3" x 21" 400 Grit Flexible Diamond Sanding Belt ¨C Efficient Polishing & Grinding for Hard Materials

Overview: The 3" x 21" 400 Grit Flexible Diamond Sanding Belt – Efficient Polishing & Grinding for Hard Materials is a premium flexible diamond sanding belt engineered for heavy-duty material removal, wet grinding, and fine polishing on glass, stone, granite, marble, technical ceramics, and hard metals. Featuring electroplated diamond particles securely bonded to a tough, tear-resistant flexible backing, it delivers cool, aggressive cutting and consistent scratch patterns.

Key Features

• Electroplated Diamond Matrix: Uniformly electroplated diamond crystals provide aggressive cutting speed and resist thermal loading.
• Flexible, Heavy-Duty Backing: Conforms smoothly to rubber contact wheels, slack-belt contouring, and flat platen grinding.
• Durable Precision Joint: Reinforced seamless splice joint ensures smooth, chatter-free rotation across grinder pulleys.

Applications

• Glass cold working, bottle neck grinding, edge beveling, and art glass finishing
• Lapidary gemstone cabbing, mineral specimen pre-polishing, and granite edge profiling
• Ceramic tile contouring, porcelain smoothing, and thermal spray coating finishing

Operating Guidelines

• Coolant: Always operate with continuous water lubrication to flush slurry, prevent thermal loading, and extend belt lifespan.
• Tension: Maintain proper belt tension without over-stretching the splice.
• Recommended Speed: 2,000 to 4,500 SFPM (Surface Feet Per Minute) depending on machine configuration.