15pcs ER11 1-7mm Spring Chuck Collet with ER11A 5mm Extension Rod Holder for CNC Milling Lathe Tool

Description:15pcs ER11 1-7mm Spring Chuck Collet with ER11A 5mm Extension Rod Holder for CNC Milling Lathe ToolSpecification:Material steelTypeER11AHeight38mm (when the lock nut)Shaft hole5mm (+0.02 mm)ModelER11Precision0.012MaterialSpring SteelGripping Range1 mm, 1.5 mm, 2 mm, 2.5 mm,3 mm,3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm,6 mm, 6.5 mm, 7 mm, 1/4, 1/8Upper Diameter12mmBottom Diameter8mmHeight20mmQuantity15pcsFeatures:ER straight rod type collet extension handle, the handle body is relatively long, suitable for deep hole processing.Can reduce the use of tools, reduce costs, improve efficiency.The outer diameter of the rod and other parts of the rod can be eliminated by precision grinding, which can eliminate the unbalanceand increase the stability of the cutting.Ground Roughness is Ra0.4 Microns, plus overall fine polishSuitable For: Boring, milling, drilling, tapping, engraving, CNC, spindle machines, and other processingT.I.R.: 0.0003 or 5um.Durable and practical.Special angled slots increase rigidity.Protects tool holder from contaminants.Better overall balance of tool holder assembly.Use with any standard ER collet chucks for coolant-thru tool applications.Package Included:1 x ER11A 5mm Extension Rod15 x ER11 ColletsMore Details: