3M Cubitron II 33446 File Belts, 1/2 in W x 18 in L, 80 Grit, Purple, 10 Belts/Carton

3M Cubitron II 33446 File Belt 1/2 in W × 18 in L 80+ Grit Precision-Shaped Ceramic Abrasive, 10 Belts/Carton

• Power through tough materials with the 3M Cubitron II 33446 File Belts. These hard-wearing belts boast an aggressive 80 grit ideal for heavy-duty stock removal and shaping applications. The 1/2 inch width by 18 inch length ensures compatibility with various sanding machines. A signature of the Cubitron II line, the purple color signifies a coarse grit for fast cutting. Each carton contains 10 belts, offering a cost-effective solution for workshops and industrial settings.
• Features
  • Features 3M's tough and best in class Cubitron II mineral
  • Grains of ceramic/aluminum oxide blend are precisely-shaped, uniformly-sized and vertically oriented
  • Slices through hard metal for fast cut
  • Cubitron II abrasives run cooler, reducing risk of metal discoloration/oxidation and heat related stress cracks
  • A grinding aid further enhances cooler running on high-strength steel
  • Exceptionally long-lasting belt performs consistently and reliably throughout its life
  • Used with the 3M File Belt Sander, easily grinds out rivets and spot welds
• Specifications
  • Part No.: 33446
  • Product Line: MMM
  • MFR Model: 33446
  • Manufacturer: 3M Products
  • Alternate Part Number-1: 60455082069
  • UPC: 051131334465
  • Brand: Cubitron II
  • Belt Width (in): 1/2
  • Grit: 80
  • Belt Length (in): 18
  • Color: Purple
  • 3M ID 60455082069, Part Number 33446
• The File Belt, 80+ Grit can also be referred to as Cubitron II abrasive belt 33446, precision-shaped grain file belt, ceramic sanding belt 1/2×18, metal deburring belt, spot-weld removal belt.

3M is a global leader in industrial abrasives, known for developing Precision-Shaped Grain technology that redefined abrasive performance. The Cubitron II line is respected for delivering fast, long-lasting belts that excel in professional metal fabrication, collision repair, and heavy-duty manufacturing.

Q: Will this belt fit my 3M File Belt Sander?
A: Yes, this 1/2 in × 18 in belt is compatible with 3M File Belt Sanders like model 28366 and most other file belt machines designed for that size.

Q: Can it be used on stainless or high-strength steel?
A: Absolutely. The precision-shaped ceramic grain and grinding aid keep the belt running cool, reducing heat build-up that can discolor or stress high-strength alloys.

Q: How often should I replace the belt?
A: Replace when cutting slows noticeably or the backing shows wear—Cubitron II belts typically last twice as long as conventional ceramic belts.

Q: Is this belt safe for removing spot welds?
A: Yes. It’s engineered for spot-weld removal and rivet grinding, offering precise control and fast metal removal when used with proper PPE.