ER-40 Collets

Accu-Collets ER COLLETS
AccuCollets™ Precision and UltraPrecision Collets DIN 6499-form B (ER) set new standards of accuracy.
Precision Collets concentricity is 15 microns or 0.0005" TIR or better
Ultra Precision Collets is 6 microns or 0.0002" TIR or better

• Concentricity is 13 microns or 0.0005" TIR or better
• Manufactured with Swiss technology
• Crafted from high quality European alloy spring steel
• TRUE INCH and metric sizes
• Fractional Collets manufactured specifically for US market requirements. Use "on size" collets for best results
• 16 slot construction for rigid clamping and extra concentricity
• Accu-Collets improve tool life, part finish and reduces spindle wear
• Can be used for drilling, milling, tapping and reaming

Precision ER Collets 0.0005" TIR or better as measured over the entire clamping range per DIN 6499 Standards

ON SIZE		Nominal Size			Precision	Ultra Precision
Frac	MM	Dec.	Range	Nominal Sizes Covered
3/64	-	0.047	0.046-0.026	3/64, 1/16, 5/64	40-0047-3/64 Add
1/16	-	0.062	0.062-0.042	1/16, 3/64	40-0063-1/16 Add
5/64	-	0.078	0.078-0.058	5/64, 3/32, 7/64	40-0078-5/64 Add
3/32	-	0.093	0.093-0.054	3/32, 5/64, 1/16	40-0094-3/32 Add
-	2.5	0.098	0.098-0.079	7/64, 1/8	40-0098-2.5 Add
7/64	-	0.109	0.109-0.089	7/64, 1/8	40-0109-7/64 Add
-	3.0	0.118	0.118-0.079	7/64, 3/32	40-0118-3.0 Add
1/8	-	0.125	0.125-0.085	1/8, 7/64	40-0125-1/8 Add	40-0125-1/8UP Add
-	3.5	0.138	0.138-0.118	5/32, 11/64	40-0138-3.5 Add	40-0138-3.5UP Add
9/64	-	0.141	0.140-0.120	5/32, 11/64	40-0140-9/64 Add	40-0140-9/64UP Add
5/32	-	0.156	0.156-0.117	5/32, 9/64, 1/8	40-0156-5/32 Add	40-0156-5/32UP Add
-	4.0	0.157	0.157-0.118	5/32, 9/64	40-0157-4.0 Add	40-0157-4.0UP Add
11/64		0.172	0.171-0.151	3/16, 13/64	40-0171-11/64 Add	40-0171-11/64UP Add
-	4.5	0.177	0.177-0.158	3/16, 13/64	40-0177-4.5 Add	40-0177-4.5UP Add
3/16	-	0.187	0.187-0.148	3/16, 11/64	40-0187-3/16 Add	40-0187-3/16UP Add
-	5.0	0.196	0.196-0.157	3/16, 11/64	40-0196-5.0 Add	40-0196-5.0UP Add
13/64	-	0.203	0.203-0.183	13/64, 7/32, 15/64	40-0203-13/64 Add	40-0203-13/64UP Add
-	5.5	0.217	0.217-0.197	7/32, 15/64, 1/4	40-0216-5.5 Add	40-0216-5.5UP Add
7/32	-	0.218	0.218-0.179	7/32, 13/64	40-0218-7/32 Add	40-0218-7/32UP Add
15/64	-	0.234	0.234-0.214	15/64, 1/4, 17/64	40-0234-15/64 Add	40-0234-15/64UP Add
-	6.0	0.236	0.236-0.197	15/64, 7/32	40-0236-6.0 Add	40-0236-6.0UP Add
1/4	-	0.250	0.250-0.211	1/4, 15/64, 7/32	40-0250-1/4 Add	40-0250-1/4UP Add
-	6.5	0.256	0.256-0.236	17/64, 9/32	40-0256-6.5 Add	40-0256-6.5UP Add
17/64	-	0.266	0.265-0.245	9/32, 19/64	40-0265-17/64 Add	40-0265-17/64UP Add
-	7.0	0.275	0.275-0.236	17/64, 1/4	40-0275-7.0 Add	40-0275-7.0UP Add
9/32	-	0.281	0.281-0.242	9/32, 17/64	40-0281-9/32 Add	40-0281-9/32UP Add
-	7.5	0.295	0.295-0.256	19/64, 5/16, 21/64	40-0296-7.5 Add	40-0296-7.5UP Add
19/64	-	0.297	0.296-0.257	5/16, 21/64	40-0296-19/64 Add	40-0296-19/64UP Add
5/16	-	0.312	0.312-0.273	5/16, 19/64, 9/32	40-0312-5/16 Add	40-0312-5/16UP Add
-	8.0	0.315	0.315-0.276	5/16, 19/64	40-0315-8.0 Add	40-0315-8.0UP Add
21/64	-	0.328	0.328-0.289	21/64, 11/32, 23/64	40-0328-21/64 Add	40-0328-21/64UP Add
-	8.5	0.335	0.335-0.295	11/32, 23/64	40-0334-8.5 Add	40-0334-8.5UP Add
11/32	-	0.343	0.343-0.304	11/32, 21/64	40-0343-11/32 Add	40-0343-11/32UP Add
-	9.0	0.354	0.354-0.315	11/32, 21/64	40-0354-9.0 Add	40-0354-9.0UP Add
23/64	-	0.359	0.359-0.320	23/64, 3/8, 25/64	40-0359-23/64 Add	40-0359-23/64UP Add
3/8	-	0.375	0.375-0.336	3/8, 23/64	40-0375-3/8 Add	40-0375-3/8UP Add
25/64	-	0.391	0.390-0.351	13/32, 27/64	40-0390-25/64 Add	40-0390-25/64UP Add
-	10.0	0.393	0.393-0.354	25/64, 3/8	40-0393-10.0 Add	40-0393-10.0UP Add
13/32	-	0.406	0.406-0.367	13/32, 25/64, 3/8	40-0406-13/32 Add	40-0406-13/32UP Add
-	10.5	0.413	0.413-0.374	27/64, 7/16	40-0413-10.5 Add	40-0413-10.5UP Add
27/64	-	0.422	0.421-0.382	7/16, 29/64	40-0421-27/64 Add	40-0421-27/64UP Add
-	11.0	0.433	0.433-0.394	27/64, 13/32	40-0433-11.0 Add	40-0433-11.0UP Add
7/16	-	0.437	0.437-0.398	7/16, 27/64	40-0437-7/16 Add	40-0437-7/16UP Add
29/64	-	0.453	0.453-0.414	29/64, 15/32, 31/64	40-0453-29/64 Add	40-0453-29/64UP Add
15/32	-	0.468	0.468-0.429	15/32, 29/64, 7/16	40-0468-15/32 Add	40-0468-15/32UP Add
-	12.0	0.472	0.472-0.433	15/32, 29/64	40-0472-12.0 Add	40-0472-12.0UP Add
31/64	-	0.484	0.484-0.445	31/64, 1/2, 33/64	40-0484-31/64 Add	40-0484-31/64UP Add
-	12.5	0.492	0.492-0.453	1/2, 33/64	40-0492-12.5 Add	40-0492-12.5UP Add
1/2	-	0.500	0.500-0.461	1/2, 31/64	40-0500-1/2 Add	40-0500-1/2UP Add
-	13.0	0.511	0.511-0.472	1/2, 31/64	40-0511-13.0 Add	40-0511-13.0UP Add
33/64	-	0.516	0.515-0.476	17/32, 35/64	40-0515-33/64 Add	40-0515-33/64UP Add
17/32	-	0.531	0.531-0.492	17/32, 33/64	40-0531-17/32 Add	40-0531-17/32UP Add
35/64	-	0.547	0.546-0.507	9/16, 37/64	40-0546-35/64 Add	40-0546-35/64UP Add
-	14.0	0.551	0.551-0.512	35/64, 17/32	40-0551-14.0 Add	40-0551-14.0UP Add
9/16	-	0.562	0.562-0.523	9/16, 35/64, 17/32	40-0562-9/16 Add	40-0562-9/16UP Add
-	14.5	0.571	0.571-0.532	37/64, 19/32, 39/64	40-0570-14.5 Add	40-0570-14.5UP Add
37/64	-	0.578	0.578-0.539	37/64, 19/32, 39/64	40-0578-37/64 Add	40-0578-37/64UP Add
-	15.0	0.590	0.590-0.551	37/64, 9/16	40-0590-15.0 Add	40-0590-15.0UP Add
19/32	-	0.593	0.593-0.554	19/32, 37/64	40-0593-19/32 Add	40-0593-19/32UP Add
39/64	-	0.609	0.609-0.570	39/64, 5/8, 41/64	40-0609-39/64 Add	40-0609-39/64UP Add
-	15.5	0.610	0.601-0.571	5/8, 41/64	40-0610-15.5 Add	40-0610-15.5UP Add
5/8	-	0.625	0.625-0.586	5/8, 39/64, 19/32	40-0625-5/8 Add	40-0625-5/8UP Add
-	16.0	0.630	0.630-0.591	5/8, 39/64	40-0630-16.0 Add	40-0630-16.0UP Add
41/64	-	0.641	0.641-0.602	21/32, 43/64	40-0640-41/64 Add	40-0640-41/64UP Add
-	16.5	0.650	0.650-0.610	21/32, 43/64, 11/16	40-0650-16.5 Add	40-0650-16.5UP Add
21/32	-	0.656	0.656-0.617	21/32, 41/64	40-0656-21/32 Add	40-0656-21/32UP Add
-	17.0	0.669	0.669-0.630	21/32, 41/64	40-0669-17.0 Add	40-0669-17.0UP Add
43/64	-	0.672	0.672-0.633	11/16, 46/64	40-0671-43/64 Add	40-0671-43/64UP Add
11/16	-	0.687	0.687-0.648	11/16, 43/64, 21/32	40-0687-11/16 Add	40-0687-11/16UP Add
-	17.5	0.689	0.689-0.650	45/64, 23/32	40-0689-17.5 Add	40-0689-17.5UP Add
45/64	-	0.703	0.703-0.664	45/64, 23/32, 47/64	40-0703-45/64 Add	40-0703-45/64UP Add
-	18.0	0.708	0.708-0.669	45/64, 11/16	40-0708-18.0 Add	40-0708-18.0UP Add
23/32	-	0.718	0.718-0.679	23/32, 45/64	40-0718-23/32 Add	40-0718-23/32UP Add
-	18.5	0.728	0.728-0.689	47/64, 3/4, 49/64	40-0728-18.5 Add	40-0728-18.5UP Add
47/64	-	0.734	0.734-0.695	47/64, 3/4, 49/64	40-0734-47/64 Add	40-0734-47/64UP Add
-	19.0	0.748	0.748-0.709	47/64, 23/32	40-0748-19.0 Add	40-0748-19.0UP Add
3/4	-	0.750	0.750-0.711	3/4, 47/64	40-0750-3/4 Add	40-0750-3/4UP Add
49/64	-	0.766	0.766-0.727	25/32, 51/64	40-0765-49/64 Add	40-0765-49/64UP Add
-	19.5	0.768	0.768-0.728	25/32, 51/64	40-0767-19.5 Add	40-0767-19.5UP Add
25/32	-	0.781	0.781-0.742	25/32, 49/64, 3/4	40-0781-25/32 Add	40-0781-25/32UP Add
-	20.0	0.787	0.787-0.748	25/32, 49/64	40-0787-20.0 Add	40-0787-20.0UP Add
51/64	-	0.797	0.797-0.758	51/64, 13/16, 53/64	40-0796-51/64 Add	40-0796-51/64UP Add
-	20.5	0.807	0.807-0.768	13/16, 53/64, 37/32	40-0807-20.5 Add	40-0807-20.5UP Add
13/16	-	0.813	0.813-0.783	13/16, 53/64, 37/32	40-0812-13/16 Add	40-0812-13/16UP Add
-	21.0	0.826	0.826-0.787	13/16, 51/64	40-0826-21.0 Add	40-0826-21.0UP Add
53/64	-	0.828	0.828-0.789	53/64, 37/32, 55/64	40-0828-53/64 Add	40-0828-53/64UP Add
27/32	-	0.843	0.843-0.804	27/32, 53/64, 13/16	40-0843-27/32 Add	40-0843-27/32UP Add
-	21.5	0.846	0.846-0.807	55/64, 7/8	40-0846-21.5 Add	40-0846-21.5UP Add
55/64	-	0.859	0.859-0.820	55/64, 7/8, 57/64	40-0859-55/64 Add	40-0859-55/64UP Add
-	22.0	0.866	0.866-0.827	55/64, 27/32	40-0866-22.0 Add	40-0866-22.0UP Add
7/8	-	0.875	0.875-0.836	7/8, 55/64	40-0875-7/8 Add	40-0875-7/8UP Add
-	22.5	0.886	0.886-0.847	57/64, 29/32	40-0886-22.5 Add	40-0886-22.5UP Add
57/64	-	0.891	0.891-0.852	57/64, 29/32, 59/64	40-0890-57/64 Add	40-0890-57/64UP Add
-	23.0	0.905	0.905-0.866	57/64, 7/8	40-0905-23.0 Add	40-0905-23.0UP Add
29/32	-	0.906	0.906-0.867	29/32, 57/64	40-0906-29/32 Add	40-0906-29/32UP Add
59/64	-	0.922	0.922-0.883	59/64, 15/16, 61/64	40-0921-59/64 Add	40-0921-59/64UP Add
-	23.5	0.925	0.925-0.886	15/16, 61/64	40-0925-23.5 Add	40-0925-23.5UP Add
15/16	-	0.937	0.937-0.898	15/16, 59/64, 29/32	40-0937-15/16 Add	40-0937-15/16UP Add
-	24.0	0.944	0.944-0.905	15/16, 59/64	40-0944-24.0 Add	40-0944-24.0UP Add
61/64	-	0.953	0.953-0.911	61/64, 31/32, 63/64	40-0953-61/64 Add	40-0953-61/64UP Add
-	24.5	0.965	0.965-0.925	31/32, 63/64, 1	40-0965-24.5 Add	40-0965-24.5UP Add
31/32	-	0.968	0.968-0.929	31/32, 61/64	40-0968-31/32 Add	40-0968-31/32UP Add
-	25.0	0.984	0.984-0.945	31/32, 61/64	40-0984-25.0 Add	40-0984-25.0UP Add
63/64	-	0.984	0.984-0.945	63/64, 1, 1-1/64	40-0985-63/64 Add	40-0985-63/64UP Add
1"	-	1.000	1.000-0.961	1, 63/64, 31/32	40-1000-1-IN Add	40-1000-1-INUP Add
1-1/64	-	1.016	1.016-0.977	1-1/64, 63/64	40-1016-1-1/64 Add	40-1016-1-164UP Add
-	26.0	1.024	1.024-0.984	1-1/64	40-1024-26.0 Add	40-1024-26.0UP Add