3M 7010307991 Diamond Lapping Film Disc 4.125 in Markdown

The 3M 7010307991 is a diamond lapping film disc designed for precision finishing of extremely hard materials. The disc features precisely graded diamond abrasive particles coated onto a dimensionally stable polyester film backing. This construction delivers a consistent, repeatable surface finish with each pass. It is used primarily in optical, semiconductor, fiber optic, and precision mechanical applications where tight surface tolerances are required. Technicians and precision grinding specialists who demand uniform results across high-hardness substrates rely on this disc format for flat lapping and edge finishing work.

This diamond lapping film disc is suited for both light production and precision finishing environments. The 4.125-inch diameter format fits standard lapping fixtures and polishing machines used in shop and lab settings. The disc is available in multiple grades ranging from 0.10 to 30.0 micron, allowing selection of the appropriate cut rate and surface finish for the specific material and application. It is sold individually and is intended for single-disc procurement or integration into an existing lapping process.

Key Features

• Precisely graded diamond particles provide a uniform, repeatable finish on hard materials
• Polyester film backing promotes flat surface contact and sharp edge retention
• Fast cut rate supports increased throughput in production finishing operations
• Available in grades from 0.10 to 30.0 micron for application-specific selection
• Available in disc, sheet, and roll formats for process flexibility

Compatibility

Designed as an OEM-style replacement or process consumable for standard lapping and polishing equipment that accepts 4.125-inch diameter film discs.

Installation Notes

This disc is installed by precision finishing technicians or lab personnel on lapping machines or polishing fixtures. Ensure the lapping plate or fixture is clean and free of contamination before mounting the disc. Apply consistent, controlled pressure during use to maintain uniform stock removal and surface finish. Follow equipment manufacturer guidelines and applicable workplace safety procedures when handling abrasive film products.

Technical Specifications

• Diameter: 4.125 inches
• Abrasive Type: Diamond
• Backing Material: Polyester Film
• Grade Range: 0.10 to 30.0 micron
• Package Dimensions: 4.2 x 4.2 x 0.02 inches
• Weight: 0.01 pounds
• Unit of Measure: Each
• UPC: 00051111724620

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7010307991