When using the water-cooled spindles, the collet and nut must be assembled correctly otherwise, numerous issues can occur. Issues such as threads stripping, the bit being pulled out of the collet during a file, as well as struggling to remove the bit at the end of the file.
| Collet Size | Collet | Collet Clamping Nut | |
| 3HP 2.2KW Spindle motor | ER20 | ||
| 2HP 1.5KW Spindle Motor | ER11 |
Collet, clamping nut, and bit assembly:
| Push the wide channeled end of the collet into the clamping nut. | |
| The collet will snap into the clamping nut. If you flip the collet and clamping nut upside down, the collet will not fall out. | |
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Thread the assembled collet and clamping nut onto the first few threads of the spindle shaft. Insert your desired bit into the collet. Finish tightening by hand. |
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Using the wrenches that came with your Spindle kit, hold the spindle shaft in place and tighten the clamping nut down.
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| Example of incorrect assembly: the collet is upside down in the collet clamping nut resulting in very few threads holding the assembly together and limited tightening ability. | |
| Example of incorrect assembly: Inserting the collet into the spindle shaft first will prevent the collet from snapping into place in the clamping nut. |