6" x 1-1/2" Expandable Rubber Drum Wheel for Diamond Resin Abrasive Sleeves

The 6" x 1-1/2" Expandable Rubber Drum Wheel is an essential, high-performance lapidary and glass grinding accessory designed to support diamond resin belts, silicon carbide sanding sleeves, and polishing bands without messy adhesives or mechanical clamps. Utilizing centrifugal expansion during machine rotation, the precision-slotted resilient rubber rim expands outward, locking abrasive belts firmly and evenly in place for smooth, chatter-free cabochon shaping and contour finishing.

Key Features

• Centrifugal Self-Locking Design: Precision diagonal expansion slots automatically expand under rotational speed, locking sanding sleeves securely with zero slippage or adhesives.
• Quick & Effortless Belt Changes: When the machine stops, the rubber relaxes back to its resting diameter, allowing fast sleeve changes in seconds.
• Smooth Resilient Rubber Cushioning: Provides gentle, consistent contact pressure that absorbs hand vibrations, contours around cabochon domes, and eliminates flat spots.
• Precision-Balanced Composite/Metal Core: Engineered to run true at operating speeds, protecting machine bearings and reducing operator fatigue.
• Standard 1" Arbor with Reducer Bushings: Includes precision reducer bushings to fit 3/4", 5/8", and 1/2" shafts on standard lapidary cabbing machines and arbors.

Applications

• Lapidary Cabochon Shaping & Smoothing: Backing flexible diamond and silicon carbide belts for agate, jasper, quartz, jade, and opal cabbing.
• Glass Cold Working & Edge Polishing: Edge grinding, smoothing glass curves, and bevel pre-polishing in glass art studios.
• Woodworking & Metal Deburring: Contour sanding of curved woodwork, knife handles, and non-ferrous metal parts.

Technical Specifications

• Diameter: 6 inches (152 mm)
• Width: 1-1/2 inches (38 mm)
• Belt Compatibility: Standard 6" x 1-1/2" (circumference ~18.85" / 479 mm) flexible sanding sleeves and belts
• Arbor Size: 1 inch (includes 3/4", 5/8", 1/2" reducer bushings)
• Material: High-Grade Oil & Water Resistant Resilient Rubber with Balanced Core
• Recommended Operating Speed: 1400–1800 RPM

Operating Guidelines

• Never run the drum at speed without an abrasive belt installed, as centrifugal force without a sleeve can over-expand the rubber rim.
• Ensure the inside of the abrasive sleeve and the rubber drum surface are clean and free of rock sludge or grit before mounting.
• Operate with appropriate water coolant when working with lapidary stone and glass materials.