MC30150V2-000U-A99
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36756075-MC30150V2-000U-A99
Fan 30X30X15mm 5VDC 0.37W 4.8CFM
there are several different types of bearings, including ball and roller bearings, linear bearings, as well as mounted versions that may use either rolling element bearings or plain bearings.
There are three main types of fans used for moving air, axial, centrifugal (also called radial) and cross flow (also called tangential).