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Products > Collets and Chucks > ER Collets      

Collets, ER-11 Individual Sizes

Collets, ER-11 Individual Sizes  

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ER-11 Collet Chucks
ER-11 Collet Chucks

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  • Hardened and ground to close tolerance
  • Made of high grade tool steel
  • Major diameter 0.45" (11.5 mm)
  • Length 0.71" (18.0 mm)
  • Range of ER-11 collets 1/32" to 1/4" (0.5 mm to 7.0 mm)
P/N Description Price
4797 Collet, ER-11, 1/32" $12.49 Qty. 
4601 Collet, ER-11, 1/16" $12.49 Qty. 
4398 Collet, ER-11, 3/32" $12.49 Qty. 
4454 Collet, ER-11, 1/8" $12.49 Qty. 
4455 Collet, ER-11, 3/16" $12.49 Qty. 
4399 Collet, ER-11, 7/32" $12.49 Qty. 
4456 Collet, ER-11, 1/4" $12.49 Qty. 


ER-11 collets have a major diameter of 0.45" (11.5 mm) and a length of 0.71" (18 mm). They have a clamping range of 1/32" to 1/4" (0.5 mm to 7.0 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.

Chris' Tips

Chris Chris' Tips
This shows the sizes of all the ER collets we carry.

With all ER collet chucks, the collet must be snapped into the nut before placing it into the chuck. There is an eccentric ring inside the nut that engages the groove in the collet. That is what makes them self-ejecting. Tilt the collet again to remove it from the nut.


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