3M 7000044836 Diamond Lapping Film Disc 8 Inch

Product Description

The 3M 7000044836 is a PSA-backed diamond lapping film disc designed for precision finishing of extremely hard materials. Built on the 668X platform, it uses precisely graded diamond abrasive particles coated onto a dimensionally stable polyester film substrate. The pressure-sensitive adhesive backing simplifies mounting to flat lapping plates, reducing setup time between abrasive changes. At 8 inches in diameter, this disc delivers a consistent, repeatable surface finish across a range of micron grades from 0.10 to 30.0 micron. It is used by precision machinists, optical technicians, and toolroom professionals who require controlled material removal and tight surface finish tolerances.

This disc is suited for lapping and polishing operations on ceramics, carbide, hardened steel, optical glass, and similar hard substrates. The PSA backing makes it compatible with standard flat lapping machines and rotary lapping fixtures that accept self-adhesive discs. Its consistent diamond particle distribution supports flat surface retention with minimal edge rounding, making it appropriate for both production and rework applications where geometry control is critical.

Key Features

• PSA backing for quick, secure mounting to lapping plates and fixtures
• Precisely graded diamond particles for consistent, repeatable finish results
• Available in grades ranging from 0.10 to 30.0 micron
• Fast cut rate supports increased throughput on hard materials
• Flat surface geometry with low edge rounding
• Long abrasive life reduces frequency of disc changes

Compatibility

Designed for use on extremely hard materials including ceramics, carbide, and hardened metals; compatible with flat lapping machines and rotary fixtures that accept 8-inch PSA-backed abrasive discs.

Installation Notes

Clean and dry the lapping plate surface before applying the PSA disc to ensure full adhesion and prevent slippage during operation. Press the disc firmly from the center outward to eliminate air pockets. Power down all rotating equipment completely before mounting or removing abrasive discs. Follow the machine manufacturer guidelines and applicable shop safety protocols when handling diamond abrasive products.

Technical Specifications

• Diameter: 8 inches
• Abrasive Type: Diamond
• Backing Type: PSA (Pressure-Sensitive Adhesive)
• Film Substrate: Polyester
• Micron 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: 7000044836