XR series of crossed tapered roller bearings within the small space is designed to provide high rotation accuracy and stiffness, is cheaper than the cost of materials. Two sets of bearings this type of bearing is raceways and rollers installed in the rectangular cross together, adjacent rollers reverse direction, isolation block is installed between the roller and the roller, roller was also equipped with supporting gaskets, making two half lierong of the rollers into the same space. Bearing angle and conical geometry makes the effective span of bearing several times larger than the actual width of the bearing itself.
XR series bearings are suitable for high speed machine tool applications, such as vertical boring machine and vertical grinding machine. Especially suitable for many space is limited, equipment with high rotation accuracy requirements.