The bearings are often used for sparsely populated areasand other places with poor environments. In this environment, failure of any device will affect the overall situation. This requires the bearings for mining machinery must be superb in durability and reliability. According to the characteristics of the industry, ZZ Bearings has launched long service life and high quality bearings which can work at high pollution and high load conditions to contribute to reduce costs for maintenance of equipment working in such harsh conditions of mine site.