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Cylindrical roller bearing belongs to separation type bearing which installation and removal is very convenient. According to the columns of the roller bearing, cylindrical roller bearing can be divided into single row, double rows and column cylindrical rollers bearing. A single frame cylindrical roller bearings is the most widely used. In addition, there are single row or double rows and other structures of the cylindrical roller bearings full pack rollers. Cylindrical roller bearing can withstand a huger radial direction load and it is suitable for high speed running applications.