Spherical roller bearings are used in centrifugal pump applications having heavy loads. These bearings are used for their high load capabilities and their ability to operate in misaligned conditions. Spherical roller bearings are produced as standard with steel cages. Spherical roller bearings are most commonly used in applications having low operating speeds. These bearings can be used at incresed speeds provided the lubrication and cooling are satisfactory. Spherical roller bearings are principally provided with two rows of symmetrical spherical rollers and a common sphere raceway in out ring, the two inner ring raceways are included at an angle to the bearing axial. The bearings have good self-aligning ability and can operate when the shaft deflection under load or the shaft deflection under load or the shaft misalignment in mounting, and their permissible aligning angle is 1 to 2.5 degree. This type of bearings has heavy load carrying capacity and anti-impact ability, in addition to radial loads; they also can carry axial loads in two directions. In general, this type of bearings permits a low limiting speed.
Spherical tanks are designed for pressurized storage of condensed hydrocarbon gases and liquid products of chemical productions. The unit of spherical tanks comprises one or two sphere bodies positioned on vertical supports. Maintenance platforms connected to common stairs by means of bridges are located at the top of the tank. If required, the coil-tibe heater is provided at the bottom part .The unit of gasholder comprises one sphere body. Bodies of tanks and gasholders are supplied disassembled; metal works come as separate units.