When the head is moving in the X-axis it makes noise.
I think this type of fans is not suitable for rapid movement and rapid changes in directions.
I think the noise is coming from the axial of the fan because I think there is a clearance in the axial for moving up and down.
When I put my finger on the fan body(the rotating part) the noise stop!
My question, What type of fans suitable for rapid movement and rapid direction change? and if this is not the problem what is the problem in my situation?
I have tried searching but I can really find a direct answer!