ER-A Type Extension Rod E8 ER11 ER16 ER20 Engraving Machine ER Straight Shank Extension Rod CNC Milling Machine Extension Tool Holder

XJL. Name: ER CNC straight shank extension bar. Material: 42CrMn. Model: A type. Size: e. g. C12-ER11A-150L C12 shank diameter-ER11 cartridge type/A-nut-150 length. ER extension rod centelthrough-hole design. No threads, conduciveto water dischargeCooling effectivelyreduce vibrationIncrease vibrationresistance. Advanced vacuum quenchingfurnace can achieve carbonand oxygen coextrusion toimprove the hardness ofthe tool bar and enhancethe life. The bar is long, usingdeep hole machiningwork, can reduce theuse of long tools usereducing costs andincreasing efficiency. type ER extension roda hexagonal nut, whenthe movable rench isclamped moreconvenient. Features: ER straight shank type extension collet bar, straight shankbar is longer and suitable for deep hole processinq. It can reduce theuse of The use of longer tools can reduce costs and improve efficiencyHigh riqidity and high holding force due to direct nut rotation