DIN69871.A40 and DIN69871.A50 - JM71 Milling Chuck Arbor. Can be dynamic balanced up to 8000rpm, 20000rpm and 25000rpm. DIN69871.A40 and DIN69871.A50 - JM71 Milling Chuck Arbor.Can be dynamic balanced up to 8000rpm, 20000rpm and 25000rpm. Order No.TaperL1dDD1434-0700DIN69871.A40×JM711290mm16mm50mm44.45mm434-0701DIN69871.A40×JM7116100mm22mm56mm44.45mm434-0702DIN69871.A40×JM7116120mm22mm56mm44. ...