch PSA backup pads on rotary grinders, sanders, and lapping machines. No specific compatible model numbers were provided in the product data.

Installation Notes

Ensure the backup pad surface is clean and free of debris before applying the PSA disc; contaminants under the adhesive layer reduce bond strength and disc life. Power down and de-energize the tool before mounting or removing any abrasive disc. Press the disc firmly onto the backup pad from center to edge to eliminate air pockets. Inspect the disc for tears or delamination before each use and replace immediately if damage is found.