收藏: Expandable Drum Wheels

Our Expandable Rubber Drum Wheels are high-performance lapidary drum wheels with a resilient rubber surface that flexes to match stone contours for consistent belt contact during grinding. The angled expansion slots allow quick, tool-free belt changes between grits — simply deflate, swap the belt, and re-expand. Factory-balanced for true-running accuracy with no wobble, and built with a harder-durometer rubber rim that minimizes cupping for longer belt and drum life. Available in three sizes to match standard lapidary sanding belt dimensions.

🔥 Shop Expandable Drum Wheels – From $48.00

Available Sizes & Pricing

Key Features

• Resilient rubber surface — Flexes to match stone contours for consistent belt contact
• Angled expansion slots — Quick tool-free belt changes between grits
• True-running accuracy — Factory-balanced for smooth, wobble-free operation
• Harder-durometer rubber rim — Minimizes cupping for longer drum and belt life
• Compatible with all standard lapidary sanding belts

Compatible Applications

• Cabochon shaping and dome profiling on lapidary bench grinder machines
• Stone slab edge grinding and surface preparation
• Agate, jasper, quartz, obsidian, and hard lapidary stone grinding
• Glass edge grinding and surface shaping
• Multi-grit progressive grinding sequences from coarse to fine
• Fits standard lapidary cabbing machines with 5/8", 3/4", and 1" arbor spindles

Compatible Belts

• Diamond Resin Sanding Belts — Long-life resin diamond belts, grit 60–50000
• Abrasive Expanding Belts — Silicon carbide belts, grit 60–1000, 10-piece sets
• Flexible Diamond Sanding Belts — Industrial flexible diamond belts

Related Tools

• Reducing Bushings — Arbor adapters for correct drum wheel spindle fit
• Bench Wheel Spacers — Spacers for correct wheel positioning on the arbor

Frequently Asked Questions

• Q: How do I change belts on an expanding drum wheel?
  A: Deflate or release the drum expansion mechanism, slide the old belt off, slide the new belt on and center it, then re-expand the drum to grip the belt firmly. The angled expansion slots lock the belt in place during grinding without tools.
• Q: What size drum wheel do I need?
  A: Match the drum size to your sanding belt dimensions. The 6x1.5" drum uses 6x1.5" belts, the 6x2.5" uses 6x2.5" belts, and the 8x3" uses 8x3" belts. Always verify your machine’s drum spindle size and maximum drum diameter before ordering.
• Q: Should expanding drum wheels be used wet or dry?
  A: Wet use is recommended for lapidary stone grinding. Run water over the belt and drum during grinding to cool the abrasive and suppress stone dust.