Depressed Center Radius Polishing Diamond Pad (DCRPD) is a high-performance diamond abrasive tool designed for precision grinding and polishing of marble, granite, tiles, and engineered stone surfaces. It features a depressed center structure that provides better stability, control, and safety during high-speed operations, especially on curved, angled, and hard-to-reach areas.Manufactured with industrial-grade diamond segments bonded in a durable matrix, the DCRPD ensures fast material removal, smooth surface leveling, and superior finishing quality. It is widely used in construction, stone fabrication, and surface restoration applications.This pad is suitable for both wet and dry use, with wet polishing preferred for enhanced cooling and longer tool life. It is commonly used in multi-stage polishing processes to achieve fine, glossy, and mirror-like finishes on stone surfaces.

Product Type

• Depressed Center Diamond Polishing Disc / Pad (Type 27 design)
• Radius / curved surface polishing tool for stone fabrication

 Application Materials

• Marble
• Granite
• Ceramic tiles
• Vitrified tiles
• Quartz / engineered stone
• Terrazzo
• Natural stone surfaces

 Construction / Material

• Industrial-grade synthetic diamond abrasives
• Resin bond or metal-resin hybrid matrix
• Fiberglass reinforced backing for strength and safety
• Flexible polishing layer for contour surfaces

Design Features

• Depressed center (Type 27) for better control and safety during grinding
• Radius-friendly structure for curved, beveled, and edge polishing
• Balanced body to reduce vibration during high-speed use
• High flexibility for detailed finishing work

 Size Range

• 4 inch (100 mm)
• 4.5 inch (115 mm)
• 5 inch (125 mm)
• 7 inch (180 mm)

 Grit Range

• 50 grit – Coarse grinding / stock removal
• 100 grit – Leveling
• 200 grit – Scratch removal
• 400 grit – Honing
• 800 grit – Semi-polish
• 1500 grit – Fine polish
• 3000 grit – Mirror finish

 Thickness

• Approx. 3 mm – 7 mm (depends on design & reinforcement layer)

 Operating Parameters

• Recommended RPM: 2,000 – 4,500 RPM
• Compatible with angle grinders and polishing machines
• Wet use preferred for cooling and longer life
• Dry use available in select variants

 Performance Features

• High cutting efficiency on stone surfaces
• Excellent control on curved and edge areas
• Low vibration due to depressed center design
• Smooth finishing from grinding to mirror polish
• Long service life with consistent diamond exposure

 Applications

• Edge polishing of marble slabs
• Sink cutouts and curved surface finishing
• Tile edge smoothing and restoration
• Stone countertop fabrication
• Decorative stone detailing work