3M 7000000324 Lapping Film 261X 5.0 Micron 4x150 Ft Roll

Product Description

The 3M 7000000324 is a precision lapping film designed for controlled, uniform surface finishing across a range of substrates. Built on a 3 mil polyester film base, it features precisely graded 5.0 micron aluminum oxide (AlO) abrasive particles coated in a consistent layer for repeatable results. The roll format measures 4 inches wide by 150 feet long and fits a 3 inch ASO keyed core, making it compatible with standard automated and semi-automated lapping and polishing equipment. This film is suited for applications where tight surface finish tolerances are required, and is typically handled by precision machining technicians, optical finishing specialists, and fiber optic connector polishing professionals.

This lapping film roll is used in precision finishing operations where a controlled scratch pattern and consistent surface geometry are critical. The 5.0 micron grade positions it as a mid-range cut for progressive polishing sequences, often used after coarser stock removal steps and before finer finishing stages. Typical applications include fiber optic connector end-face polishing, precision optical component lapping, and fine finishing of hardened metal or ceramic surfaces. The roll format supports continuous-feed polishing machines and high-volume production setups.

Key Features

• 5.0 micron precisely graded aluminum oxide abrasive for controlled, uniform material removal
• Coated on a durable 3 mil polyester film backing for dimensional stability during lapping
• 4 inch wide by 150 foot roll length supports extended production runs
• 3 inch ASO keyed core for secure, accurate mounting on compatible lapping equipment
• Delivers consistent surface finishes across metallic, ceramic, and optical substrates
• Available in multiple micron grades (0.30, 3.0, 5.0, 9.0, 12.0, and 30.0 micron) for full progressive polishing sequences

Compatibility

Designed for use with lapping and polishing equipment that accepts a 3 inch ASO keyed core, 4 inch wide roll stock. Suitable for precision finishing of fiber optic connectors, optical components, and hardened substrates requiring controlled surface geometry.

Installation Notes

Installation and loading of the lapping film roll should be performed by qualified technicians familiar with the specific lapping or polishing machine in use. Ensure the polishing machine is powered down and all moving components have come to a full stop before loading or changing a roll. Verify that the ASO keyed core seats securely on the machine spindle before resuming operation. Follow the equipment manufacturer's guidelines for feed rate, pressure settings, and film advance intervals to avoid uneven wear or film breakage.

Technical Specifications

• Abrasive Grade: 5.0 micron
• Abrasive Material: Aluminum Oxide
• Backing Thickness: 3 mil polyester film
• Roll Width: 4 inches
• Roll Length: 150 feet
• Core Size: 3 inches ASO Keyed
• Unit of Measure: Roll
• Minimum Order Quantity: 4
• Weight: 1.35 pounds
• UPC: 00051144140893

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000000324