Air-Cooled or Water-Cooled … Which Is Better?

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A spindle is the key component of any CNC router, which operators use to perform high-speed milling, drilling, engraving, and other such operations on their benchtop CNC mill. However, as the electric spindle rotates at a high speed to deliver such results, it needs to be cooled down to maintain performance. Ignoring this issue can lead to grave consequences for the machine shop and the specific CNC machine — from decreased service life to complete burnout of the component. Air cooling and water cooling are two of the most common cooling systems that come to play in such situations. But which of these techniques is more efficient and effective? And which one should you choose? Let’s analyze.

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