3M 7100031778 Aluminum Oxide Lapping Disc 5 Inch

Product Description

The 3M 7100031778 is an aluminum oxide lapping disc engineered for precision abrasive finishing work. The disc features aluminum oxide mineral coated onto a 3 mil polyester film backing using a durable resin system. It is available in seven grades ranging from 0.05 to 60.0 micron, allowing technicians to select the appropriate cut for the task. The harder resin system delivers consistent cut rate, finish quality, and disc life across the full grade range. This disc measures 5 inches in diameter and is used by fiber optic technicians and precision grinding operators who require repeatable, controlled material removal.

This lapping disc is suited for fiber optic connector end-face finishing and roll superfinishing applications where tight surface tolerances are required. The tight particle distribution ensures uniform abrasion across the disc surface, reducing the risk of scratches or inconsistent finish. It is used in both production and field environments where controlled, repeatable finishing is critical. The disc format makes it compatible with standard disc-based lapping and polishing fixtures used in these trades.

Key Features

• Aluminum oxide mineral on 3 mil polyester film backing for dimensional stability
• Tight particle distribution for consistent, uniform surface finish
• Harder resin system than 261X for improved durability and disc life
• Consistent cut rate and finish across the full grade range
• Available in seven grades from 0.05 to 60.0 micron
• Available in disc, sheet, and roll formats

Compatibility

Designed for use in fiber optic finishing and roll superfinishing applications requiring precision lapping discs with controlled micron-grade abrasive surfaces.

Installation Notes

This disc is installed and used by fiber optic technicians and precision machining operators on disc-based lapping and polishing fixtures. Power down or de-energize any motorized fixture before mounting or removing the disc. Ensure the backing plate surface is clean and free of debris before seating the disc to avoid uneven contact. Follow the equipment manufacturer guidelines for disc attachment and replacement intervals.

Technical Specifications

• Mineral Type: Aluminum Oxide
• Backing: 3 mil Polyester Film
• Disc Diameter: 5 inches
• Grade Range: 0.05 to 60.0 micron
• Number of Grades Available: 7
• Weight: 2.28 pounds
• Package Length: 7.71 inches
• Package Width: 6.88 inches
• Package Height: 4.7 inches
• UPC: 051141416477

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100031778