iHSV86-30-66-72 - cover - splash guard - intake fan.
This are covers (cover-parts) for the “iHSV86-30-66-72”
in its function as motors for a high-end milling machine.
There are different covers for the motors cause of their different location/installation direction depending on x-,y- and z-axis.
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The author hasn't provided the model origin yet.