The carbon graphite bearing is widely used in the conditions that the oil lubricants are not permitted during the bearing's operation, such as in the transports in industrial sectors like submersible pump motors, driers in the paper-producing industry, bearing used in man-made textile machines, cigarette manufacturing devices, as well as food, textile and chemicals. For the oil lubricants may inevitably cause contamination. While, the carbon graphite bearing is able to operate for long without lubricants for its strong self-lubricant capability. And for the great advantage of making wear-resistant parts, the carbon graphite bearing is widely used in manufacturing bearing works.