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ER Clamping Spring Sealed Collet for BT ER Collet Chuck

1. Made of special elastic steel material 
2. Power clamping ability,precise accuracy 
3. Used for boring,milling,drilling,tappping,grinding and engraving operation etc.
Availability:
Quantity:
  • ER

  • JC

ER Clamping Spring Sealed Collet for BT ER Collet Chuck

ER COLLET

Model d H7 D D1 D2 L L1 L2 L3 Collapsible Capacity
ER8 ≧1.0-5.0 8 8.45 6.5 13.5 2.98 1.5 1.2 0.5
ER11 ≧1.0-7.0 11 11.5 9.5 18.0 3.8 2.5 2.0 0.5
ER16
≧1.0-2.5 16 17 13.8 27.5 6.26 4.0 2.7 0.5
>2.5-10.0 16 17 13.8 27.5 6.26 4.0 2.7 1.0
ER20 ≧1.0-2.5 20 21 17.4

31.5

6.36 4.8 2.8 0.5
>2.5-10.0 20 21 17.4 31.5 6.36 4.8 2.8 1.0
ER25 ≧1.0-2.5 25 26 22.0 34.0 6.66 5.0 3.1 0.5
≧2.50-16.0 25 26 22.0 34.0 6.66 5.0 3.1 1.0
ER32 ≧2.0-2.5 32 33 29.2 40.0 7.16 5.5 3.6

0.5

>2.5-20.0 32 33 29.2 40.0 7.16 5.5 3.6 1.0
ER40 ≧3.0-26.0 40 41 36.2 46.0 7.66 7.0 4.1 1.0
ER50 ≧6.0-10.0 50 52 46.0 60.0 12.6 8.5 5.5 1.0
>10.0-34.0 50 52 46.0 60.0 12.6 8.5 5.5 2.0

Inspection of Accuracy

ER COLLET 1

D L Run Out Tolerance
A B C I II
1.0-1.6 6 0.005
0.008 0.010 0.010 0.015
>1.6-3.0 10
>3.0-6.0 16
>6.0-10.0 25
>10.0-18.0 40 0.015 0.020
>18.0-26.0 50
>26.0-30.0 60
>30.0-34.0 80 0.020 0.030


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