"24V DC Cooling Fan" nano-ceramic bearings (NANO Ceramic Bearing, NCB), in essence, is still a sleeve bearing is determined by Foxconn in their products first introduced. Traditional oil-bearing fan in the course of serious wear and tear, the lower the reliability of prolonged use. "24V DC Cooling Fan" nano-bearing effectively overcome this problem: ceramic bearing technology uses a special polymer materials and the full integration of special additives, bearing core Opteron dioxide comprehensive special material made using die and sintering process, crystal particles from the past 60um down to 0.3um, a firm, smooth, wear-resistant properties. Nano-ceramic bearings have a strong high temperature capability, less volatile, which greatly extends the life of the fan, nano-ceramic bearings of a similar nature, the more wear more smooth. According to tests, the use of nano-ceramic bearings "24V DC Cooling Fan" in more than the average life of 150,000 hours. This technology is in fact not true nanotechnology, materials used is not truly nano scale materials, but is using words such as nano to attract the eye only.