ER COLLET CHUCKS
ER20 COLLETS
Precision Standard Precision slots allow for even distribution of clamping pressure and minimal run out.
Coolant-Thru Our patented Coolant Collets are designed for use with cylindrical shank tools (no flats). Cutting tool should be inserted the full length of the collet. If these conditions are not met, coolant leakage may result. Seals up to maximum coolant pressure of 1015 psi. Steel-sealed and mechanically sealed by design.
Size Range: 1/16 - 1/2 "
Size Range: 2.0 - 13.0m
Size Range: 5/32 - 1/2 "
Size Range: 5.0 - 13.0mm (0.197 - 0.512 " )
(0.062 - 0.500 " )
(0.079 - 0.512 " )
(0.156 - 0.500 " )
INCH Part Number Size
METRIC Part Number Size
INCH COOLANT-THRU Part Number Size
METRIC COOLANT-THRU Part Number Size Collapse Range E20-196(C) 5.0mm 4.9 - 5mm E20-216(C) 5.5mm 5.4 - 5.5mm E20-236(C) 6.0mm 5.5 - 6mm E20-255(C) 6.5mm 6 - 6.5mm E20-275(C) 7.0mm 6.5 - 7mm E20-295(C) 7.5mm 7 - 7.5mm E20-314(C) 8.0mm 7.5 - 8mm E20-334(C) 8.5mm 8 - 8.5mm E20-354(C) 9.0mm 8.5 - 9mm E20-374(C) 9.5mm 9 - 9.5mm E20-393(C) 10.0mm 9.5 - 10mm E20-413(C) 10.5mm 10 - 10.5mm E20-433(C) 11.0mm 10.5 - 11mm E20-452(C) 11.5mm 11 - 11.5mm E20-472(C) 12.0mm 11.5 - 12mm E20-492(C) 12.5mm 12 - 12.5mm E20-511(C) 13.0mm 12.5 - 13mm
Collapse Range
Collapse Range
Collapse Range
E20-004 E20-006 E20-008 E20-010 E20-012 E20-014 E20-016 E20-018 E20-020 E20-022 E20-024 E20-026 E20-028 E20-030 E20-032
1/16" 0.043 - 0.063" 3/32" 0.074 - 0.094" 1/8" 0.105 - 0.125" 5/32" 0.136 - 0.156" 3/16" 0.148 - 0.188" 7/32" 0.179 - 0.219" 1/4" 0.211 - 0.25" 9/32" 0.242 - 0.281" 5/16" 0.273 - 0.313" 11/32" 0.304 - 0.344" 3/8" 0.336 - 0.375" 13/32" 0.367 - 0.406" 7/16" 0.398 - 0.438" 15/32" 0.429 - 0.469" 1/2" 0.461 - 0.5"
E20-078 E20-098 E20-118 E20-137 E20-157 E20-177 E20-196 E20-236 E20-275 E20-314 E20-354
2.0mm 1.5 - 2mm 2.5mm 2 - 2.5mm 3.0mm 2.5 - 3mm 3.5mm 3 - 3.5mm 4.0mm 3.5 - 4mm 4.5mm 4 - 4.5mm 5.0mm 4 - 5mm 6.0mm 5 - 6mm 7.0mm 6 - 7mm 8.0mm 7 - 8mm
E20-010(C) 5/32" 0.152 - 0.156" E20-011(C) 11/64" 0.168 - 0.172" E20-012(C) 3/16" 0.183 - 0.188" E20-013(C) 13/64" 0.199 - 0.203" E20-014(C) 7/32" 0.199 - 0.219" E20-015(C) 15/64" 0.215 - 0.234" E20-016(C) 1/4" 0.23 - 0.25" E20-017(C) 17/64" 0.246 - 0.266" E20-018(C) 9/32" 0.262 - 0.281" E20-019(C) 19/64" 0.277 - 0.297" E20-020(C) 5/16" 0.293 - 0.313" E20-021(C) 21/64" 0.308 - 0.328" E20-022(C) 11/32" 0.324 - 0.344" E20-023(C) 23/64" 0.34 - 0.359" E20-024(C) 3/8" 0.355 - 0.375" E20-025(C) 25/64" 0.371 - 0.391" E20-026(C) 13/32" 0.387 - 0.406" E20-027(C) 27/64" 0.402 - 0.422" E20-028(C) 7/16" 0.418 - 0.438" E20-029(C) 29/64" 0.433 - 0.453" E20-030(C) 15/32" 0.449 - 0.469" E20-031(C) 31/64" 0.465 - 0.484" E20-032(C) 1/2" 0.48 - 0.5"
9.0mm 8 - 9mm E20-393 10.0mm 9 - 10mm E20-433 11.0mm 10 - 11mm E20-452 11.5mm 10.5 - 11.5mm E20-472 12.0mm 11 - 12mm E20-511 13.0mm 12 - 13mm
ER20 COLLET SETS E20-SET-15
ER20 COOLANT COLLET SETS E20-SET-12(C)
15 Piece Set: 1/16" - 1/2" by 1/32nds 11 Piece Set: 3.0mm - 13.0mm by 1mm
12 Piece Set: 5/32" - 1/2" by 1/32nds 17 Piece Set: 4.9mm - 13.0mm by 0.5mm
E20-SET-11-MM
E20-SET-17(C)-MM
Note: See dimensional data for ER20 Collets on page 59.
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