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