3M 7100077942 Diamond Lapping Film Disc 4.25 Inch

Product Description

The 3M 7100077942 is a diamond lapping film disc from the 662XW series, designed for precision surface finishing and material removal on hard substrates. This disc features a higher diamond concentration and a stronger resin bond compared to standard diamond lapping film, resulting in increased cut rate and extended abrasive life. At 4.25 inches in diameter, it delivers a flat, consistent cutting action that minimizes surface rounding. It is used by machinists, fiber optic technicians, and precision finishing professionals who require controlled, repeatable results across multiple passes.

This disc is suited for precision lapping applications where tight surface finish tolerances are required. Typical uses include fiber optic connector end-face polishing, ceramic and carbide component finishing, and optical surface preparation. The 662XW series is available in multiple micron grades including 0.50, 1.0, 1.50, 3.0, 6.0, and 9.0 micron, allowing technicians to step through grit sequences for progressive finishing. The disc format suits rotary lapping fixtures and hand lapping plates commonly used in production and field service environments.

Key Features

• Higher diamond concentration delivers increased cut rate over standard diamond lapping film
• Stronger resin bond improves durability and extends abrasive life
• Flat cutting action prevents surface rounding on precision components
• Long abrasive life reduces disc change frequency during production runs
• Available in 0.50, 1.0, 1.50, 3.0, 6.0, and 9.0 micron grades for progressive finishing
• Also available in rolls and sheets for alternate lapping setups

Compatibility

Designed for use in rotary and flat lapping applications requiring precision diamond abrasive media, including fiber optic polishing and hard-material surface preparation.

Installation Notes

Installation and use should be performed by machinists or technicians familiar with precision lapping equipment and abrasive media handling. Ensure the lapping fixture or polishing plate is clean and free of contamination before mounting the disc. Follow the equipment manufacturer's recommended load and speed settings for diamond film media. Do not exceed the rated operating conditions for the lapping fixture.

Technical Specifications

• Diameter: 4.25 inches
• Series: 662XW
• Available Micron Grades: 0.50, 1.0, 1.50, 3.0, 6.0, 9.0 micron
• Weight: 0.01 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 25
• UPC: 00051111501474

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100077942