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Product Description
This fan is designed to blow away the chips accumulating on top of a work surface that is being 2D or 3D "dry" milled. I made the original for use on my desktop mill with a spindle speed of 10k RPM. This particular fan is designed for an ER-20 collet with 30 mm nut. The 'prop-nut' (propeller nut) isn't actually a nut itself, but press-fits onto the exterior of the collet nut. Fan blades are designed to generate downdraft while rotating clockwise (and thereby forcing the prop-nut to stay on the collet nut). These fans have not been tested beyond 10k RPM, use at your own risk.
OD of this fan is 90mm
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