Power Milling Chuck

The standard milling chuck has the sapcing between chuck body and transfer screw cap.It easily makes walter with dust and cutting scraping into the spacing, and it also will be move to take the dust and cutting scrap together running,it not only fret the surface of chuck body and tranfer screw cap, but also break the needle roller bearing. The holding precision will be falling, at last it lose holding capacity. So we suggest you buy such new milling chuck to instead of old one. 1.carburization heat treatment, surface HRC52, inside HRC36,high quality machine holder 2.high anti-knock, long useful life 3.nickel treatment and black coating for choose