SUNON SF11580A-1083HBL.GN SF Series 2400/2850 RPM 80 x 80 x 38 mm 24/31 CFM 115 VAC Ball Bearing Fan - 1 item(s)

in general terms of bearing is a machine element that constrains relative motion and reduces friction between moving parts in cooling fans specifically the purpose of a bearing is to allow the blades to spin around inside the frame as efficiently and reliably as possible but there are so many kinds of them and the pnn bearing hasn't been invented yet so until that happens how do we know the pros and cons of each kind let's kick it off with sleeve bearings the most common bearing type and PC cooling fans the main advantages are easy they are inexpensive and quiet especially at first but they should only be mounted vertically for best results and compared to other bearing types their performance especially over long periods of time is unexceptional a sleeve bearing is what is known as a line contact bearing which means that the contact surface area between its moving parts is actually qui