3M 048011-33794 Scotch-Brite Roloc SI-Dr 3 Inch Coarse SL Surface Conditioning Disc – Carton of 4

Description

3M Scotch-Brite SI-Dr Roloc 3in Coarse SL Surface Conditioning Disc – Carton of 4

3M Scotch-Brite SI-Dr Coarse SL Surface Conditioning Disc is a Roloc-mounted non-woven abrasive disc for aggressive surface conditioning, corrosion removal, and heavy de-glossing operations with die grinders. The SI-Dr designation indicates silicon carbide (SI) abrasive mineral in a durable (Dr) disc construction, while the Coarse grade provides aggressive cutting action for operations requiring significant material removal or heavy surface conditioning in a quick-change die grinder format.

The coarse grade is appropriate for initial surface preparation steps, removing existing coatings, corrosion removal, and de-glossing heavily contaminated or poorly adherent existing finishes on aircraft surfaces where Very Fine and Ultra-Fine grade non-woven discs would require excessive passes to achieve the required surface condition. Coarse grade Scotch-Brite provides faster surface preparation with more aggressive de-glossing and contamination removal while still maintaining the non-gouging, conformable characteristics of non-woven construction.

The carton of 4 provides a small working supply for targeted use on repair areas, specific surface conditioning operations, and die grinder-based MRO surface preparation tasks where only a few discs are required to complete the work. The Roloc attachment allows the coarse SI-Dr disc to be rapidly changed with finer grade discs as the surface preparation progresses through the required preparation sequence.

Technical Information

3M Scotch-Brite SI-Dr Surface Conditioning Discs use silicon carbide abrasive mineral in a non-woven fiber construction optimized for the more aggressive cutting demands of coarse grade surface conditioning. Silicon carbide is a harder, sharper mineral than aluminum oxide, providing more aggressive initial cutting action on hard, abrasion-resistant surfaces — particularly effective for initial de-glossing of hard aerospace coatings, corrosion-hardened surfaces, and surface scale removal from steel structural components.

The SL designation in the product name indicates the specific disc construction variant within the SI-Dr product family. The Coarse SL variant provides the most aggressive cut rate within the Scotch-Brite surface conditioning disc range, appropriate for surface preparation operations where maximum material removal per pass is required to minimize the number of passes needed to achieve the required surface condition. This is particularly important when working in confined areas on aircraft structure where tool access is limited.

Use the SI-Dr Coarse SL with a die grinder at the recommended operating speed. Apply moderate, consistent pressure — the coarse grade provides aggressive cutting action with moderate pressure, and excessive pressure can reduce disc life and produce an excessively rough surface that requires additional passes with finer grades to bring to the required surface condition. Follow coarse grade surface conditioning with successively finer grades (Very Fine, Ultra-Fine) as required by the surface preparation specification.

Why Choose?

• ✅ Silicon Carbide Abrasive — Aggressive cutting for coarse surface conditioning
• ✅ Roloc Quick-Change — Fast die grinder mounting and disc changes
• ✅ Coarse Grade — Efficient heavy de-glossing and corrosion removal
• ✅ Non-Gouging Construction — Non-woven conformability prevents over-cutting
• ✅ 3M Scotch-Brite Quality — Trusted non-woven abrasive brand

Applications

SI-Dr Coarse SL discs are used for initial surface preparation and de-glossing of aircraft surfaces, corrosion removal from structural components, heavy coating removal, and aggressive surface conditioning in tight areas and confined spaces accessed by die grinders.

Frequently Asked Questions

Q: What is 3M Scotch-Brite SI-Dr Coarse SL?
A: SI-Dr Coarse SL is a silicon carbide Roloc surface conditioning disc in Coarse grade — providing aggressive de-glossing, corrosion removal, and surface preparation with a die grinder while maintaining non-woven conformability.

Q: MPN for 3M Scotch-Brite SI-Dr Coarse SL 4-carton?
A: MPN is 7006046218.

Q: When would Coarse grade be used instead of Very Fine?
A: Use Coarse when more aggressive material removal or de-glossing is required — initial surface preparation of heavily contaminated surfaces, corrosion removal, and removing poorly adherent existing coatings where Very Fine grade would be too slow.

Q: What does SI-Dr mean in the product name?
A: SI indicates silicon carbide abrasive mineral. Dr indicates the durable disc construction variant of Scotch-Brite surface conditioning discs. SL further specifies the disc construction within the product family.

Q: How many discs in a carton?
A: Each carton contains 4 Scotch-Brite SI-Dr Roloc Coarse SL Surface Conditioning Discs.