5pcs ER11 1/8 Inch Spring Collet for CNC Milling Lathe Tool

Description 5pcs ER11 1 8 Inch Spring Collet for CNC Milling Lathe Tool Specification Model ER11Precision 0 015Material Spring SteelGripping Range 1 8 Upper Diameter 12 mmBottom Diameter 8 mmHeight 18 mmGround roughness is Ra0 4 Microns plus overall fine polishSuitable For Boring milling drilling tapping engraving CNC spindle machines and other processing T I R 0 0003 or 5um In order to make all collets running true on your side make sure your machine spindle and chuck holder running true on my side I ll make sure all those collets running in tenth Features 1 Durable and practical 2 Special angled slots increase rigidity 3 Protects tool holder from contaminants 4 Better overall balance of tool holder assembly 5 Use with any standard ER collet chucks for coolant thru tool applications Package Included 5pcs x ER11 1 8 Collet Note Manual measuring please allow 1 3 mm error thank you More Details