3M 7000044730 Diamond Lapping Film Disc 8 Inch Psa

Product Description

The 3M 7000044730 is a PSA-backed diamond lapping film disc designed for precision finishing of extremely hard materials. This disc uses precisely graded diamond abrasive particles coated onto a polyester film substrate, producing flat, uniform surfaces with minimal edge rounding. It is the pressure-sensitive adhesive version of the 661X product line. Available in grades ranging from 0.10 to 30.0 micron, the 7000044730 delivers consistent, repeatable results across a wide range of finishing applications. Machinists, optical technicians, and precision fabricators use this disc where surface finish tolerances are tight and material hardness makes conventional abrasives impractical.

This diamond lapping disc is suited for use on hard substrates including ceramics, carbides, hardened steels, optical glass, and similar materials. The PSA backing allows quick, secure attachment to flat lapping plates and disc holders used in precision grinding and polishing operations. It is commonly found in manufacturing, optical finishing, toolroom, and metrology support applications where a uniform, repeatable surface finish is required across production runs.

Key Features

• PSA backing for fast, secure attachment to lapping plates and disc holders
• Precisely graded diamond abrasive particles for consistent, repeatable finish
• Effective on extremely hard materials including ceramics and carbides
• Produces flat surfaces with low edge rounding
• Long abrasive life reduces downtime from frequent disc changes
• Available in grades from 0.10 to 30.0 micron to suit varied finish requirements

Compatibility

Designed as an OEM-style replacement disc for flat lapping and polishing applications requiring diamond abrasive film on hard or brittle materials.

Installation Notes

Clean the lapping plate surface thoroughly before applying the PSA-backed disc to ensure full, bubble-free adhesion. Apply firm, even hand pressure across the disc surface after placement to seat the adhesive uniformly. Power down any motorized lapping equipment before disc changes. Follow applicable shop safety practices when working with diamond abrasives, including appropriate eye and hand protection.

Technical Specifications

• Disc Diameter: 8 inches
• Abrasive Type: Diamond
• Backing Type: PSA (Pressure-Sensitive Adhesive)
• Film Substrate: Polyester
• Grade Range: 0.10 to 30.0 micron
• Weight: 0.03 pounds
• Unit of Measure: Each
• Minimum Order Quantity: 25

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000044730