20mm to 1/2" (12.7mm) Saw Blade Arbor Adapter 5pcs Set for Lapidary, Glass & Tile Saws

The 20mm to 1/2" (12.7mm) Saw Blade Arbor Adapter 5pcs Set is an ultra-precise reducing bushing kit engineered to adapt diamond saw blades and cutting discs with a 20mm bore onto lapidary trim saws and power tools equipped with a 1/2" (12.7mm) arbor shaft.

Key Features

• Precision Tolerance Fit: Accurately bridges 20mm inner diameter blades down to standard 1/2" (12.7mm) motor shafts, preventing blade wobble, vibration, and arbor runout.
• Heavy-Duty Precision Machining: Machined from durable wear-resistant metal alloy to maintain strict concentricity under wet cutting friction and high rotational speeds.
• 5-Piece Value Multi-Pack: Provides 5 matching reducer bushings, perfect for mounting multiple diamond blades or keeping reliable backups in the workshop.
• Clean & Accurate Kerf: Eliminates arbor slippage for smooth, chip-free cuts across agate, jasper, jade, glass slabs, and porcelain tile.

Recommended Applications

• Mounting 20mm arbor diamond trim saw and lapidary slabbing blades onto 1/2" shaft grinding arbors or tile saws.
• Adapting circular masonry, ceramic, and gemstone cutting wheels to bench motors with a 1/2" arbor spindle.

Technical Specifications

Installation & Operating Guidelines

• Clean both the blade core arbor opening and motor spindle prior to mounting.
• Press the adapter bushing squarely into the 20mm blade hole until flush on both sides.
• Mount the blade and adapter onto the 1/2" shaft, position outer stabilizing flanges, and tighten the arbor nut securely.
• Always operate lapidary sawing machinery with adequate coolant and eye protection.