Spherical roller thrust bearings are able to carry high axial load. Because of their construction with spherical raceways and transmission of load at a certain angle they can carry radial load as well. They are dismountable which allows simpler installation of individual rings into the arrangement.
Design of the individual parts of the spherical roller thrust bearings allows in operation certain mutual misalignment of the rings against each other. In this way the spherical roller thrust bearings are able to eliminate certain deflection of the connecting parts.
Spherical roller thrust bearings have a great number of asymmetrical spherical rollers with a good conformity to the raceway and therefore they are able to carry high axial load. Spherical roller thrust bearings can be applied in arrangements with high demands for load forces transfer, e.g. shaping machines, cranes, ship’s shaft, mining machines, etc. Design Specification:
The main dimensions of double row spherical roller bearings specified in the dimension tables are in accordance with the international standards ISO 104.
Spherical roller thrust bearings are commonly manufactured with brass cage guided by a sleeve held in the shaft washer bore. Designation of these bearings is „MC” Another manufactured design is spherical roller thrust bearing with pressed window-type steel cage. Their designation is „EJ”.
Spherical roller thrust bearings are produced in standard P0 tolerance class. Production of bearings with a higher tolerance class should be discussed with the manufacturer in advance.
Influence of the Operating Temperature
Spherical roller thrust bearings undergo special heat treatment, which enables their application at high temperatures up to 200°C without any change of dimensions.
Because of their design spherical roller thrust bearings allow mutual misalignment, i.e. at common operating conditions (Pa ≤ 0,1.Ca) they are able to accommodate the misalignment of the shaft and housing without affecting their correct function. Permitted misalignment is stated in the table: