Introduction：ZHENGZHOU MACHINERY CO., LTD FOUNDED IN 1958. We mainly produce various of spring chuck, milling chuck, drill chuck, center, sleeve, dividing head, boring head, rotary worktable, quick change tool post, precision vise, sharpenning machine all sorts of measuring tools.
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SupplyMade of high quality steel, carburized to surface hardness HRC58~62.Parallelism 0.005mm/100mm, squareness 0.005mm. Locate position by pilot pin, adjust pin on body according to opening size, then clmp
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