DIN69871 SK ER Collet Chuck

DIN69871 SK ER Collet Chuck,

• Form AD or AD/B

• Balanced G6.3 15000rpm or G2.5 25000rpm 

• Hardness HRC52-58

• Material :40Cr 

• Taper tolerance :＜AT3

• Taper SK30,SK40,SK50