3M 7000028122 Diamond Lapping Film Disc 5 Inch

Product Description

The 3M 7000028122 is a 5-inch diameter diamond lapping film disc designed for precision surface finishing and material removal on flat surfaces. Part of the 662XW series, it 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. This disc is used in optical, fiber optic, semiconductor, and precision mechanical finishing applications where consistent flatness and controlled material removal are required. Installation and use are typically performed by precision finishing technicians, tool and die workers, and fiber optic assembly professionals.

This disc is suited for applications demanding a flat finish without edge rounding, including lapping of fiber optic connectors, ceramic ferrules, metal components, and optical substrates. The 662XW formulation is available in multiple micron grades — 0.50, 1.0, 1.50, 3.0, 6.0, and 9.0 micron — allowing technicians to progress through graded finishing sequences from stock removal to final polish. The 5-inch diameter format fits standard lapping fixtures and polishing machines used in production and bench environments.

Key Features

• Higher diamond concentration delivers increased cut rate over standard diamond lapping film
• Stronger resin bond adds durability and extends abrasive life, reducing disc change frequency
• Flat surface finish with no edge rounding — critical for fiber optic and optical component work
• Available in 0.50, 1.0, 1.50, 3.0, 6.0, and 9.0 micron grades for multi-step finishing sequences
• Also available in rolls and sheets for alternate fixturing needs

Compatibility

Designed as an OEM-style replacement disc for use in standard 5-inch lapping and polishing fixtures common to fiber optic connector finishing, precision optical grinding, and flat surface lapping applications.

Installation Notes

This disc is typically applied by precision finishing technicians or fiber optic assembly professionals using a lapping fixture or polishing machine. Ensure the lapping plate or fixture is clean and flat before mounting the disc to avoid uneven wear. Work through micron grades in descending order — coarser to finer — to achieve optimal surface quality. Follow facility safety guidelines for abrasive use, including appropriate eye protection and dust control measures.

Technical Specifications

• Diameter: 5 inches
• Abrasive Type: Diamond
• Series: 662XW
• Available Micron Grades: 0.50, 1.0, 1.50, 3.0, 6.0, 9.0 micron
• Weight: 0.01 pounds
• Package Length: 7.71 inches
• Package Width: 6.88 inches
• Package Height: 4.7 inches
• Unit of Measure: Each
• UPC: 00051111500545

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000028122