520mmx20mm Multi-Grit Flexible Diamond Sanding Belt ¨C Efficient Polishing & Grinding for Hard Materials

Overview: The 520mm x 20mm Flexible Diamond Sanding Belt (approx. 20-1/2" length x 3/4" width) is a high-performance portable abrasive belt designed for standard 520x20mm pneumatic finger sanders, electric contact-arm grinders, and detail deburring machines. Electroplated industrial diamond crystals bonded securely to a flexible, high-tensile waterproof backing provide aggressive stock removal, cool wet cutting, and exceptional durability in tight corners, narrow channels, and complex contours.

Key Features

• Full Range of Grits & Patterns: Available in Dot and Arrow patterns from coarse 60 Grit calibration down to 1800 Grit ultra-fine polishing.
• Standard 520mm x 20mm Fit: Tailored for pneumatic air belt sanders, electric file sanders, and handheld pipe polishers.
• Flexible & Tear-Resistant Backing: Bends effortlessly around small-radius contact arms and pulleys without delaminating or cracking.
• Smooth Low-Vibration Joint: Precision butt splice eliminates bouncing and chatter marks during high-RPM precision work.

Applications

• Glass cold-working, arrising cut edges, and bottle bevel leveling
• Lapidary gemstone rough grinding, cabochon smoothing, and intricate carving
• Ceramic edge smoothing, porcelain tile grooving, and composite contour shaping
• Thermal spray coatings, aerospace alloys, and weld seam deburring

Operating Guidelines

• Coolant: Use with continuous water mist or light coolant spray when feasible to prevent diamond thermal wear and clear fine swarf.
• Tension & Tracking: Adjust air tool tensioning arm to avoid over-stretching the narrow belt.
• Speed: Recommended surface speed 2,500 to 5,000 SFPM.