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The 3M 7010308618 is a replacement extension shaft designed for use with the 3M 28770 1 HP Extended Die Grinder. This component restores original functionality to the tool by replacing a worn or damaged shaft, allowing the grinder to operate at its intended reach and performance. Installation is typically performed by maintenance technicians, tool repair specialists, or trade professionals who service pneumatic and electric grinding equipment. The part is sold individually and is sourced as a direct replacement to maintain tool integrity and safe operation.
This extension shaft is intended for use in industrial, mechanical, and trade shop environments where die grinders are used for grinding, deburring, porting, and surface finishing tasks. It is specifically matched to the 3M 28770 Extended Die Grinder platform, making it a targeted replacement for that tool family rather than a universal fit.
Compatible with the 3M 28770 1 HP Extended Die Grinder. Also referenced under part number 28788.
Installation should be performed by a qualified technician familiar with pneumatic or electric rotary tool service. Disconnect the tool from its air supply or power source completely before beginning any disassembly. Use manufacturer-recommended tools for shaft removal and installation to avoid damaging the collet, spindle, or housing. Follow applicable OSHA hand and power tool safety guidelines during service.
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