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HomeProductInternal cold ER collet
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  • 1741332228439270.png
  • 1741332228149651.png
  • Custom internal cold ER collet.png
  • 1741332227583726.png
  • 1741332227916183.png
  • 1741332228439270.png
  • 1741332228149651.png
  • Custom internal cold ER collet.png

Internal cold ER collet

Custom Internal Coolant ER Collet is designed for high-precision CNC machining requiring effective cooling and stable tool clamping. Its internal coolant-through design delivers coolant directly to the cutting edge, improving heat control, chip evacuation, and machining stability during high-speed operations.Made from heat-treated spring steel, it offers strong elasticity, low runout, and reliable clamping force. Compatible with standard ER systems, it supports customization in size, coolant holes, and tolerance grades.Ideal for precision milling, drilling, and tapping in demanding applications.
Product Details
Parameter
Model D D1 L L1 L2 AA UP
ER08 8.5 6.5 13.5 1.5 1.2 0.008mm 0.005mm
ER11 11.5 9.5 18 2.5 2 0.008mm 0.005mm
ER16 17 12.8 27.5 4 2.7 0.008mm 0.005mm
ER20 21 17.4 31.5 4.8 2.8 0.008mm 0.005mm
ER25 26 22 34 5 3.1 0.008mm 0.005mm
ER32 33 29.2 40 5.5 3.6 0.008mm 0.005mm
ER40 41 36.2 46 7 4.1 0.008mm 0.005mm