3M 7000044820 Aluminum Oxide Lapping Disc 12 Inch Psa

Product Description

The 3M 7000044820 is a 12-inch diameter aluminum oxide lapping disc designed for precision surface finishing applications. It features aluminum oxide mineral coated onto a 3 mil polyester film substrate and bonded with a durable resin system. The pressure-sensitive adhesive (PSA) backing allows for fast, secure mounting on compatible backup pads and platens. Available in seven abrasive grades ranging from 0.05 to 60.0 micron, this disc delivers a consistent cut rate, finish quality, and service life across repeated use cycles. Finishing technicians and surface preparation specialists working in high-precision environments rely on this disc for repeatable results.

This disc is well suited for fiber optic connector finishing and roll superfinishing operations where tight particle distribution and controlled cut rates are required. The harder resin system compared to the 261X series improves disc durability under sustained contact pressure. It is applicable in both production and bench-level finishing setups and is available in discs, sheets, and roll formats to match different fixturing needs. Typical users include optical fiber technicians, precision grinder operators, and quality-controlled manufacturing environments requiring consistent microfinish results.

Key Features

• PSA backing for quick, secure mounting on backup pads and platens
• Tight particle distribution supports consistent finish and cut rate
• Harder resin system than 261X series for increased durability
• Available in seven grades from 0.05 to 60.0 micron
• Suitable for fiber optic finishing and roll superfinishing applications
• Aluminum oxide mineral on 3 mil polyester film substrate

Compatibility

Designed as a PSA-backed lapping disc for use with compatible backup pads and precision finishing platens in fiber optic and superfinishing applications.

Installation Notes

Installation and replacement should be performed by qualified finishing technicians familiar with abrasive disc systems. Ensure the backup pad or platen surface is clean and free of debris before applying the PSA-backed disc to achieve full adhesion. Avoid contaminating the adhesive layer with oils or solvents prior to mounting. Follow equipment manufacturer guidelines and applicable workplace safety procedures when operating lapping or superfinishing machinery.

Technical Specifications

• Diameter: 12 inches
• Abrasive Mineral: Aluminum Oxide
• Backing Material: 3 mil polyester film
• Attachment Type: PSA (pressure-sensitive adhesive)
• Grade Range: 0.05 to 60.0 micron
• Unit of Measure: Each
• Weight: 0.04 pounds
• Package Dimensions: 14 inches x 14 inches x 7 inches
• UPC: 00051111497821

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000044820