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Today I'll tell you how to distinguish between a rotary-air SMD rework station and a straight-air one

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The main difference between them is the nozzle

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Next we remove the nozzle

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The straight-air nozzle is a cylinder

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with many openings at the top

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The top of the rotary-air nozzle is blocked

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There are some sloping metal pieces on the side like fan blades

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As for the straight-air

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The wind can go out directly from the duct

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As for the rotary-air

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It has to be blown out of the slanted metal sheet on the side

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So the wind is not blowing vertically

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It'll be scattered by the metal blades inside

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That's why we call it rotary-air

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If you can't tell whether it is a straight-air one or a rotary-air one

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You can remove the air nozzle and check it.

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So this is the difference between them

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When welding different components,

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I will tell you which one is needed in the later welding course

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The welding effect may be very different

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if you use the wrong one