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. Sealant on the The groove outside of the bearing helps to circulate the oil
B. Sealant on the bobbin and featuring the highest dustproof level IP6X
C. Recycle slot adds extra storage space for the oil
D. The shaft makes the oil flow by pumping it while spinning