F Series - HF Router Maintenance and Adjustment of Spindle Collet

Modified on Tue, 14 May at 7:42 PM

The video link explains how to clean and adjust the HF collet on the HF milling motor.

Collet setting process: 

In the system 4041 DC-S with collet C4, the collet set process is as follows: 

  1. Apply compressed air
  2. Screw in the collet with inserted tool or c-lock pin
  3. Adjust the stroke by loosening the collet ½ turn
  4. Insert and tighten the set screw to prevent the collet from turning 
  5. Insert the tool 
  6. Stop compressed air supply 

Attention: The collet is not protected against rotation/loosening if the set screw is not firmly tightened.  


  • Clean the collet every week and insert it according to the set process.
  • During yearly maintenance, replace the collet to ensure maximum clamping power.


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