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The 3M 7100008859 is a tapered spindle mount adapter designed to secure 2 to 3 inch fine bristle discs onto standard tapered spindle bench motors. This small hardware component bridges the gap between the bench motor spindle and the disc mount interface, allowing consistent disc seating and reducing the chance of slippage during operation. It is sold as an individual unit and is typically installed by maintenance technicians, metalworkers, or surface finishing professionals who use bench-mounted abrasive tools in production or fabrication environments.
This adapter is suited for use with fine bristle disc accessories in light deburring, surface blending, and finishing applications on bench motor setups. It is appropriate for both light industrial and workshop environments where standardized spindle tooling is used. Because it is configured specifically for tapered spindle mounts, it provides a consistent fit across bench motors that use this common spindle interface.
Designed for use with 2 to 3 inch fine bristle discs mounted on standard tapered spindle bench motors. Intended as a mounting interface accessory for compatible 3M bristle disc systems.
Installation is performed by maintenance or tooling technicians. Power down and disconnect the bench motor from its electrical source before mounting or removing the adapter. Ensure the spindle taper is clean and free of debris before seating the adapter to achieve proper fit. Follow the motor and accessory manufacturer guidelines for secure disc mounting torque and operating speed limits.
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