Reducer ring Makita A-85248, 22.23 → 20 mm adapter for power tools

Reducer ring Makita A-85248 adapts a 22.23 mm arbor/interface to a 20 mm shaft, allowing mounting of accessories with a smaller bore on compatible Makita power tools. The adapter provides a precise fit between discs, brushes and other attachments and the tool spindle without altering the tool itself. It is intended for situations where accessories with a 20 mm inner diameter must be used on machines with a 22.23 mm arbor.

Advantages

The reducer ring offers a secure mechanical connection and accurate centring to minimise vibration during operation. Manufactured to fit common Makita tool interfaces, it enables fast attachment changes and maintains accessory alignment for consistent performance. The adapter is compact and lightweight, preserving the tool balance and allowing use in confined workspaces.

Suitable for

• Adapting sanding discs with 20 mm bore to tools with 22.23 mm arbor
• Mounting wire brushes or polishing pads with 20 mm inner diameter
• Workshop and professional repair tasks requiring accessory interchangeability
• Situations where tool modification is not permitted or preferred

Key specifications

• Input arbor diameter: 22.23 mm
• Output shaft/inner bore: 20 mm
• Material: durable metal alloy suitable for rotating tool applications
• Finish: machined surface for tight fit and reduced play
• Compatibility: designed to interface with standard 22.23 mm power tool spindles and 20 mm accessories

How to use

Ensure the tool is powered off and disconnected from the power source before fitting the reducer ring. Slide the adapter onto the tool arbor until it seats firmly, then mount the accessory with a 20 mm bore onto the adapter and secure according to the accessory and tool manufacturer’s fastening instructions. Check that the assembly is centred and free of wobble before re‑powering the tool and beginning work.

Usage recommendations

Regularly inspect the reducer ring for signs of wear, deformation or surface damage and replace if any compromise in fit or concentricity is detected. Use accessories rated for the tool’s maximum speed and follow safety guidelines for personal protective equipment and operating procedures.