ER Collets
ER COLLETS

Collet

Type

Bore Range-d Clamping Per Collet Collapse Per Collet D L
From To In Steps From To
ER8 0.5 5 0.5 0.5 5 0.5 8.5 13.5
ER11 0.5 7 0.5 0.5 7 0.5 11.5 18
ER16 0.5 10 1 0.5 10 1 17 27
ER20 1 13 1 1 13 1 21 31
ER25 1 16 1 1 16 1 26 35
ER32 2 20 1 2 20 1 33 40
ER40 3 26 1 3 26 1 41 46
ER50 10 34 2 10 34 2 52 60
        ER COLLET CONCENTRICITY - AS PER DIN 6499 :: 
Metric
Clamping Range d L Maximum T.I.R
Min Max Low High Precision DIN 6499
1 1.6 6 0.015 0.008
1.6 3 10
3 6 16
6 10 25
10 18 40 0.02 0.01
18 26 50
26 34 60 0.025