Straight Shank ER Collet Chucks, Hex & Slotted, ER16, ER20, ER25, ER40, ER32

Shank Length: 1.96", ER16, Hex (0223-0207)

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Straight Shank ER Hex Collet Chucks

  • Made of high-quality alloy steel
  • Hardened to HRC 56-60
  • Precision ground
  • 0.0002" TIR or better


Item Collet Series Collet Capacity Collet Nut Dia. (D) Collet Nut Style Shank Dia. (C) Shank Length (L1) Thread OAL (L)
0223-0207 ER16 0.02"-0.393" 1.10" Hex 3/4" 1.96" 3/8-16" 3.35"
0223-0208 ER16 0.02"-0.393" 1.10" Hex 3/4" 3.94" 3/8-16" 5.31"
0223-0209 ER16 0.02"-0.393" 1.10" Hex 3/4" 5.51" 3/8-16" 6.89"
0223-0210 ER20 0.04"-0.511" 1.34" Hex 3/4" 2.50" 3/8-16" 3.93"
0223-0211 ER25 0.04"-0.629" 1.65" Slotted 1" 1.96" 1/2-13" 3.97"
0223-0212 ER32 0.08"-0.787" 1.97" Slotted 1" 1.96" 1/2-13" 4.00"
0223-0213 ER40 0.118"-1.023" 2.48" Slotted 1" 2.56" 1/2-13" 5.00"
0223-0214 ER32 0.08"-0.787" 1.97" Slotted 1" 2.36" 1/2-13" 4.39"
0223-0216 ER32 0.08"-0.787" 1.97" Slotted 1-1/4" 6.20" - 8.25"


**** For #0223-0207, it is threaded for a M22 x 1.5 ER16 Collet Nut

Design, Assemble, and Dissemble of ER Collet Nut

Eccentric Design, ISO 15488:2003(E), Accusize ER Collet Chuck Nut
Assemble Accusize ER Collet Nut
Inspection of Accusize ER Collet Chuck and Nut
Dissemble Accusize ER Collet Nut
Eccentric Design, ISO 15488:2003(E) Assemble Inspection Dissemble
The inside of the ER collet nut is intentionally designed like off-centering to help mount the ER collet much easier. It is in accordance with the requirements listed in ISO 15488:2003(E). If it is made symmetrical, the ER collet with the diameter larger than the inside size of the collet nut cannot be installed. Insert the ER collet into the nut at an angle. Lock it onto the eccentric groove of the collet nut and push it in. (Insert the cutter right after the step, before connect it to the holder/chuck/arbor.)

Inspect the RPM of the ER collet, ER collet nut, ER collet holder/chuck/arbor, etc. Take out the tool bit, press the end of the ER collet until the collet off the position. Push it out of the nut. (after take out the nut out of the holder.)

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