Overview
The 3M 3″ sanding disc 50 grit is a professional-grade abrasive disc engineered for metalworking, fabrication, and general grinding applications. This 12-pack contains durable aluminum oxide discs with a polyester cloth backing and resin bond, rated for a maximum speed of 20,000 RPM. Ideal for edge beveling, deburring, grinding, and finishing on all ferrous and non-ferrous metals.
Key Features
- Aluminum Oxide Abrasive: Self-fracturing mineral that exposes fresh cutting edges for consistent performance and fast cut rates on metal surfaces.
- 50 Grit Size: Medium-coarse grit suitable for stock removal, deburring, and blending operations on all metals.
- Polyester Cloth Backing: Durable YF-weight cloth backing provides flexibility and toughness for medium to heavy-pressure applications.
- Resin Bond Construction: Heat-resistant resin coating bonds the abrasive to the backing, maintaining stability under high heat, pressure, and water exposure.
- High RPM Rating: Maximum operating speed of 20,000 RPM enables efficient material removal in workshop and industrial settings.
- Versatile Applications: Suitable for use with standard disc sanders, angle grinders, and bench grinders when paired with appropriate adapters.
Technical Specifications
- Disc Diameter: 3 inches
- Grit Rating: 50
- Abrasive Material: Aluminum Oxide
- Backing Material: Polyester cloth (YF-weight)
- Bond Type: Resin (heat-resistant)
- Color: Green
- Maximum RPM: 20,000
- Application Type: Dry
- Quantity Per Pack: 12 discs
- Suitable for: All metals (ferrous and non-ferrous)
Typical Applications
- Deburring: Remove sharp edges and burrs from machined or cut metal parts.
- Edge Beveling: Prepare edges on metal stock for welding, assembly, or finishing operations.
- Grinding & Blending: Blend weld seams, grinding joints, and surface preparation on steel and aluminum.
- Rust & Paint Removal: Strip rust, old paint, and oxidation from metal surfaces in restoration and maintenance work.
- Metal Fabrication: General-purpose finishing in fabrication shops, tool and die operations, and metal repair.
Compatibility & Replacements
Compatible With
- 3″ disc sanders and bench grinders with appropriate mounting pads
- Angle grinders with 3″ disc adapters (verify RPM rating compatibility)
- Die grinders and rotary tools with 3″ disc attachments
- Standard 1/4″ air or electric drills fitted with 3M 05540 adapter or equivalent
- Both dry sanding and general-purpose metal finishing workflows
Replaces / Drop-In Replacement For
- 3M 361F Roloc discs (non-quick-change versions)
- 3M Green Corps 3″ sanding discs in comparable grit ratings
- Generic aluminum oxide cloth-backed 3″ discs, 50 grit
Works With
- Roloc-style quick-change systems (verify attachment compatibility)
- Hook-and-loop (Velcro) backup pads with proper interface
- Standard threaded or adhesive sanding pad mounts
- Any metalworking, fabrication, or maintenance shop workflow requiring 50 grit abrasive finishing
