The four-row cylindrical roller bearing is mainly used as the most important roll bearing in metallurgical equipment. It features compact structure, high stiffness, and high bearing capacity, so it is widely used as rolling mill bearing

The cylindrical roller bearing belongs to the separable bearing,which is easy to assemble and disassemble. According to the row number of rollers, the cylindrical roller bearings can be classified into single-row, double-row, four-row, and full-complement cylindrical roller bearings. The cylindrical roller bearings can bear high radial loads and are applicable for high-acceleration and high-speed rotation cases.