Overview
United Abrasives 77212 SAIT-Lok surface conditioning discs are professional-grade non-woven abrasives engineered for precision finishing, deburring, and surface preparation. Made of non-woven synthetic fiber coated with aluminum oxide grain, these discs resist loading for long life without damage to or removal of base material. The all-metal attachment on disc ensures a secure fit to the backing pad, providing stable, vibration-free operation during high-speed finishing work.
Key Features
- Excellent for heavy deburring, removing weld spatter, blending tool/mill marks, and rust removal
- All-metal SAIT-Lok attachment ensures a secure fit to the backing pad (sold separately)
- Resists loading for long life without damage to or removal of base material
- Non-woven construction prevents gouging or undercutting during surface conditioning operations
- Used in a wide variety of applications including cleaning, polishing, blending and deburring
Technical Specifications
SAIT-LOK N/W DISC 3″ COARSE specification details:
- Diameter: 3 inches
- Grit Grade: Coarse (Brown)
- Material: Non-woven synthetic fiber with aluminum oxide coating
- Attachment Type: All-metal SAIT-Lok screw type
- Quantity per Box: 25 discs
- Primary Applications: Cleaning, deburring
Typical Applications
The coarse (brown) grade is excellent for heavy deburring, removing weld spatter, blending tool/mill marks, and rust removal. These discs are ideal for:
- Weld seam blending and finishing
- Removing burrs and sharp edges from machined or welded components
- Surface preparation before welding or painting
- Rust and scale removal on metal fabrication projects
- General surface conditioning on stainless steel, mild steel, and aluminum
- Composite and non-ferrous material finishing (without aggressive material removal)
Compatibility & Replacements
Compatible With
- Standard 3-inch backing pads with SAIT-Lok attachment threads
- Angle grinders and pneumatic disc sanders with 3-inch pad compatibility
- Fixed-speed or variable-speed rotary tools rated for surface conditioning discs
- Industrial finishing stations and robotic arm-mounted polishing systems
Replaces / Drop-In Replacement For
United Abrasives offers three grades of SAIT-Lok discs in 3-inch size: coarse (brown), medium (maroon), and very fine (blue). The 77212 is the coarse option. For heavier-duty or lighter-duty finishing, consider upgrading or downgrading to compatible medium or very-fine models from the same SAIT-Lok product line.
Works With
- All backing pads designed for 3-inch SAIT-Lok screw-type attachment
- Pneumatic and electric angle grinders (handheld and bench-mounted)
- High-speed rotary polishing and finishing equipment
- Professional metalworking, fabrication, and welding shops
