3M 7000000306 Diamond Lapping Film 30.0 Micron Roll

Product Description

The 3M 7000000306 is a diamond lapping film designed for precision surface finishing on extremely hard materials. Precisely graded diamond abrasive particles are coated onto a dimensionally stable polyester film backing, delivering a consistent and repeatable finish with each pass. This roll measures 4 inches wide by 150 feet long and is wound on a 3-inch core. At 30.0 micron grit, it is suited for stock removal and initial surface conditioning stages in a lapping or polishing sequence. Machinists, tool and die technicians, fiber optic technicians, and precision finishing specialists are the primary installers and users of this product.

Diamond lapping film in the 30.0 micron grade is typically used in the early stages of a multi-step lapping or polishing process on materials such as ceramics, carbide, hardened steel, sapphire, and optical glass. The roll format is well suited for automated finishing equipment, lapping fixtures, or hand-lapping applications where a continuous supply of fresh abrasive surface is needed. It is commonly used in optical component manufacturing, precision tooling, and fiber optic connector end-face preparation.

Key Features

• Precisely graded 30.0 micron diamond abrasive for controlled, repeatable stock removal
• Diamond particles bonded to a dimensionally stable polyester film backing
• Roll format (4 inches x 150 feet) provides continuous fresh abrasive surface
• 3-inch core compatible with standard lapping and polishing equipment spindles
• Effective on extremely hard substrates including ceramics, carbide, and optical materials
• Part of a multi-grade family ranging from 0.10 to 30.0 micron for full finishing sequences

Compatibility

Designed for use with lapping and polishing equipment accepting 3-inch core rolls, 4 inches wide. Suitable for precision finishing applications on hard materials where consistent diamond abrasive performance is required.

Installation Notes

This product is typically handled by precision machining technicians, optical fabricators, or fiber optic technicians. Ensure lapping fixtures and drive equipment are properly stopped and locked out before loading or changing film rolls. Keep the abrasive surface clean and free of contamination to maintain consistent finish quality. Follow equipment manufacturer guidelines for roll tensioning and feed rate to avoid tearing or uneven wear of the film.

Technical Specifications

• Abrasive Grade: 30.0 micron
• Roll Width: 4 inches
• Roll Length: 150 feet
• Core Diameter: 3 inches
• Backing Material: Polyester film
• Abrasive Type: Diamond
• Unit of Measure: Roll
• Weight: 6 pounds
• UPC: 00051111499665

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000306