ER-25 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
| ON SIZE | Nominal Size | Precision | Ultra Precision | |||
| Frac | MM | Dec. | Range | Nominal Sizes Covered | ||
| 1/16 | - | 0.062 | 0.062-0.042 | 1/16,3/64 | 25-0062-1/16 | |
| 5/64 | - | 0.078 | 0.078-0.058 | 5/64,1/16 | 25-0078-5/64 | 25-0078-5/64UP |
| - | 2.0 | 0.079 | 0.079-0.040 | 5/64,1/16 | 25-0079-2.0 | 25-0079-2.0UP |
| 3/32 | - | 0.093 | 0.093-0.054 | 3/32, 5/64, 1/16 | 25-0093-3/32 | 25-0093-3/32UP |
| 7/64 | - | 0.109 | 0.109-0.089 | 7/64, 3/32 | 25-0109-7/64 | 25-0109-7/64UP |
| - | 3.0 | 0.118 | 0.118-0.079 | 7/64, 3/32 | 25-0118-3.0 | 25-0118-3.0UP |
| 1/8 | - | 0.125 | 0.125-0.086 | 1/8, 7/64 | 25-0125-1/8 | 25-0125-1/8UP |
| 9/64 | - | 0.140 | 0.140-0.120 | 9/64, 1/8 | 25-0140-9/64 | 25-0140-9/64UP |
| 5/32 | - | 0.156 | 0.156-0.117 | 5/32, 9/64, 1/8 | 25-0156-5/32 | 25-0156-5/32UP |
| - | 4.0 | 0.157 | 0.157-0.118 | 5/32, 9/64 | 25-0157-4.0 | 25-0157-4.0UP |
| 11/64 | 0.171 | 0.171-0.151 | 11/64, 5/32 | 25-0171-11/64 | 25-0171-11/64UP | |
| 3/16 | - | 0.187 | 0.187-0.148 | 3/16, 11/64 | 25-0187-3/16 | 25-0187-3/16UP |
| - | 5.0 | 0.196 | 0.196-0.157 | 3/16, 11/64 | 25-0196-5.0 | 25-0196-5.0UP |
| 13/64 | - | 0.203 | 0.203-0.183 | 13/64, 3/16 | 25-0203-13/64 | 25-0203-13/64UP |
| 7/32 | - | 0.218 | 0.218-0.179 | 7/32, 13/64 | 25-0218-7/32 | 25-0218-7/32UP |
| 15/64 | - | 0.234 | 0.234-0.214 | 15/64, 7/32 | 25-0234-15/64 | 25-0234-15/64UP |
| - | 6.0 | 0.236 | 0.236-0.197 | 15/64, 7/32 | 25-0236-6.0 | 25-0236-6.0UP |
| 1/4 | - | 0.250 | 0.250-0.211 | 1/4, 15/64, 7/32 | 25-0250-1/4 | 25-0250-1/4UP |
| 17/64 | - | 0.265 | 0.265-0.245 | 17/64, 1/4 | 25-0265-17/64 | 25-0265-17/64UP |
| - | 7.0 | 0.275 | 0.275-0.236 | 17/64, 1/4 | 25-0275-7.0 | 25-0275-7.0UP |
| 9/32 | - | 0.281 | 0.281-0.242 | 9/32, 17/64 | 25-0281-9/32 | 25-0281-9/32UP |
| 19/64 | - | 0.296 | 0.296-0.257 | 19/64, 9/32 | 25-0296-19/64 | 25-0296-19/64UP |
| 5/16 | - | 0.312 | 0.312-0.273 | 5/16, 19/64, 9/32 | 25-0312-5/16 | 25-0312-5/16UP |
| - | 8.0 | 0.315 | 0.315-0.276 | 5/16, 19/64 | 25-0315-8.0 | 25-0315-8.0UP |
| 21/64 | - | 0.328 | 0.328-0.289 | 21/64, 5/16, 19/64 | 25-0328-21/64 | 25-0328-21/64UP |
| 11/32 | - | 0.343 | 0.343-0.304 | 11/32, 21/64 | 25-0343-11/32 | 25-0343-11/32UP |
| - | 9.0 | 0.354 | 0.354-0.315 | 11/32, 21/64 | 25-0354-9.0 | 25-0354-9.0UP |
| 23/64 | - | 0.359 | 0.359-0.320 | 23/64, 11/32 | 25-0359-23/64 | 25-0359-23/64UP |
| 3/8 | - | 0.375 | 0.375-0.336 | 3/8, 23/64 | 25-0375-3/8 | 25-0375-3/8UP |
| 25/64 | - | 0.390 | 0.390-0.351 | 25/64, 3/8, 23/64 | 25-0390-25/64 | 25-0390-25/64UP |
| - | 10.0 | 0.393 | 0.393-0.354 | 25/64, 3/8 | 25-0393-10.0 | 25-0393-10.0UP |
| 13/32 | - | 0.406 | 0.406-0.367 | 13/32, 25/64, 3/8 | 25-0406-13/32 | 25-0406-13/32UP |
| 27/64 | - | 0.421 | 0.421-0.382 | 27/64, 13/32 | 25-0421-27/64 | 25-0421-27/64UP |
| - | 11.0 | 0.433 | 0.433-0.394 | 27/64, 13/32 | 25-0433-11.0 | 25-0433-11.0UP |
| 7/16 | - | 0.437 | 0.437-0.398 | 7/16, 27/64 | 25-0437-7/16 | 25-0437-7/16UP |
| 29/64 | - | 0.453 | 0.453-0.414 | 29/64, 7/16 | 25-0453-29/64 | 25-0453-29/64UP |
| 15/32 | - | 0.468 | 0.468-0.429 | 15/32, 29/64, 7/16 | 25-0468-15/32 | 25-0468-15/32UP |
| - | 12.0 | 0.472 | 0.472-0.433 | 15/32, 29/64 | 25-0472-12.0 | 25-0472-12.0UP |
| 31/64 | - | 0.484 | 0.484-0.445 | 31/64, 15/32 | 25-0484-31/64 | 25-0484-31/64UP |
| 1/2 | - | 0.500 | 0.500-0.461 | 1/2, 31/64 | 25-0500-1/2 | 25-0500-1/2UP |
| - | 13.0 | 0.511 | 0.511-0.472 | 1/2, 31/64 | 25-0511-13.0 | 25-0511-13.0UP |
| 33/64 | - | 0.515 | 0.515-0.476 | 33/64, 1/2 | 25-0515-33/64 | 25-0515-33/64UP |
| 17/32 | - | 0.531 | 0.531-0.492 | 17/32, 33/64 | 25-0531-17/32 | 25-0531-17/32UP |
| 35/64 | - | 0.546 | 0.546-0.507 | 35/64, 17/32 | 25-0546-35/64 | 25-0546-35/64UP |
| - | 14.0 | 0.551 | 0.551-0.512 | 35/64, 17/32 | 25-0551-14.0 | 25-0551-14.0UP |
| 9/16 | - | 0.563 | 0.562-0.523 | 9/16, 35/64, 17/32 | 25-0562-9/16 | 25-0562-9/16UP |
| 37/64 | - | 0.578 | 0.578-0.539 | 37/64, 9/16 | 25-0578-37/64 | 25-0578-37/64UP |
| - | 15.0 | 0.591 | 0.590-0.551 | 37/64, 9/16 | 25-0590-15.0 | 25-0590-15.0UP |
| 19/32 | - | 0.594 | 0.593-0.554 | 19/32, 37/64 | 25-0593-19/32 | 25-0593-19/32UP |
| 39/64 | - | 0.609 | 0.609-0.570 | 39/64, 19/32 | 25-0609-39/64 | 25-0609-39/64UP |
| 5/8 | - | 0.625 | 0.625-0.586 | 5/8, 39/64, 19/32 | 25-0625-05/8 | 25-0625-05/8UP |
| - | 16.0 | 0.630 | 0.630-0.591 | 5/8, 39/64 | 25-0630-16.0 | 25-0630-16.0UP |