(ER Single-Angle Standard Collets continued)

ER Collets • Inch

D1ER16 D2 = .669 L = 1.083ER20 D2 = .827 L = 1.240ER25 D2 = 1.024 L = 1.339ER32 D2 = 1.299 L = 1.575ER40 D2 = 1.614 L = 1.811collet capacity max inchcollet capacity min inch
1/1616ER006220ER006225ER0062.0625.0425
3/3220ER0094.0938.0538
3/3216ER009425ER0094.0938.0738
1/816ER012520ER012525ER012532ER012540ER0125.1250.0850
5/3216ER015620ER015625ER015632ER015640ER0156.1563.1163
3/1616ER018820ER018825ER018832ER018840ER0188.1875.1475
7/3216ER021920ER021925ER021932ER021940ER0219.2188.1788
1/416ER025020ER025025ER025032ER025040ER0250.2500.2100
9/3216ER028120ER028125ER028132ER028140ER0281.2813.2413
5/1616ER031220ER031225ER031232ER031240ER0312.3125.2725
11/3216ER034420ER034425ER034432ER034440ER0344.3438.3038
3/816ER037520ER037525ER037532ER037540ER0375.3750.3350
13/3216ER040620ER040625ER040632ER040640ER0406.4063.3663
7/1620ER043825ER043832ER043840ER0438.4375.3975
15/3220ER046925ER046932ER046940ER0469.4688.4288
1/220ER050025ER050032ER050040ER0500.5000.4600
17/3225ER053132ER053140ER0531.5313.4913
9/1632ER056240ER0562.5625.5225
9/1625ER0562.5626.5225
19/3225ER059432ER059440ER0594.5938.5538
5/825ER062532ER062540ER0625.6250.5850
21/3232ER065640ER0656.6563.6163
11/1632ER068840ER0688.6875.6475
23/3232ER071940ER0719.7188.6788
3/432ER075040ER0750.7500.7100
25/3232ER078140ER0781.7813.7413
13/1632ER081240ER0812.8125.7725
27/3240ER0844.8438.8038
7/840ER0875.8750.8350
29/3240ER0906.9063.8663
15/1640ER0938.9375.8975
31/3240ER0969.9688.9288
140ER10001.0000.9600

NOTE: Inserting the cutting tool less than 2/3 the gripping length into the collet can permanently damage the collet. Full length of the gripping bore must be maintained to achieve maximum accuracy and safety. Collet accuracies are based on size-for-size conditions. Never try to stretch the collets by clamping oversized cutting tools.