paired bearings

According to FAG N11CA regulations, backing bearings earings arranged on the X-type configuration. Bearing on the axial clearance between the spacer through the outer set; its value by a suffix, for example A80.120 represents a pair of bearings before installing the axial clearance of 80 ~ 120μ m. Paired bearing operating speed than can be achieved by a single bearing calculated to allow low speed about 20%. If the bearing to provide a very comprehensive cooling conditions, bearing speed can reach the speed limit. In order paired tapered roller bearings, please give the number of single bearing, rather than bearing the number of pairs.