3M 7000044724 Diamond Lapping Film Disc 5 Inch Psa

Product Description

The 3M 7000044724 is a 5-inch diameter PSA-backed diamond lapping film disc designed for precision surface finishing on extremely hard materials. Part of the 668X series, it features precisely graded diamond abrasive particles coated onto a polyester film substrate. The pressure-sensitive adhesive backing allows quick attachment to compatible backing pads or flat platens. This disc delivers a consistent, repeatable finish and is widely used in applications requiring tight surface tolerances. Technicians and machinists rely on it for achieving flat, uniform surfaces with minimal edge rounding across a broad range of finishing grades from 0.10 to 30.0 micron.

This disc is suited for lapping and polishing operations on hard substrates such as ceramics, carbide, optical glass, and hardened metals. It is commonly used in tool and die shops, optical fabrication, fiber optic connector polishing, and precision machining environments. The PSA backing simplifies disc changes during multi-step lapping sequences, supporting efficient throughput in production and repair settings. It is available in multiple grades to accommodate stock removal through final finishing stages.

Key Features

• PSA backing for fast, secure attachment to lapping plates and backing pads
• Precisely graded diamond particles for a consistent, repeatable surface finish
• Flat surface output with low edge rounding on hard materials
• Long abrasive life reduces frequency of disc changes and downtime
• Available in grades ranging from 0.10 to 30.0 micron
• Fast cut rate supports increased throughput in production environments

Compatibility

Designed for use on extremely hard materials including ceramics, carbide, optical components, and hardened metals. Compatible with standard 5-inch PSA lapping plates and backing pads used in precision finishing operations.

Installation Notes

Installation is performed by machinists, optical technicians, or precision finishing specialists. Ensure the backing plate or platen surface is clean and free of debris before applying the PSA disc to achieve full adhesive contact. Avoid contaminating the abrasive surface with oils or coolants incompatible with the lapping process. Discs should be replaced when cut rate diminishes or surface finish consistency degrades.

Technical Specifications

• Diameter: 5 inches
• Backing Type: Pressure-Sensitive Adhesive (PSA)
• Abrasive Material: Diamond
• Substrate: Polyester Film
• Grade Range: 0.10 to 30.0 micron
• Unit of Measure: Each
• Weight: 0.01 pounds
• UPC: 00051111538630

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000044724