Overview
The 3M 100X 3″x24″ sanding belts are aluminum oxide cloth belts designed for high-volume industrial applications requiring aggressive stock removal. Rated at 100 grit, these belts deliver efficient material removal on ferrous metals and general-purpose surfaces. This box contains 10 belts, each measuring 3 inches wide by 24 inches long—the standard size for belt sanders across manufacturing, fabrication, and maintenance operations.
Key Features
- Aluminum oxide abrasive mineral — proven durability and cutting rate for metalworking
- X-weight cloth backing — durable, heat-resistant construction for extended belt life
- 100 grit specification — medium coarseness ideal for stock removal and finishing applications
- Resin-bonded — ensures abrasive particles stay firmly attached under heat and pressure
- Standard 3″×24″ size — compatible with most portable and stationary belt sanders
Technical Specifications
- Grit Rating: 100 (medium coarse)
- Abrasive Material: Aluminum oxide
- Belt Width: 3 inches
- Belt Length: 24 inches
- Backing Material: X-weight cloth
- Bond Type: Resin (phenolic)
- Quantity per Box: 10 belts
- Condition: New in Box
- Applications: Metalworking, stock removal, general industrial finishing
Typical Applications
3M 100X belts are widely used in fabrication shops, machine shops, and maintenance facilities for:
- Stock removal and deburring on ferrous metals
- Weld seam preparation and rough finishing
- General-purpose sanding on cast iron and steel
- Edge breaking and beveling on metal workpieces
- Portable belt sander work in field maintenance
Compatibility & Replacements
Compatible With
- Portable belt sanders (3″×24″ chuck configuration)
- Stationary belt/disc sanders accepting 3″×24″ belts
- Industrial finishing machines with X-weight cloth backing support
- All standard belt sander drive systems (contact wheel and platen configuration)
Replaces / Drop-In Replacement For
- 3M 340D (100 grit cloth belt, similar specifications)
- Other OEM and aftermarket 3″×24″ 100-grit cloth belts
Works With
- Makita, DeWalt, Milwaukee, and other major belt sander brands with 3″×24″ specifications
- Industrial belt grinding machines across metalworking sectors
- Wet and dry sanding setups (verify contact wheel compatibility)



