18mm Bore to 20mm Step Arbor Reducer Flange – Precision 1.5mm Adapter for Grinding & Saw Blade Mounting

A precision-machined arbor reducer flange that adapts an 18mm bore wheel or blade to a 20mm step diameter spindle. With a 1.5mm step height and 4–5mm total adapter thickness, this low-profile flange provides a stable, centered clamping surface for setups requiring minimal axial offset. 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 18mm bore wheels to 20mm 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 20mm spindle and 18mm bore blades