ER collet chuck
1, Material: 40Cr, 20CrMnTi
2. TIR within 0.005mm
3, Hardness: 52-56HRC
4, Surface: shining, sand blasting, chrome plasted
5, balancing: G6.3/12000rpm, G2.5/25000rpm
6, water coolant: AD, AD+B, B type
7, pacakge: paper box, plastic tube, carton. wooden case
ER Collet chuck






