10mm Bore to 30mm Step Arbor Reducer Flange – Precision 3.5mm Adapter for Grinding & Saw Blade Mounting

A precision-machined arbor reducer flange that adapts a 10mm bore wheel or blade to a 32mm step diameter spindle. With a 3.5mm step height and 4–5mm total adapter thickness, this flange provides a stable, centered clamping surface that eliminates wobble and runout during grinding or cutting. Designed for bench grinders, lapidary machines, and diamond saw setups where bore-to-spindle mismatches require a reliable, vibration-free solution.

Specifications

Compatible Applications

• Grinding wheels — adapt 10mm bore wheels to 32mm spindle diameter on bench grinders
• Diamond saw blades — secure blade mounting where bore and spindle sizes differ
• Lapidary machines — compatible with standard lapidary bench grinders and combination machines
• Polishing and buffing setups — centered flange support for smooth, vibration-free operation
• Workshop saws — trim saws and slab saws with 32mm spindle and 10mm bore blades

Related Tools

• Machine Accessories — Full range of arbor flanges, adapters, backing plates, and spacers
• Saw Blade Arbor Adapters — Bore conversion adapters for trim saws and slab saws
• Bench Wheel Spacers — Stainless steel and aluminium spacer sets for wheel alignment
• Diamond Grinding Wheels — Full range of diamond wheels for lapidary bench grinders
• Diamond Saw Blades — Precision diamond blades for lapidary and stone cutting

Frequently Asked Questions

• Q: What does an arbor reducer flange do?
  A: An arbor reducer flange fills the gap between a wheel or blade bore and the machine spindle diameter. This flange adapts a 10mm bore wheel to a 32mm spindle, ensuring the wheel is centered and clamped securely with no wobble or runout. The 3.5mm step height and 4–5mm total thickness provide correct axial positioning for most standard bench grinder and saw setups.
• Q: Is this flange compatible with my bench grinder or saw?
  A: This flange is designed for machines with a 32mm spindle diameter where the wheel or blade has a 10mm bore. Verify both your machine spindle OD and your wheel/blade bore before ordering. For other size combinations, see our full range of arbor reducer flanges.
• Q: What is the difference between 1.5mm and 3.5mm step height?
  A: The step height determines how deep the flange seats into the wheel bore. A 3.5mm step provides a deeper, more secure engagement — suited for setups where additional axial stability is needed. A 1.5mm step is used where minimal offset is required. Choose based on your wheel bore depth and machine guard clearance.
• Q: Is this listing for a single flange or a set?
  A: This listing is for a single arbor reducer flange. If your setup requires flanges on both sides of the wheel, order two units.