ER Collet System
ER Standard Grade Collets
ER Collet Styles:
ER – Standard Service Collet
- For use in ER collet chucks for drilling, reaming, boring, tapping, and milling.
- Meets DIN 6499-B industry standard.
- Collapse range .0393”(1 mm) maximum.
- Size 11 collapse range .020”(1/2 mm) maximum.
- For higher runout tolerance, refer to high precision collets on page 30.
RER – Sealed Collet
- For use with regular straight shank tools.
- Collet slots are sealed to prevent coolant escape.
- Withstands coolant pressure up to 600 PSI.
Range: Always select collet that the high end of range is the closest larger
or equal to cutting tool shank. Collets perform best when “on size”.
Standard Collet Series
| ER11 |
ER16 |
ER20 |
ER25 |
ER32 |
ER40 |
Inch |
Metric |
| Part No. |
Part No. |
Part No. |
Part No. |
Part No. |
Part No. |
Range |
Range |
| – |
ER16-0031 |
– |
– |
– |
– |
.0312 |
– |
| ER11-0039* |
ER16-0039 |
– |
ER25-0039 |
– |
– |
.0197-.0394 |
.5-1 |
| ER11-0059* |
– |
– |
– |
– |
– |
.0394-.0590 |
1-1.5 |
| – |
ER16-0062 |
ER20-0062 |
ER25-0062 |
– |
– |
.040-.062 |
– |
| ER11-0078* |
ER16-0078 |
ER20-0078 |
ER25-0078 |
– |
– |
.039-.0787 |
1-2 |
| – |
ER16-0093 |
ER20-0093 |
– |
ER32-0093 |
– |
.054-.093 |
– |
| ER11-0098* |
ER16-0098 |
– |
– |
– |
– |
.0590-.0984 |
1.5-2.5 |
| ER11-0118* |
ER16-0118 |
ER20-0118 |
ER25-0118 |
ER32-0118 |
– |
.0787-.1181 |
2-3 |
| – |
ER16-0125 |
ER20-0125 |
ER25-0125 |
ER32-0125 |
– |
.086-.125 |
– |
| ER11-0137* |
ER16-0137 |
– |
– |
– |
– |
.098-.1378 |
2.5-3.5 |
| – |
ER16-0156 |
ER20-0156 |
– |
ER32-0156 |
– |
.117-.156 |
– |
| ER11-0157* |
ER16-0157 |
ER20-0157 |
ER25-0157 |
ER32-0157 |
ER40-0157 |
.1181-.1575 |
3-4 |
| ER11-0177* |
ER16-0177 |
– |
– |
– |
– |
.1575-.1772 |
4-4.5 |
| – |
ER16-0187 |
ER20-0187 |
ER25-0187 |
ER32-0187 |
– |
.148-.187 |
– |
| ER11-0196* |
ER16-0196 |
ER20-0196 |
ER25-0196 |
ER32-0196 |
ER40-0196 |
.1575-.1969 |
4-5 |
| ER11-0216* |
ER16-0216 |
– |
– |
– |
– |
.177-.2165 |
4.5-5.5 |
| – |
ER16-0218 |
ER20-0218 |
– |
ER32-0218 |
– |
.179-.218 |
– |
| ER11-0236* |
ER16-0236 |
ER20-0236 |
ER25-0236 |
ER32-0236 |
ER40-0236 |
.1969-.2362 |
5-6 |
| – |
ER16-0250 |
ER20-0250 |
ER25-0250 |
ER32-0250 |
– |
.211-.250 |
– |
| ER11-0255* |
ER16-0255 |
– |
– |
– |
– |
.217- .2559 |
5.5-6.5 |
| ER11-0275* |
ER16-0275 |
ER20-0275 |
ER25-0275 |
ER32-0275 |
ER40-0275 |
.2362-.2756 |
6-7 |
| – |
ER16-0281 |
ER20-0281 |
– |
ER32-0281 |
– |
.242-.281 |
– |
| – |
ER16-0295 |
– |
– |
– |
– |
.256-.295 |
7-7.5 |
| – |
ER16-0312 |
ER20-0312 |
ER25-0312 |
ER32-0312 |
– |
.273-.312 |
– |
| – |
ER16-0315 |
ER20-0315 |
ER25-0315 |
ER32-0315 |
ER40-0315 |
.2756-.3150 |
7-8 |
| – |
ER16-0334 |
– |
– |
– |
– |
.296-.334 |
8-8.5 |
| – |
ER16-0343 |
ER20-0343 |
– |
ER32-0343 |
– |
.304-.343 |
– |
| – |
ER16-0354 |
ER20-0354 |
ER25-0354 |
ER32-0354 |
ER40-0354 |
.3150-.3543 |
8 – 9 |
| – |
ER16-0375 |
ER20-0375 |
ER25-0375 |
ER32-0375 |
ER40-0375 |
.336-.375 |
– |
| – |
ER16-0393 |
ER20-0393 |
ER25-0393 |
ER32-0393 |
ER40-0393 |
.3543-.3937 |
9-10 |
| – |
ER16-0406 |
ER20-0406 |
ER25-0406 |
ER32-0406 |
– |
.3666-.406 |
– |
| – |
– |
ER20-0433 |
ER25-0433 |
ER32-0433 |
ER40-0433 |
.3937-.4331 |
10-11 |
| – |
– |
ER20-0437 |
ER25-0437 |
ER32-0437 |
– |
.398-.437 |
– |
| – |
– |
– |
– |
ER32-0468 |
– |
.429-.468 |
– |
| – |
– |
ER20-0472 |
ER25-0472 |
ER32-0472 |
ER40-0472 |
.4331-.4724 |
11-12 |
| – |
– |
ER20-0500 |
ER25-0500 |
ER32-0500 |
ER40-0500 |
.461-.500 |
– |
| – |
– |
ER20-0511 |
ER25-0511 |
ER32-0511 |
ER40-0511 |
.4724-.5118 |
12-13 |
| – |
– |
– |
– |
ER32-0531 |
(light).– |
.492-.531 |
– |
| – |
– |
– |
ER25-0551 |
ER32-0551 |
ER40-0551 |
.5118-.5512 |
13-14 |
| – |
– |
– |
ER25-0562 |
ER32-0562 |
– |
.523-.562 |
– |
| – |
– |
– |
ER25-0590 |
ER32-0590 |
ER40-0590 |
.5512-.5906 |
14-15 |
| – |
– |
– |
ER25-0625 |
ER32-0625 |
ER40-0625 |
.586-.625 |
– |
| – |
– |
– |
ER25-0630 |
ER32-0630 |
ER40-0630 |
.5906-.6299 |
15-16 |
| – |
– |
– |
– |
ER32-0656 |
– |
.617-.656 |
– |
| – |
– |
– |
– |
ER32-0669 |
ER40-0669 |
.6299-.6693 |
16-17 |
| – |
– |
– |
– |
ER32-0687 |
– |
.648-.687 |
– |
| – |
– |
– |
– |
ER32-0708 |
ER40-0708 |
.6693-.7087 |
17-18 |
| – |
– |
– |
– |
ER32-0748 |
ER40-0748 |
.7087-.7480 |
18-19 |
| – |
– |
– |
– |
ER32-0750 |
ER40-0750 |
.711-.750 |
– |
| – |
– |
– |
– |
ER32-0787 |
ER40-0787 |
.7480-.7874 |
19-20 |
| – |
– |
– |
– |
– |
ER40-0826 |
.7874-.8268 |
20-21 |
| – |
– |
– |
– |
– |
ER40-0866 |
.8268-.8661 |
21-22 |
| – |
– |
– |
– |
– |
ER40-0875 |
.836-.875 |
– |
| – |
– |
– |
– |
– |
ER40-0905 |
.8661-.9055 |
22-23 |
| – |
– |
– |
– |
– |
ER40-0944 |
9055-.9449 |
23-24 |
| – |
– |
– |
– |
– |
ER40-0984 |
.9449-.9843 |
24-25 |
| – |
– |
– |
– |
– |
ER40-1000 |
.961-1.000 |
– |
| – |
– |
– |
– |
– |
ER40-1023 |
.9843-1.0236 |
25-26 |
| – |
– |
– |
– |
– |
ER40-1063 |
1.0236-1.0630 |
26-27 |
| – |
– |
– |
– |
– |
ER40-1102 |
1.0630-1.1024 |
27-28 |
| – |
– |
– |
– |
– |
ER40-1141 |
1.1024-1.1418 |
28-29 |
| – |
– |
– |
– |
– |
ER40-1181 |
1.1418-1.1812 |
29-30 |
* ER11 maximum collapse range is .020” (.5mm)
COLLET
| Type |
L |
D |
| ER11 |
708 |
.452 |
| ER16 |
1.082 |
.669 |
| ER20 |
1.240 |
.827 |
| ER25 |
1.338 |
1.023 |
| ER32 |
1.574 |
1.300 |
| ER40 |
1.811 |
1.614 |
ER11 COLLET SETS
| Part Number |
Quantity |
Range |
| ER11-S013 |
13 |
.5mm - 7mm |
ER16 COLLET SETS
| Part Number |
Quantity |
Range |
| ER16-S010 |
10 |
.5mm - 10mm |
| ER16-S012 |
12 |
1/16 - 13/32 x 1/32" |
ER20 COLLET SETS
| Part Number |
Quantity |
Range |
| ER20-S012 |
12 |
1mm - 13mm |
| ER20-S015 |
15 |
1/16 - 1/2" x 1/32" |
ER25 COLLET SETS
| Part Number |
Quantity |
Range |
| ER25-S015 |
15 |
1mm - 16mm |
ER32 COLLET SETS
| Part Number |
Quantity |
Range |
| ER32-S018 |
18 |
2mm - 20mm |
| ER32-S022 |
21 |
1/8 - 3/4 x 1/32" |
ER40 COLLET SETS
| Part Number |
Quantity |
Range |
| ER40-S023 |
23 |
4mm - 26mm |
