Durable LDB Bearing
Cooler Master 120mm Silencio FP fan combines sealed LDB bearings with quiet fan blades, offering a long lifetime of quiet cooling.
A: The groove outside of the bearing helps to circulate the oil
B: Sealant on the bobbin ensures the highest level of dustproof - IP6X
C: Recycle slot adds extra storage space for the oil
D: The shaft makes the oil flow by pumping it while spinning