Alternative Design 4

And the fourth alternative design we saw was used by the Thermaltake AF0043 fan, which is sold as hydro dynamic bearing (HDB), not fluid dynamic (FDB). This is a small yet important difference, as the savvy user can assume that HDB fans are not based on Matsushita’s design. It has three grooves alongside the exterior of the bearing, and the exterior of the bearing has a somewhat different shape. Since there is no connection between the grooves and the ends of the bearing, we wonder how these grooves transport lubricant. According to Thermaltake, this bearing is from YS Tech and is called Sintetico. The presentation available is poorly written and it does not explain properly how this bearing works.

hydro dynamic bearingFigure 5: Alternative design 4 (Thermaltake AF0043)


Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.