3M 7000044837 Diamond Lapping Film Disc 8 Inch Psa

Product Description

The 3M 7000044837 is a PSA-backed diamond lapping film disc designed for precision finishing of extremely hard materials. Built on the 668X platform, this disc features precisely graded diamond particles coated on a durable polyester film substrate. The pressure-sensitive adhesive backing allows secure, repeatable mounting on flat lapping fixtures. Available in grades ranging from 0.10 to 30.0 micron, this disc delivers a consistent, uniform finish with fast material removal rates and minimal edge rounding. It is used by precision machinists, optical technicians, and tool-and-die professionals who require tight surface finish tolerances.

This lapping film disc is suited for flat lapping and polishing of hard substrates including carbide, ceramics, hardened steel, and optical components. The PSA backing simplifies disc changes and maintains consistent contact across the full 8-inch working surface. Its long abrasive life reduces the frequency of disc changes, supporting higher throughput in production and repair environments. The disc format is appropriate for use on rotary lapping machines and flat-lap stations common in precision manufacturing and metrology shops.

Key Features

• PSA backing for secure, tool-free mounting and fast disc changes
• Precisely graded diamond abrasive particles for consistent, repeatable finish quality
• Available in micron grades from 0.10 to 30.0 micron to match finishing stage requirements
• Flat surface geometry with low edge rounding for accurate workpiece profiles
• Long abrasive service life reduces downtime from frequent disc replacement
• Polyester film backing provides dimensional stability during lapping operations

Compatibility

Designed for use on rotary flat-lap machines and lapping stations that accept 8-inch PSA-backed abrasive discs. Suitable for finishing extremely hard materials including carbide, ceramics, and hardened metals.

Installation Notes

This disc is installed by a machinist or precision finishing technician on a compatible flat-lap or rotary lapping machine. Ensure the platen surface is clean and free of debris before applying the PSA disc to prevent uneven contact or premature delamination. Power down the lapping machine before mounting or removing the disc. Follow the machine manufacturer guidelines for platen speed and applied load appropriate to the selected micron grade.

Technical Specifications

• Disc Diameter: 8 inches
• Abrasive Material: Diamond
• Backing Type: PSA (Pressure-Sensitive Adhesive)
• Film Substrate: Polyester
• Abrasive 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: 7000044837