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Collet Set, ER-20, Set of 3

Collet Set, ER-20, Set of 3 - Main image
$26.21 $34.95 In stock

Set of three ER-20 collets sizes 1/8", 3/16" and 1/4".
This set of ER-20 collets provides the basics you need for the Tormach Tooling System ER-20 collet holder.
ER-20 collets have a major diameter of 0.83" (21 mm) and a length of 1.24" (31.5 mm). The collets in this set have a clamping range of 0.12" - 0.393" (3.0 mm - 10 mm).
ER collets are made from high grade tool steel, hardened and ground to close tolerance. Kerf cuts allow the collet to expand and contract as needed within the specific clamping range to securely hold the tool or workpiece.
*Collet must be assembled into a collet chuck nut before inserting into the collet chuck.

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Customer Reviews (4.4 / 5 · 5 reviews)

Sebastian ★★★★★

The 1/4" collet seats my end mills dead-nut true in the holder—no runout I can measure. Sizes cover the bits I actually use, so this trio's been worth every penny.

Olivia W. ★★★★★

Swapped these into my ER-20 holder and the 3/16" collet holds exactly as snug as the 1/4". Good thing they're machined cleanly without any burrs.

Sebastian ★★★★☆

The 1/8" collet grips my smaller bits perfectly, though I wish the set included a 1/2" option for versatility. Runs true in the holder with no noticeable runout for my light milling jobs.