Spherical roller bearings have two rows of rollers, the outer ring has a common spherical raceway, there are two inner raceway, and the bearing axis into a certain angle. The center point of the outer raceway is located on the bearing axis. Therefore, the bearing is a self-aligning bearing, the shaft and the bearing seat between the misalignment error, which may be caused by the axis deviation and other factors. The spherical roller bearings are well designed, in addition to the high radial load, but also bear the heavy axial load in two directions.
Bearing performance is not only determined by the load or rated speed, many other factors also affect the performance of the bearing. The performance of the bearing is to a large extent affected by the following factors: roller, raceway and cage geometry, heat treatment and surface finish of all contact surfaces. The main factors affecting the performance of SKF spherical roller bearings include but are not limited to:
Symmetrical roller
Self aligning roller symmetrical, can optimize the load distribution of the roller. In this way, the roller bearing under the conditions of all the stress is low, thus extending the bearing life.
Roller tolerance
The size and shape of SKF spherical roller bearings are produced in a minimum tolerance. The size and shape of each roller in the same group are basically the same. This can optimize the load distribution on the roller to maximize the service life of the bearing.
Special roller shape
The stress distribution of the roller / raceway contact area is determined by the roller shape. The special shape makes the load distribution on the roller more uniform, so as to prevent the stress peak of the roller end, so as to prolong the service life of the bearing.
A self guided roller and a floating guide ring are arranged between the two rollers
Self guided roller can reduce the heat generated by friction and friction. The floating guide rings guide the non loaded rollers so that they enter the loading area at the best location.