3M 7100038550 Diamond Lapping Film Disc 10 Inch Psa

Product Description

The 3M 7100038550 is a 10-inch diameter PSA-backed diamond lapping film disc designed for precision surface finishing on extremely hard materials. Part of the 668X series, it features precisely graded diamond abrasive particles coated on a durable polyester film backing. The pressure-sensitive adhesive mount allows fast, secure attachment to compatible lapping platens. This disc delivers a consistent, repeatable finish across a range of micron grades from 0.10 to 30.0 microns, making it a reliable choice for technicians and machinists who require tight surface tolerances on hard substrates.

This diamond lapping disc is used in precision finishing applications where conventional abrasives fall short. Typical use cases include optics lapping, ceramic component finishing, carbide tooling, fiber optic connector polishing, and other industrial processes that demand flat surfaces with minimal edge rounding. The 668X series is the PSA-backed counterpart to the 661X product line, offering the same abrasive performance with the convenience of a self-adhesive backing for quick disc changes and repeatable positioning.

Key Features

• PSA backing for fast, secure platen attachment and quick disc changes
• Precisely graded diamond particles provide uniform, repeatable surface finish
• Flat surface geometry with low edge rounding for tight tolerance work
• Fast cut rate increases throughput on hard material applications
• Long abrasive life reduces the frequency of disc changes
• Available in grades from 0.10 to 30.0 microns to suit various finish requirements

Compatibility

Designed for use on extremely hard materials including ceramics, carbides, glass, and optical components; compatible with lapping equipment that accepts 10-inch PSA-backed discs.

Installation Notes

Installation is performed by trained technicians or machinists operating precision lapping equipment. Ensure the platen surface is clean and free of debris before applying the PSA-backed disc to achieve full adhesion and a flat seating surface. Power down the lapping machine before mounting or removing discs. Avoid contaminating the abrasive surface with oils or incompatible compounds that could affect cut rate or finish quality.

Technical Specifications

• Diameter: 10 inches
• Backing Type: PSA (Pressure-Sensitive Adhesive)
• Abrasive Material: Diamond
• Film Substrate: Polyester
• Grade Range: 0.10 to 30.0 micron
• Series: 668X
• UPC: 051111616852
• Unit of Measure: Each
• Minimum Order Quantity: 10

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100038550