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ER20 Collet Ultra High Precision 0.005mm 5u

$14.95
(6 reviews) Write a Review
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ER Collet Ultra High Precision 0.005mm / 5u run-out. These are not your blue/yellow boxed collets that are the cheapest of cheapest of collets that do not specify a precision value. A high precision collet allows for quieter machining, longer tool life and greater cut accuracy.

Available in ER11, ER16, ER20 and ER25 in common sizes 3.175mm (1/8"), 4mm, 6mm, 6.35mm (1/4"), 8mm, 10mm and 12.7mm (appropriate to ER size). Clamping range is that of nominal inner diameter size -1mm (eg. 6mm would accept 5mm to 6mm). 

How to check what diameter you have

ER Collet Outline

ER ColletLengthDiameterRange
ER-11 18 mm 11.5 mm 0.5—7 mm
ER-16 27.5 mm 17 mm 0.5—9 mm
ER-20 31.5 mm 21 mm 1—13 mm
ER-25 34 mm 26 mm 1—16 mm
ER-32 40 mm 33 mm 1—21 mm
ER-40 46 mm 41 mm 3—26 mm

6 Reviews Hide Reviews Show Reviews

  • 5
    ER20 Collet

    Posted by Warwick Buddle on 26th Jul 2023

    Item as described, fast post - recommended

  • 5
    Adams Bits are the best

    Posted by Malcolm George on 26th Jun 2023

    Once again, a great product without a heavy price.

  • 5
    ER 20 Collet Ultra High Precision

    Posted by Gus Meredith on 10th May 2023

    I bought the 6mm set and they seem to be working fine, no issues found so far.

  • 5
    ER20 Collets

    Posted by Chris on 1st Jul 2022

    Excellent quality, run much smoother and quieter than the ones we had. Has a smoother and better clamping power.

  • 5
    ER20 Collet's

    Posted by Chris on 20th Jun 2022

    Excellent quality, tooling bits fit so much better and clamping is more even. Great purchase.

  • 5
    WR20 collets

    Posted by Hamish Allan on 1st Sep 2021

    Super fast delivery I am super impressed. Product looks great.