Products for bench top machinists | LittleMachineShop.com

Collets, ER-25 Individual Sizes

Collets, ER-25 Individual Sizes - Main image
$9.19 $12.95 In stock

ER-25 collets have a major diameter of 1.02" (26 mm) and a length of 1.34" (34 mm). They have a clamping range of 1/16" to 5/8" (1.0 mm to 16.0 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 (5.0 / 5 · 5 reviews)

Kevin H. ★★★★★

Cutting threads in 6061 aluminum, these collets hold the end mill tighter than my old set, and the 1.02" diameter fits perfectly in my mill's nut.

Kevin N. ★★★★★

The clamping range is impressively wide for such a compact collet, and the high grade tool steel feels solid in hand. Definitely tightens down securely on my bits without any wobble.

Olivia E. ★★★★★

Picked up a set of these ER-25 collets for my mill, and the 1.02" major diameter fits my spindle nut perfectly. The high grade tool steel feels solid and they hold the 1/4" end mill without any runout that I can detect.