03J7541 - Rikon 71-121 Chuck Insert, 1" × 8 tpi UNC RH
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These interchangeable steel inserts adapt the insert-type Z3 and Z4 chucks to a range of standard lathe spindle threads. Each has the same external thread to fit the rear socket of the chuck, with an internal thread or bore selected to match the lathe spindle.
The system allows the same chuck to be moved between lathes with different spindle sizes simply by using the appropriate insert.
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Rikon Chuck Inserts
These interchangeable steel inserts adapt the insert-type Z3 and Z4 chucks to a range of standard lathe spindle threads. Each has the same external thread to fit the rear socket of the chuck, with an internal thread or bore selected to match the lathe spindle.
The system allows the same chuck to be moved between lathes with different spindle sizes simply by using the appropriate insert.
