3M 7010309448 Aluminum Oxide Psa Disc 4 Inch

Product Description

The 3M 7010309448 is a 4-inch diameter coated abrasive disc built for precision finishing applications. Aluminum oxide mineral is coated on a 3-mil polyester film backing using a durable resin system. The disc uses a pressure-sensitive adhesive (PSA) backing for fast mounting and removal. Available in seven abrasive grades ranging from 0.05 to 60.0 micron, it delivers consistent cut rate and finish across a wide range of surface finish requirements. The harder resin system compared to the 261X series contributes to longer disc life and more predictable performance.

This disc is designed for high-precision finishing work, most commonly fiber optic connector end-face finishing and roll superfinishing operations. The tight particle distribution of the aluminum oxide mineral helps maintain controlled surface finishes where consistency across a production run matters. It is well suited for use in manufacturing and service environments where repeatable results are required across multiple abrasive grades in sequence.

Key Features

• PSA backing for quick mounting and removal on compatible platens
• Tight particle size distribution for consistent surface finish results
• Harder resin system than 261X for improved disc life
• Available in seven grades from 0.05 to 60.0 micron
• Consistent cut rate, finish quality, and disc life across grades
• Also available in sheets and rolls for alternate fixturing needs

Compatibility

Designed for use with PSA-compatible lapping and finishing platens in fiber optic polishing and roll superfinishing applications.

Installation Notes

Mounting is performed by pressing the PSA-backed disc firmly onto a clean, flat platen surface, ensuring no air pockets are trapped beneath the disc. The platen and disc surface should be free of debris and oils before application to maintain full adhesive contact. Remove and replace the disc when cut rate or finish quality degrades. Follow the equipment manufacturer's procedures for disc removal and platen maintenance.

Technical Specifications

• Diameter: 4 inches
• Backing Material: 3-mil polyester film
• Abrasive Mineral: Aluminum oxide
• Backing Type: Pressure-sensitive adhesive (PSA)
• Available Grades: 0.05 to 60.0 micron (7 grades)
• Weight: 0.01 pounds
• Package Length: 15.5 inches
• Package Width: 13.5 inches
• Package Height: 1.9 inches
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010309448