Collection: Bench Wheel Spacers

Professional bench grinder spacer adapter sets and reducing bushing sets for accurate alignment and secure installation of diamond grinding wheels, lapidary wheels, and abrasive wheels on bench grinders and lapidary machines. Available in stainless steel (9-piece, $45) and aluminium (7-piece, $45) sets, plus a 6-piece reducing bushing set ($28) and expandable drum arbor adapters ($5). Ensures vibration-free wheel operation and correct wheel positioning on standard lapidary bench grinders.

🔥 Shop Bench Wheel Spacers – From $5.00

Available Sizes & Pricing

Material Comparison Guide

Compatible Applications

• Precise wheel positioning and alignment on lapidary bench grinders
• Bore size conversion for grinding wheels with non-standard bore diameters
• Vibration-free wheel mounting on standard 5/8", 3/4", and 1" arbors
• Expandable drum wheel bore conversion for non-standard spindle sizes
• Compatible with diamond resin wheels, sintered wheels, flat hard wheels, and abrasive wheels

Related Tools

• Diamond Flat Hard Wheels — Rigid flat grinding wheels requiring precise arbor alignment
• Diamond Resin Soft Grinding Wheels — Flexible resin wheels for cabochon shaping
• Sintered Diamond Grinding Wheels — Heavy-duty metal bond wheels for hard stone
• Expandable Drum Wheels — Rubber expanding drums requiring arbor adapters
• Machine Accessories — Full range of lapidary machine accessories and adapters

Frequently Asked Questions

• Q: What are bench wheel spacers used for?
  A: Bench wheel spacers are precision-machined adapters that fit between the grinding wheel bore and the machine spindle arbor. They serve two purposes: (1) bore size conversion — allowing wheels with larger bore diameters to fit smaller spindle arbors, and (2) wheel positioning — spacing the wheel to the correct lateral position on the spindle for proper alignment with the machine's water tray and tool rest.
• Q: What is the difference between the stainless steel and aluminium spacer sets?
  A: The stainless steel 9-piece set is more durable and corrosion-resistant — ideal for wet grinding environments where water cooling is used continuously. The aluminium 7-piece set is lighter and suitable for dry grinding applications or occasional wet use. Both sets cover the standard spacer sizes needed for most lapidary bench grinder configurations and are priced the same at $45.
• Q: Do I need the reducing bushing set or the spacer adapter set?
  A: The reducing bushing set (6pcs, $28) is specifically for bore size conversion — fitting wheels with larger bore diameters onto smaller spindle arbors. The spacer adapter sets (7–9pcs, $45) include both bore reducers and lateral positioning spacers for complete wheel setup. If you only need bore conversion, the bushing set is sufficient; if you need full wheel positioning control, choose the spacer adapter set.
• Q: Are these spacers compatible with all lapidary bench grinders?
  A: The spacer sets cover the most common lapidary bench grinder spindle sizes (5/8", 3/4", 1"). They are compatible with standard lapidary bench grinders, cabbing machines, and combination grinder-polishers. Check your machine's spindle diameter and the wheel's bore diameter before selecting the appropriate spacer size.