Sumitomo General Catalog 2025-2026

ER Collets - Inch & Metric

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Spring Collets ER16 (Inch) Catalog Number Dimensions (inch) D L d ER16-1/16 0.669 1.063 0.043-0.062 ER16-3/32 0.669 1.063 0.054-0.093 ER16-1/8 0.669 1.063 0.086-0.125 ER16-5/32 0.669 1.063 0.117-0.156 ER16-3/16 0.669 1.063 0.148-0.187 ER16-7/32 0.669 1.063 0.179-0.218 ER16-1/4 0.669 1.063 0.211-0.250 ER16-9/32 0.669 1.063 0.242-0.281 ER16-5/16 0.669 1.063 0.273-0.312 ER16-11/32 0.669 1.063 0.304-0.343 ER16-3/8 0.669 1.063 0.336-0.375 ER16-13/32 0.669 1.063 0.367-0.406 ER16 12pc. Collet Set – – – ER20(Inch) ER20-1/8 0.827 1.22 0.086-0.125 ER20-3/16 0.827 1.22 0.148-0.187 ER20-1/4 0.827 1.22 0.211-0.250 ER20-5/16 0.827 1.22 0.273-0.312 ER20-3/8 0.827 1.22 0.336-0.375 ER20-7/16 0.827 1.22 0.398-0.437 ER20-1/2 0.827 1.22 0.461-0.500

Spring Collets ER32 ( Metric ) Catalog Number Dimensions (mm) D L d ER32-2.0 33 40 2.0-1.5 ER32-3.0 33 40 3.0-2.5 ER32-4.0 33 40 4.0-3.5 ER32-5.0 33 40 5.0-4.5 ER32-6.0 33 40 6.0-5.5 ER32-7.0 33 40 7.0-6.5 ER32-8.0 33 40 8.0-7.5 ER32-9.0 33 40 9.0-8.5 ER32-10.0 33 40 10.0-9.5 ER32-11.0 33 40 11.0-10.5 ER32-12.0 33 40 12.0-11.5 ER32-13.0 33 40 13.0-12.5 ER32-14.0 33 40 14.0-13.5 ER32-15.0 33 40 15.0-14.5 ER32-16.0 33 40 16.0-15.5 ER32-17.0 33 40 17.0-16.5 ER32-18.0 33 40 18.0-17.5 ER32-19.0 33 40 19.0-18.5 ER32-20.0 33 40 20.0-19.5 ER32 18pc. Collet Set – – –

Spring Collets ER32(Inch) Catalog Number Dimensions (inch) D L d ER32-1/8 1.299 1.575 0.086-0.125 ER32-3/16 1.299 1.575 0.148-0.187 ER32-1/4 1.299 1.575 0.211-0.250 ER32-5/16 1.299 1.575 0.273-0.312 ER32-3/8 1.299 1.575 0.336-0.375 ER32-7/16 1.299 1.575 0.398-0.437 ER32-1/2 1.299 1.575 0.461-0.500 ER32-9/16 1.299 1.575 0.523-0.562 ER32-5/8 1.299 1.575 0.586-0.625 ER32-11/16 1.299 1.575 0.648-0.687 ER32-3/4 1.299 1.575 0.711-0.750 ER32 12pc Collet Set – – – ER40 (Inch) ER40-1/8 1.614 1.811 0.086-0.125 ER40-3/16 1.614 1.811 0.148-0.187 ER40-1/4 1.614 1.811 0.211-0.250 ER40-5/16 1.614 1.811 0.273-0.312 ER40-3/8 1.614 1.811 0.336-0.375 ER40-7/16 1.614 1.811 0.398-0.437 ER40-1/2 1.614 1.811 0.461-0.500 ER40-9/16 1.614 1.811 0.523-0.562 ER40-5/8 1.614 1.811 0.586-0.625 ER40-11/16 1.614 1.811 0.648-0.687 ER40-3/4 1.614 1.811 0.711-0.750 ER40-7/8 1.614 1.811 0.836-0.875 ER40-1.0 1.614 1.811 0.961-1.000 ER40 14pc. Collet Set – – –

Spring Collets ER16 ( Metric ) Catalog Number Dimensions ( mm ) D L d ER16-1.0 17 27 1.0-0.5 ER16-1.5 17 27 1.5-1.0 ER16-2.0 17 27 2.0-1.5 ER16-2.5 17 27 2.5-2.0 ER16-3.0 17 27 3.0-2.5 ER16-3.5 17 27 3.5-3.0 ER16-4.0 17 27 4.0-3.5 ER16-4.5 17 27 4.5-4.0 ER16-5.0 17 27 5.0-4.5 ER16-5.5 17 27 5.5-5.0 ER16-6.0 17 27 6.0-5.5 ER16-6.5 17 27 6.5-6.0 ER16-7.0 17 27 7.0-6.5 ER16-7.5 17 27 7.5-7.0 ER16-8.0 17 27 8.0-7.5 ER16-8.5 17 27 8.5-8.0 ER16-9.0 17 27 9.0-8.5 ER16-9.5 17 27 9.5-9.0 ER16-10.0 17 27 10.0-9.5 ER16 10pc. Collet Set – – –

ER20 ( Metric ) ER20-1.0

ER40 ( Metric ) ER40-3.0

21 31 1.0-0.5 21 31 2.0-1.5 21 31 3.0-2.5 21 31 4.0-3.5 21 31 5.0-4.5 21 31 6.0-5.5 21 31 7.0-6.5 21 31 8.0-7.5

41 46 3.0-2.5 41 46 4.0-3.5 41 46 5.0-4.5 41 46 6.0-5.5 41 46 7.0-6.5 41 46 8.0-7.5

ER20 7pc. Collet Set

ER20-2.0 ER20-3.0 ER20-4.0 ER20-5.0 ER20-6.0 ER20-7.0 ER20-8.0 ER20-9.0

ER40-4.0 ER40-5.0 ER40-6.0 ER40-7.0 ER40-8.0 ER40-9.0

– –

ER25 (Inch) ER25-1/8 1.024 1.378 0.086-0.125 ER25-3/16 1.024 1.378 0.148-0.187 ER25-1/4 1.024 1.378 0.211-0.250 ER25-5/16 1.024 1.378 0.273-0.312 ER25-3/8 1.024 1.378 0.336-0.375 ER25-7/16 1.024 1.378 0.398-0.437 ER25-1/2 1.024 1.378 0.461-0.500 ER25-9/16 1.024 1.378 0.523-0.562 ER25-5/8 1.024 1.378 0.586-0.625

41 46 9.0-8.5 ER40-10.0 41 46 10.0-9.5 ER40-11.0 41 46 11.0-10.5 ER40-12.0 41 46 12.0-11.5 ER40-13.0 41 46 13.0-12.5 ER40-14.0 41 46 14.0-13.5 ER40-15.0 41 46 15.0-14.5 ER40-16.0 41 46 16.0-15.5 ER40-17.0 41 46 17.0-16.5 ER40-18.0 41 46 18.0-17.5 ER40-19.0 41 46 19.0-18.5 ER40-20.0 41 46 20.0-19.5 ER40-21.0 41 46 21.0-20.5 ER40-22.0 41 46 22.0-21.5 ER40-23.0 41 46 23.0-22.5 ER40-24.0 41 46 24.0-23.5 ER40-25.0 41 46 25.0-24.5 ER40-26.0 41 46 26.0-25.5 ER40 23pc. Collet Set – – –

21 31 9.0-8.5 ER20-10.0 21 31 10.0-9.5 ER20-11.0 21 31 11.0-10.5 ER20-12.0 21 31 12.0-11.5 ER20-13.0 21 31 13.0-12.5 ER20 12pc. Collet Set – – –

ER25 9pc. Collet Set

– –

ER25 ( Metric ) ER25-2.0

26 35 2.0-1.5 26 35 3.0-2.5 26 35 4.0-3.5 26 35 5.0-4.5 26 35 6.0-5.5 26 35 7.0-6.5 26 35 8.0-7.5

ER25-3.0 ER25-4.0 ER25-5.0 ER25-6.0 ER25-7.0 ER25-8.0 ER25-9.0

26 35 9.0-8.5 ER25-10.0 26 35 10.0-9.5 ER25-11.0 26 35 11.0-10.5 ER25-12.0 26 35 12.0-11.5 ER25-13.0 26 35 13.0-12.5 ER25-14.0 26 35 14.0-13.5 ER25-15.0 26 35 15.0-14.5 ER25-16.0 26 35 16.0-15.5 ER25 15pc. Collet Set – – –

N16

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