High Precision ER Spring Collets Chucks for CNC Router Spindles

High Precision ER Spring Collets Chucks for CNC Router Spindles Model: ER11 ER16 ER20 ER25 ER32 ER40 collets This ER spring collets are used with CNC router machines, hold the cutter bits into the spindle. High precision CNC ER collet system allows to reduce the vibrations on the tools and motors, assure better results and prolong the life of the cutter bits and spindle. ER Collet Chuck Features: Material: 65Mn Steel Hardness: HRC44-48 Standard: DIN6499B Precision: 0.005mm 0.008mm ER collet nut and Electrospindle should be accordant. ER collet and ER collet nut should be accordant. Cutter bits SHK diameter and ER collet clamping diameter should be accordant.