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E/R Series Collets


ER Chucks are used for precision work.

ER Collets achieve greater grip strength and higher precision than do double angle collets. To use, first insert the collet into the chuck nut by squeezing the collet and pressing its face into the chuck nut collar ring until the collet collar is fully seated. Then load the collet into the chuck, insert a cutting tool and tighten with the appropriate nut wrench. For collet removal, simply squeeze the collet while pulling it from the chuck nut at an angle. Chucks are equipped with a left-handed-threaded stop screw and a chuck nut.
  • Tolerance: Guaranteed to be 0.0002" at the collets' nose.
  • Accuracy: ER collets are the most accurate collets available.

Missing ImageMissing Image


Item #Series Clamping Range OD O.A.L.
71900E/R 11 0.019 - 0.039 in., 0.5 - 1.0 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71901E/R 11 0.039 - 0.059 in., 1.0 - 1.5 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71902E/R 11 0.059 - 0.079 in., 1.5 - 2.0 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71903E/R 11 0.079 - 0.098 in., 2.0 - 2.5 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71904E/R 11 0.098 - 0.118 in., 2.5 - 3.0 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71905E/R 11 0.118 - 0.138 in., 3.0 - 3.5 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71906E/R 11 0.138 - 0.157 in., 3.5 - 4.0 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71907E/R 11 0.157 - 0.177 in., 4.0 - 4.5 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71908E/R 11 0.177 - 0.197 in., 4.5 - 5.0 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71909E/R 11 0.197 - 0.217 in., 5.0 - 5.5 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71910E/R 11 0.217 - 0.236 in., 5.5 - 6.0 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71911E/R 11 0.236 - 0.256 in., 6.0 - 6.5 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71912E/R 11 0.256 - 0.276 in., 6.5 - 7.0 mm 0.453 in., 11.5 mm 0.709 in., 18mm
71914E/R 16 0.019 - 0.039 in., 0.5 - 1.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71915E/R 16 0.039 - 0.079 in., 1.0 - 2.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71916E/R 16 0.079 - 0.118 in., 2.0 - 3.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71917E/R 16 0.118 - 0.157 in., 3.0 - 4.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71918E/R 16 0.157 - 0.197 in., 4.0 - 5.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71919E/R 16 0.197 - 0.236 in., 5.0 - 6.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71920E/R 16 0.236 - 0.276 in., 6.0 - 7.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71921E/R 16 0.276 - 0.315 in., 7.0 - 8.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71922E/R 16 0.315 - 0.354 in., 8.0 - 9.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71923E/R 16 0.354 - 0.394 in., 9.0 - 10.0 mm 0.669 in., 17 mm 1.063 in., 27 mm
71925E/R 20 0.039 - 0.079 in., 1.0 - 2.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71926E/R 20 0.079 - 0.118 in., 2.0 - 3.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71927E/R 20 0.118 - 0.157 in., 3.0 - 4.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71928E/R 20 0.157 - 0.197 in., 4.0 - 5.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71929E/R 20 0.197 - 0.236 in., 5.0 - 6.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71930E/R 20 0.236 - 0.276 in., 6.0 - 7.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71931E/R 20 0.276 - 0.315 in., 7.0 - 8.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71932E/R 20 0.315 - 0.354 in., 8.0 - 9.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71933E/R 20 0.354 - 0.394 in., 9.0 - 10.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71934E/R 20 0.394 - 0.433 in., 10.0 - 11.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71935E/R 20 0.433 - 0.472 in., 11.0 - 12.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71936E/R 20 0.472 - 0.512 in., 12.0 - 13.0 mm 0.827 in., 21 mm 1.22 in., 31 mm
71938E/R 25 0.039 - 0.079 in., 1.0 - 2.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71939E/R 25 0.079 - 0.118 in., 2.0 - 3.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71940E/R 25 0.118 - 0.157 in., 3.0 - 4.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71941E/R 25 0.157 - 0.197 in., 4.0 - 5.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71942E/R 25 0.197 - 0.236 in., 5.0 - 6.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71943E/R 25 0.236 - 0.276 in., 6.0 - 7.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71944E/R 25 0.276 - 0.315 in., 7.0 - 8.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71945E/R 25 0.315 - 0.354 in., 8.0 - 9.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71946E/R 25 0.345 - 0.394 in., 9.0 - 10.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71947E/R 25 0.394 - 0.433 in., 10.0 - 11.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71948E/R 25 0.433 - 0.472 in., 11.0 - 12.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71949E/R 25 0.472 - 0.512 in., 12.0 - 13.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71950E/R 25 0.512 - 0.551 in., 13.0 - 14.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71951E/R 25 0.551 - 0.591 in., 14.0 - 15.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71952E/R 25 0.591 - 0.630 in., 15.0 - 16.0 mm 1.024 in., 26 mm 1.378 in., 35 mm
71954E/R 32 0.079 - 0.118 in., 2.0 - 3.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71955E/R 32 0.118 - 0.157 in., 3.0 - 4.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71956E/R 32 0.157 - 0.197 in., 4.0 - 5.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71957E/R 32 0.197 - 0.236 in., 5.0 - 6.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71958E/R 32 0.236 - 0.275 in., 6.0 - 7.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71959E/R 32 0.276 - 0.315 in., 7.0 - 8.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71960E/R 32 0.315 - 0.354 in., 8.0 - 9.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71961E/R 32 0.354 - 0.394 in., 9.0 - 10.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71962E/R 32 0.394 - 0.433 in., 10.0 - 11.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71963E/R 32 0.433 - 0.472 in., 11.0 - 12.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71964E/R 32 0.472 - 0.512 in., 12.0 - 13.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71965E/R 32 0.512 - 0.551 in., 13.0 - 14.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71966E/R 32 0.551 - 0.591 in., 14.0 - 15.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71967E/R 32 0.591 - 0.630 in., 15.0 - 16.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71968E/R 32 0.630 - 0.669 in., 16.0 - 17.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71969E/R 32 0.669 - 0.709 in., 17.0 - 18.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71970E/R 32 0.709 - 0.748 in., 18.0 - 19.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71971E/R 32 0.748 - 0.787 in., 19.0 - 20.0 mm 1.299 in., 33 mm 1.575 in., 40 mm
71973E/R 40 0.118 - 0.157 in., 3.0 - 4.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71974E/R 40 0.157 - 0.197 in., 4.0 - 5.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71975E/R 40 0.197 - 0.236 in., 5.0 - 6.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71976E/R 40 0.236 - 0.276 in., 6.0 - 7.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71977E/R 40 0.276 - 0.315 in., 7.0 - 8.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71978E/R 40 0.315 - 0.354 in., 8.0 - 9.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71979E/R 40 0.354 - 0.394 in., 9.0 - 10.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71980E/R 40 0.394 - 0.433 in., 10.0 - 11.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71981E/R 40 0.433 - 0.472 in., 11.0 - 12.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71982E/R 40 0.472 - 0.512 in., 12.0 - 13.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71983E/R 40 0.512 - 0.551 in., 13.0 - 14.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71984E/R 40 0.551 - 0.591 in., 14.0 - 15.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71985E/R 40 0.591 - 0.630 in., 15.0 - 16.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71986E/R 40 0.630 - 0.669 in., 16.0 - 17.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71987E/R 40 0.669 - 0.709 in., 17.0 - 18.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71988E/R 40 0.709 - 0.748 in., 18.0 - 19.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71989E/R 40 0.748 - 0.787 in., 19.0 - 20.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71990E/R 40 0.787 - 0.827 in., 20.0 - 21.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71991E/R 40 0.827 - 0.866 in., 21.0 - 22.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71992E/R 40 0.866 - 0.906 in., 22.0 - 23.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71993E/R 40 0.906 - 0.945 in., 23.0 - 24.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71994E/R 40 0.945 - 0.984 in., 24.0 - 25.0 mm 1.614 in., 41 mm 1.811 in., 46 mm
71995E/R 40 0.984 - 1.024 in., 25.0 - 26.0 mm 1.614 in., 41 mm 1.811 in., 46 mm