This adapter mounts to a 6″ 3-jaw or 4-jaw lathe chucks with a 3-bolt pattern or 4-bolt pattern and 142mm bolt circle. The adapter has no spindle side registration recess and is designed specifically for the HiTorque 9×20 lathe spindle. It has a 52mm center hole.
* NOTE: Also includes (3) Studs for 9x 20 chuck adapter (6739) required for mounting on to lathe spindle flange.

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