BT ER Spring Collet Chuck 

1. The toolholder is once clamped, high concentricity, relatively high strength after hot processing and high temperature treatment, with certain flexibility and plasticity.
2. High precision grinding of the inner hole, overall finishing, suitable for high precision machine tool processing requirements, runout accuracy <0.003.
3. The threads of the products all meet the requirements of the national standards, and the threads are neat and clean, without missing teeth or burrs, and are produced by the molding technology.