3M Scotch-Brite 18730 Green 2 x 5/8 Inch Grit 50 Ceramic Aluminum Oxide Bristle Disc – 10/Carton

Description

3M Scotch-Brite 18730 Green Grit 50 Bristle Disc – 10/Carton for Aerospace Weld and Corrosion Prep

3M Scotch-Brite 18730 Green Grit 50 Ceramic Aluminum Oxide Bristle Disc is a unique abrasive product combining the flexibility of a bristle brush with the cutting action of a coated abrasive — individual abrasive-coated plastic bristles extend from a disc hub, each bristle tip containing ceramic aluminum oxide mineral that contacts the workpiece with a flailing action as the disc rotates. This bristle disc technology provides aggressive surface preparation and corrosion removal while the individual bristle flexibility prevents gouging and over-cutting that would occur with rigid abrasive wheels or rigid flap discs.

The green color designation indicates Grit 50 coarse grade, making the 18730 appropriate for aggressive operations — weld joint preparation, corrosion removal, heavy scale removal, and initial surface preparation where significant material removal is required before subsequent finishing with finer grades. The ceramic aluminum oxide mineral provides superior cutting performance and mineral longevity compared to conventional aluminum oxide, particularly on hard and tough aerospace alloys including high-strength steels and titanium.

The 2-inch diameter disc is sized for use with die grinders and small right-angle grinders, providing access to tight areas, weld joints, inside radii, and confined spaces on aircraft structure that larger discs cannot reach. The 10-carton pack provides a working supply of discs for MRO repair operations and structural maintenance tasks.

Technical Information

3M Scotch-Brite Bristle Discs use a patented construction where individual thermoplastic bristles are coated with abrasive mineral at their working tips. The bristles are mounted in a radial pattern around the disc hub, providing an open, flexible abrasive tool that contacts the workpiece with a controlled flailing action. Each bristle tip flexes individually as the disc rotates, conforming to the surface profile and delivering abrasive mineral contact without the rigid high-pressure contact of conventional grinding wheels that can cause gouging, chatter marks, or work hardening.

Grit 50 ceramic aluminum oxide provides aggressive cutting action on tough aerospace materials — the ceramic mineral fractures at a controlled rate to expose fresh cutting edges throughout the disc’s life, providing consistent cut rate performance rather than the declining cut rate of conventional aluminum oxide that dulls without fracturing. This self-sharpening characteristic is particularly valuable for corrosion removal and weld joint preparation on hard aerospace alloys where maintaining consistent cutting action is important for efficient material removal.

Mount the 18730 on a compatible die grinder or small right-angle grinder with the appropriate arbor size. Operate at the disc’s rated maximum RPM — do not exceed the rated speed. The bristle disc is particularly effective for weld joint preparation, corrosion removal from tight areas, and accessing confined spaces on aircraft structure that larger diameter discs cannot reach.

Why Choose?

• ✅ Bristle Disc Technology — Flexible, non-gouging abrasive action
• ✅ Ceramic Aluminum Oxide — Superior cutting and self-sharpening mineral
• ✅ Grit 50 Coarse — Aggressive material removal and corrosion prep
• ✅ 2-inch Compact Size — Access to tight areas and confined spaces
• ✅ Die Grinder Compatible — For precision power tool application

Applications

Scotch-Brite 18730 Bristle Discs are used for weld joint preparation, corrosion removal, scale and oxidation removal on aircraft structural components, surface preparation in tight areas and inside radii, and aggressive initial surface conditioning in aerospace structural repair and MRO operations.

Frequently Asked Questions

Q: What is 3M Scotch-Brite 18730?
A: The 18730 is a Grit 50 Coarse Ceramic Aluminum Oxide Bristle Disc — flexible individual bristles with abrasive tips provide aggressive, non-gouging surface preparation for weld joints, corrosion removal, and tight-area work with die grinders.

Q: MPN for 3M Scotch-Brite 18730 10-carton?
A: MPN is 7000008742.

Q: What is the advantage of bristle disc over grinding wheel?
A: Bristle discs flex individually, conforming to surface profile without gouging — unlike rigid grinding wheels that can gouge, create chatter marks, or cause work hardening at high contact pressure. The flailing action also reduces heat build-up.

Q: What tool is used with the 18730 bristle disc?
A: The 2-inch disc is designed for die grinders and small right-angle grinders. Use with the appropriate arbor and do not exceed the disc’s rated maximum RPM.

Q: How many discs in a carton?
A: Each carton contains 10 Scotch-Brite 18730 Green Grit 50 Bristle Discs.