Star SB20/Citizen SCU Back-Clamp φ1–φ20 Alloy Hardened Back-Shaft Collet
Product Overview
This high-precision back-clamp collet (back-shaft collet) is engineered for Star SB20 and Citizen Swiss-type CNC lathes, delivering strong and stable clamping performance during sub-spindle (secondary) machining.
With a clamping range of φ1–φ20 mm, this SCU series collet ensures secure workpiece holding during part transfer and back-end operations, enabling high accuracy, repeatability, and productivity in automated Swiss-type machining environments.


