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ER-40 Collets

Accu-Collets ER COLLETS
AccuColletsâ„¢ Precision and UltraPrecision Collets DIN 6499-form B (ER) set new standards of accuracy.
Precision Collets concentricity is 15 microns or 0.0005" TIR or better
Ultra Precision Collets is 6 microns or 0.0002" TIR or better
  • Concentricity is 13 microns or 0.0005" TIR or better
  • Manufactured with Swiss technology
  • Crafted from high quality European alloy spring steel
  • TRUE INCH and metric sizes
  • Fractional Collets manufactured specifically for US market requirements. Use "on size" collets for best results
  • 16 slot construction for rigid clamping and extra concentricity
  • Accu-Collets improve tool life, part finish and reduces spindle wear
  • Can be used for drilling, milling, tapping and reaming
Precision ER Collets 0.0005" TIR or better as measured over the entire clamping range per DIN 6499 Standards
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ON SIZE Nominal Size Precision Ultra Precision
Frac MM Dec. Range Nominal Sizes Covered $11.25 Each $26.00 Each
3/64 - 0.047 0.046-0.026 3/64, 1/16, 5/64 40-0047-3/64
1/16 - 0.062 0.062-0.042 1/16, 3/64 40-0063-1/16
5/64 - 0.078 0.078-0.058 5/64, 3/32, 7/64 40-0078-5/64
3/32 - 0.093 0.093-0.054 3/32, 5/64, 1/16 40-0094-3/32
- 2.5 0.098 0.098-0.079 7/64, 1/8 40-0098-2.5
7/64 - 0.109 0.109-0.089 7/64, 1/8 40-0109-7/64
- 3.0 0.118 0.118-0.079 7/64, 3/32 40-0118-3.0
1/8 - 0.125 0.125-0.085 1/8, 7/64 40-0125-1/8 40-0125-1/8UP
- 3.5 0.138 0.138-0.118 5/32, 11/64 40-0138-3.5 40-0138-3.5UP
9/64 - 0.141 0.140-0.120 5/32, 11/64 40-0140-9/64 40-0140-9/64UP
5/32 - 0.156 0.156-0.117 5/32, 9/64, 1/8 40-0156-5/32 40-0156-5/32UP
- 4.0 0.157 0.157-0.118 5/32, 9/64 40-0157-4.0 40-0157-4.0UP
11/64 0.172 0.171-0.151 3/16, 13/64 40-0171-11/64 40-0171-11/64UP
- 4.5 0.177 0.177-0.158 3/16, 13/64 40-0177-4.5 40-0177-4.5UP
3/16 - 0.187 0.187-0.148 3/16, 11/64 40-0187-3/16 40-0187-3/16UP
- 5.0 0.196 0.196-0.157 3/16, 11/64 40-0196-5.0 40-0196-5.0UP
13/64 - 0.203 0.203-0.183 13/64, 7/32, 15/64 40-0203-13/64 40-0203-13/64UP
- 5.5 0.217 0.217-0.197 7/32, 15/64, 1/4 40-0216-5.5 40-0216-5.5UP
7/32 - 0.218 0.218-0.179 7/32, 13/64 40-0218-7/32 40-0218-7/32UP
15/64 - 0.234 0.234-0.214 15/64, 1/4, 17/64 40-0234-15/64 40-0234-15/64UP
- 6.0 0.236 0.236-0.197 15/64, 7/32 40-0236-6.0 40-0236-6.0UP
1/4 - 0.250 0.250-0.211 1/4, 15/64, 7/32 40-0250-1/4 40-0250-1/4UP
- 6.5 0.256 0.256-0.236 17/64, 9/32 40-0256-6.5 40-0256-6.5UP
17/64 - 0.266 0.265-0.245 9/32, 19/64 40-0265-17/64 40-0265-17/64UP
- 7.0 0.275 0.275-0.236 17/64, 1/4 40-0275-7.0 40-0275-7.0UP
9/32 - 0.281 0.281-0.242 9/32, 17/64 40-0281-9/32 40-0281-9/32UP
- 7.5 0.295 0.295-0.256 19/64, 5/16, 21/64 40-0296-7.5 40-0296-7.5UP
19/64 - 0.297 0.296-0.257 5/16, 21/64 40-0296-19/64 40-0296-19/64UP
5/16 - 0.312 0.312-0.273 5/16, 19/64, 9/32 40-0312-5/16 40-0312-5/16UP
- 8.0 0.315 0.315-0.276 5/16, 19/64 40-0315-8.0 40-0315-8.0UP
21/64 - 0.328 0.328-0.289 21/64, 11/32, 23/64 40-0328-21/64 40-0328-21/64UP
- 8.5 0.335 0.335-0.295 11/32, 23/64 40-0334-8.5 40-0334-8.5UP
11/32 - 0.343 0.343-0.304 11/32, 21/64 40-0343-11/32 40-0343-11/32UP
- 9.0 0.354 0.354-0.315 11/32, 21/64 40-0354-9.0 40-0354-9.0UP
23/64 - 0.359 0.359-0.320 23/64, 3/8, 25/64 40-0359-23/64 40-0359-23/64UP
3/8 - 0.375 0.375-0.336 3/8, 23/64 40-0375-3/8 40-0375-3/8UP
25/64 - 0.391 0.390-0.351 13/32, 27/64 40-0390-25/64 40-0390-25/64UP
- 10.0 0.393 0.393-0.354 25/64, 3/8 40-0393-10.0 40-0393-10.0UP
13/32 - 0.406 0.406-0.367 13/32, 25/64, 3/8 40-0406-13/32 40-0406-13/32UP
- 10.5 0.413 0.413-0.374 27/64, 7/16 40-0413-10.5 40-0413-10.5UP
27/64 - 0.422 0.421-0.382 7/16, 29/64 40-0421-27/64 40-0421-27/64UP
- 11.0 0.433 0.433-0.394 27/64, 13/32 40-0433-11.0 40-0433-11.0UP
7/16 - 0.437 0.437-0.398 7/16, 27/64 40-0437-7/16 40-0437-7/16UP
29/64 - 0.453 0.453-0.414 29/64, 15/32, 31/64 40-0453-29/64 40-0453-29/64UP
15/32 - 0.468 0.468-0.429 15/32, 29/64, 7/16 40-0468-15/32 40-0468-15/32UP
- 12.0 0.472 0.472-0.433 15/32, 29/64 40-0472-12.0 40-0472-12.0UP
31/64 - 0.484 0.484-0.445 31/64, 1/2, 33/64 40-0484-31/64 40-0484-31/64UP
- 12.5 0.492 0.492-0.453 1/2, 33/64 40-0492-12.5 40-0492-12.5UP
1/2 - 0.500 0.500-0.461 1/2, 31/64 40-0500-1/2 40-0500-1/2UP
- 13.0 0.511 0.511-0.472 1/2, 31/64 40-0511-13.0 40-0511-13.0UP
33/64 - 0.516 0.515-0.476 17/32, 35/64 40-0515-33/64 40-0515-33/64UP
17/32 - 0.531 0.531-0.492 17/32, 33/64 40-0531-17/32 40-0531-17/32UP
35/64 - 0.547 0.546-0.507 9/16, 37/64 40-0546-35/64 40-0546-35/64UP
- 14.0 0.551 0.551-0.512 35/64, 17/32 40-0551-14.0 40-0551-14.0UP
9/16 - 0.562 0.562-0.523 9/16, 35/64, 17/32 40-0562-9/16 40-0562-9/16UP
- 14.5 0.571 0.571-0.532 37/64, 19/32, 39/64 40-0570-14.5 40-0570-14.5UP
37/64 - 0.578 0.578-0.539 37/64, 19/32, 39/64 40-0578-37/64 40-0578-37/64UP
- 15.0 0.590 0.590-0.551 37/64, 9/16 40-0590-15.0 40-0590-15.0UP
19/32 - 0.593 0.593-0.554 19/32, 37/64 40-0593-19/32 40-0593-19/32UP
39/64 - 0.609 0.609-0.570 39/64, 5/8, 41/64 40-0609-39/64 40-0609-39/64UP
- 15.5 0.610 0.601-0.571 5/8, 41/64 40-0610-15.5 40-0610-15.5UP
5/8 - 0.625 0.625-0.586 5/8, 39/64, 19/32 40-0625-5/8 40-0625-5/8UP
- 16.0 0.630 0.630-0.591 5/8, 39/64 40-0630-16.0 40-0630-16.0UP
41/64 - 0.641 0.641-0.602 21/32, 43/64 40-0640-41/64 40-0640-41/64UP
- 16.5 0.650 0.650-0.610 21/32, 43/64, 11/16 40-0650-16.5 40-0650-16.5UP
21/32 - 0.656 0.656-0.617 21/32, 41/64 40-0656-21/32 40-0656-21/32UP
- 17.0 0.669 0.669-0.630 21/32, 41/64 40-0669-17.0 40-0669-17.0UP
43/64 - 0.672 0.672-0.633 11/16, 46/64 40-0671-43/64 40-0671-43/64UP
11/16 - 0.687 0.687-0.648 11/16, 43/64, 21/32 40-0687-11/16 40-0687-11/16UP
- 17.5 0.689 0.689-0.650 45/64, 23/32 40-0689-17.5 40-0689-17.5UP
45/64 - 0.703 0.703-0.664 45/64, 23/32, 47/64 40-0703-45/64 40-0703-45/64UP
- 18.0 0.708 0.708-0.669 45/64, 11/16 40-0708-18.0 40-0708-18.0UP
23/32 - 0.718 0.718-0.679 23/32, 45/64 40-0718-23/32 40-0718-23/32UP
- 18.5 0.728 0.728-0.689 47/64, 3/4, 49/64 40-0728-18.5 40-0728-18.5UP
47/64 - 0.734 0.734-0.695 47/64, 3/4, 49/64 40-0734-47/64 40-0734-47/64UP
- 19.0 0.748 0.748-0.709 47/64, 23/32 40-0748-19.0 40-0748-19.0UP
3/4 - 0.750 0.750-0.711 3/4, 47/64 40-0750-3/4 40-0750-3/4UP
49/64 - 0.766 0.766-0.727 25/32, 51/64 40-0765-49/64 40-0765-49/64UP
- 19.5 0.768 0.768-0.728 25/32, 51/64 40-0767-19.5 40-0767-19.5UP
25/32 - 0.781 0.781-0.742 25/32, 49/64, 3/4 40-0781-25/32 40-0781-25/32UP
- 20.0 0.787 0.787-0.748 25/32, 49/64 40-0787-20.0 40-0787-20.0UP
51/64 - 0.797 0.797-0.758 51/64, 13/16, 53/64 40-0796-51/64 40-0796-51/64UP
- 20.5 0.807 0.807-0.768 13/16, 53/64, 37/32 40-0807-20.5 40-0807-20.5UP
13/16 - 0.813 0.813-0.783 13/16, 53/64, 37/32 40-0812-13/16 40-0812-13/16UP
- 21.0 0.826 0.826-0.787 13/16, 51/64 40-0826-21.0 40-0826-21.0UP
53/64 - 0.828 0.828-0.789 53/64, 37/32, 55/64 40-0828-53/64 40-0828-53/64UP
27/32 - 0.843 0.843-0.804 27/32, 53/64, 13/16 40-0843-27/32 40-0843-27/32UP
- 21.5 0.846 0.846-0.807 55/64, 7/8 40-0846-21.5 40-0846-21.5UP
55/64 - 0.859 0.859-0.820 55/64, 7/8, 57/64 40-0859-55/64 40-0859-55/64UP
- 22.0 0.866 0.866-0.827 55/64, 27/32 40-0866-22.0 40-0866-22.0UP
7/8 - 0.875 0.875-0.836 7/8, 55/64 40-0875-7/8 40-0875-7/8UP
- 22.5 0.886 0.886-0.847 57/64, 29/32 40-0886-22.5 40-0886-22.5UP
57/64 - 0.891 0.891-0.852 57/64, 29/32, 59/64 40-0890-57/64 40-0890-57/64UP
- 23.0 0.905 0.905-0.866 57/64, 7/8 40-0905-23.0 40-0905-23.0UP
29/32 - 0.906 0.906-0.867 29/32, 57/64 40-0906-29/32 40-0906-29/32UP
59/64 - 0.922 0.922-0.883 59/64, 15/16, 61/64 40-0921-59/64 40-0921-59/64UP
- 23.5 0.925 0.925-0.886 15/16, 61/64 40-0925-23.5 40-0925-23.5UP
15/16 - 0.937 0.937-0.898 15/16, 59/64, 29/32 40-0937-15/16 40-0937-15/16UP
- 24.0 0.944 0.944-0.905 15/16, 59/64 40-0944-24.0 40-0944-24.0UP
61/64 - 0.953 0.953-0.911 61/64, 31/32, 63/64 40-0953-61/64 40-0953-61/64UP
- 24.5 0.965 0.965-0.925 31/32, 63/64, 1 40-0965-24.5 40-0965-24.5UP
31/32 - 0.968 0.968-0.929 31/32, 61/64 40-0968-31/32 40-0968-31/32UP
- 25.0 0.984 0.984-0.945 31/32, 61/64 40-0984-25.0 40-0984-25.0UP
63/64 - 0.984 0.984-0.945 63/64, 1, 1-1/64 40-0985-63/64 40-0985-63/64UP
1" - 1.000 1.000-0.961 1, 63/64, 31/32 40-1000-1-IN 40-1000-1-INUP
1-1/64 - 1.016 1.016-0.977 1-1/64, 63/64 40-1016-1-1/64 40-1016-1-164UP
- 26.0 1.024 1.024-0.984 1-1/64 40-1024-26.0 40-1024-26.0UP