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ER Series Collets & Sets

Features and Benefits

  • ER collets system is made of a special elastic steel material under an excellent heat treatment and precise grinding process, which results in precise accuracy, powerful clamping ability and durability.

  • Collet can clamp for a specific standard size and its next size.

  • Can be widely used for boring, milling, drilling and tapping as well as for grinding operations.

  • Available for all sizes.

Collapse Range

ER11 collets collapse approximately 1/64″, while maintaining full accuracy. All other types collapse approximately 1/32″, while maintaining full accuracy.

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Description

Additional Information

ER Series Collets

Series Size [inch] Collet Range Min.-Max. [inch] MSC Item #
ER8 1/16 0.0424-0.0625 50336882
ER8 1/8 0.1060-0.1250 50336601
ER8 3/16 0.1720-0.1880 50336619
ER11 1/16 0.046-0.063 93248268
ER11 3/32 0.078-0.094 93248532
ER11 1/8 0.109-0.125 93248565
ER11 5/32 0.141-0.156 93248524
ER11 3/16 0.172-0.188 93248599
ER11 7/32 0.188-0.219 93248417
ER11 1/4 0.234-0.250 93248607
ER16 1/16 0.046-0.063 93248623
ER16 3/32 0.078-0.094 93248557
ER16 1/8 0.109-0.125 93248516
ER16 9/64 0.1046-0.1249 50336486
ER16 5/32 0.141-0.156 93248375
ER16 3/16 0.172-0.188 93248391
ER16 7/32 0.188-0.219 93248615
ER16 1/4 0.234-0.250 93248409
ER16 9/32 0.250-0.281 93248227
ER16 5/16 0.281-0.313 93248573
ER16 11/32 0.313-0.349 93248425
ER16 3/8 0.343-0.375 93248383
ER16 13/32 0.375-0.406 93248540
ER20 1/16 0.046-0.063 93248763
ER20 3/32 0.078-0.094 93248177
ER20 1/8 0.109-0.125 93248722
ER20 5/32 0.141-0.156 93248078
ER20 3/16 0.172-0.188 93248649
ER20 7/32 0.188-0.219 93248128
ER20 1/4 0.234-0.250 93248193
ER20 9/32 0.250-0.281 93248755
ER20 5/16 0.281-0.313 93248664
ER20 11/32 0.313-0.349 93248169
ER20 3/8 0.343-0.375 93248219
ER20 13/32 0.375-0.406 93248748
ER20 7/16 0.422-0.438 93248672
ER20 15/32 0.438-0.469 93248185
ER20 1/2 0.469-0.500 93248730
ER25 1/8 0.109-0.125 93248714
ER25 5/32 0.141-0.156 93248490
ER25 3/16 0.172-0.188 93248656
ER25 7/32 0.188-0.219 93248466
ER25 1/4 0.234-0.250 93248144
ER25 9/32 0.250-0.281 93248458
ER25 5/16 0.281-0.313 93248706
ER25 11/32 0.313-0.349 93248151
ER25 3/8 0.343-0.375 93248102
ER25 13/32 0.375-0.406 93248698
ER25 7/16 0.422-0.438 93248805
ER25 15/32 0.438-0.469 93248086
ER25 1/2 0.4619-0.500 65812950
ER25 17/32 0.516-0.531 93248680
ER25 9/16 0.546-0.563 93248789
ER25 19/32 0.578-0.594 93248136
ER25 5/8 0.609-0.625 93248482
ER32 3/32 0.078-0.094 50337039
ER32 1/8 0.109-0.125 93248821
ER32 5/32 0.141-0.156 93248342
ER32 3/16 0.172-0.188 93248250
ER32 7/32 0.188-0.219 93248920
ER32 1/4 0.234-0.250 93248474
ER32 9/32 0.250-0.281 93248912
ER32 5/16 0.281-0.313 93248961
ER32 11/32 0.313-0.349 93248862
ER32 3/8 0.343-0.375 93248292
ER32 13/32 0.375-0.406 93248441
ER32 7/16 0.422-0.438 93248300
ER32 15/32 0.438-0.469 93248870
ER32 1/2 0.469-0.500 93248771
ER32 17/32 0.516-0.531 93248367
ER32 9/16 0.546-0.563 93248318
ER32 19/32 0.578-0.594 93248896
ER32 5/8 0.593-0.625 93248938
ER32 21/32 0.625-0.656 93248276
ER32 11/16 0.656-0.688 93248433
ER32 23/32 0.688-0.719 93248953
ER32 3/4 0.719-0.750 93248946
ER40 1/8 0.109-0.125 93248847
ER40 3/16 0.172-0.188 93248979
ER40 7/32 0.188-0.219 93249001
ER40 1/4 0.234-0.250 93247997
ER40 9/32 0.250-0.281 93248201
ER40 5/16 0.281-0.313 93248995
ER40 11/32 0.313-0.349 93248888
ER40 3/8 0.343-0.375 93249019
ER40 13/32 0.375-0.406 93248839
ER40 7/16 0.406-0.437 65812943
ER40 15/32 0.429-0.469 93248797
ER40 1/2 0.469-0.500 93248854
ER40 17/32 0.516-0.531 93248094
ER40 9/16 0.546-0.563 93249027
ER40 19/32 0.578-0.594 93248813
ER40 5/8 0.593-0.625 93248037
ER40 21/32 0.625-0.656 93248045
ER40 11/16 0.656-0.688 93247989
ER40 23/32 0.688-0.719 93248904
ER40 3/4 0.719-0.750 93248003
ER40 25/32 0.750-0.781 93248011
ER40 13/16 0.781-0.813 93247963
ER40 27/32 0.813-0.843 93248987
ER40 7/8 0.844-0.875 93248060
ER40 29/32 0.875-0.906 93247971
ER40 15/16 0.906-0.938 93248052
ER40 31/32 0.938-0.969 93248029
ER40 1 0.969-1.000 93248110

Collet Sets

Series Range of Set [inch] MSC Item #
ER11 7 Pc. Set 1/16-1/4 45243482
ER16 10 Pc. Set 1/32-3/8 45243474
ER20 12 Pc. Set 1/16-1/2 45243458
ER25 15 Pc. Set 3/16-5/8 45243516
ER32 18 Pc. Set 3/32-3/4 45243508
ER40 23 Pc. Set 5/16-1 45243490

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