Think & Tinker, Ltd.
CNC router bits and carbide cutting tools with tutorials and technical guides
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ER11 Collets

  • Architecture: interleaved spring collet
  • Steel : SCM440
  • Hardness: HRC 46
  • Taper: 8┬░
  • Surface Roughness: Rz 2.5
  • Internal hole by boring machine.
  • Collet Tolerance Grades:(read the Collet Selection tutorial)
    • EP (extreme-precision grade) TIR < 0.0001in (0.0025mm), TIR @ 1.0in. < 0.0002in.
    • UP (ultra-precision grade) TIR < 0.0002in (0.005mm)
    • PG (precision grade) TIR < 0.0004in (0.01mm)
    • SG (standard grade) TIR < 0.0006in (0.015mm)
  • Clamping range ER11= 0.020" (0.5mm), ER16, 20, 32, 40 = 0.039" (1mm )
  • Compatible with DR, RD, ESX, AR, & BR Series Collets
ER-25 Ultra-precision collet

Get $5 off shipping on Web Orders over US$50!
Item # Description Unit Price Enter Qty.
ERPG-ER11-1250  1/8 in. (0.1250") clamping ER-11 precision-grade (PG) collet   $19.95 
ERPG-ER11-2500  1/4 in. (0.2500") clamping ER-11 precision-grade (PG) collet   $19.95 
Enter the desired quantity (Enter Qty) then click on the "Add to Cart" Button.



Open Monday - Friday, 08:30 to 16:30 Mountain Time.

Most orders received before noon ship within one business day,
subject to credit approval and item availability.
Orders with different billing and shipping
addresses may be delayed for address verification.