14pcs ER20 1/8-1/2 Inch Spring Collet with ER20A-14mm Collet Chuck Holder Motor Shaft Tool Holder Extension Rod

Description 14pcs ER20 Collet with ER20A 14mm Collet Chuck Holder Motor Shaft Tool Holder Extension RodSpecification Holder Model ER20AMotor shaft Diameter 14mmTotal length 50mmClamping range 1 13mmCollet Model ER20Collet Material Spring SteelPrecision 0 015Collet Gripping Range 1 8 9 64 11 64 5 32 3 16 7 32 15 65 9 32 5 16 11 32 3 8 13 32 7 16 1 2 Upper Diameter 28 mmBottom Diameter 25 mmHeight 34 mmT I R 0 0003 or 5um Features 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 unbalance and increase the stability of the cutting Suitable For Boring milling drilling tapping engraving CNC spindle machines and other processing Ground roughness is Ra0 4 Microns plus overall fine polish Package Included 1 x ER20A 14mm Collect Holder14pcs x ColletMore Details