3M 7000044868 Aluminum Oxide Lapping Film Disc 5 Inch

Product Description

The 3M 7000044868 is a 5-inch aluminum oxide lapping film disc designed for precision surface finishing across a wide range of substrates. It features tightly graded aluminum oxide particles coated onto a 3-mil polyester film backing. That construction delivers a consistent cut rate, uniform finish, and predictable service life from disc to disc. The disc is part of 3M's standard lapping film line, available in micron grades of 0.30, 3.0, 5.0, 9.0, 12.0, and 30.0, allowing technicians to match abrasive aggressiveness to the finish requirement. This product is sold individually and suited for controlled lapping and polishing operations in trade and industrial settings.

This lapping film disc is used in applications requiring fine surface conditioning, such as finishing fiber optic connectors, precision mechanical components, cutting tool edges, and optical surfaces. The 5-inch disc format fits standard lapping fixtures and backing plates. Its polyester film substrate resists tearing and maintains flatness under load, making it a reliable choice for repetitive production finishing tasks as well as precision one-off work. Technicians in manufacturing, tool and die, and optical assembly commonly specify this product when a repeatable, uniform surface finish is required across multiple workpieces.

Key Features

• Tightly graded aluminum oxide particles ensure consistent cut rate and finish across the disc surface
• 3-mil polyester film backing maintains flatness and resists tearing during lapping operations
• Available in six micron grades: 0.30, 3.0, 5.0, 9.0, 12.0, and 30.0 microns
• 5-inch diameter format fits standard lapping plates and fixtures
• Delivers uniform finishes on metals, ceramics, composites, and other substrates

Compatibility

Designed for use with standard 5-inch lapping fixtures and backing plates used in precision surface finishing applications across industrial and trade settings.

Installation Notes

Mount the disc securely to a clean, flat backing plate before use to prevent uneven wear or finish inconsistency. Ensure the workpiece and fixture are free of contamination that could introduce scratches or compromise the finish. Select the appropriate micron grade for the required surface finish before beginning a lapping sequence. Proper technique and consistent pressure are critical to achieving repeatable results.

Technical Specifications

• Disc Diameter: 5 inches
• Abrasive Material: Aluminum Oxide
• Backing Material: 3-mil Polyester Film
• Available Micron Grades: 0.30, 3.0, 5.0, 9.0, 12.0, 30.0 microns
• Unit of Measure: Each
• Weight: 0.01 pounds
• UPC: 00051111501399

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000044868