Sanyo Denki Long life fans make use of a variety of different design improvements which will help extend the product life. Most of these updates are centered around protecting the bearings from unnecessary wear. The most significant change is adding an aluminum frame and bearing housings instead of the traditional plastic frame design. The added metal frame allows for better heat dissipation from the bearings directly by effectively turning the frame into a heat sink. Another added change is a redistribution of bearing load. By increasing the interval between the bearings, the load is evenly distributed between the two bearings to prevent uneven wear. In many cases, Sanyo Denki long life fans use specialty bearings which use custom grease to help facilitate a longer product life. With these advancements, the long life fan series can reach upwards of 200,000 hours of continuous usage in a 60°C ambient environment.