Cylindrical roller thrust bearings
Cylindrical roller thrust bearings have simple component shapes, what make them easy to use in various combinations, with or without bearings rings or by creating a raceway in the connecting components.
Cylindrical roller thrust bearings are used in arrangements, where other thrust bearings designs have insufficient load carrying capacity. Cylindrical roller thrust bearings can carry axial load only.
Cylindrical roller thrust bearings main dimensions specified in the dimension tables are in accordance with the international standard ISO 104.
Cylindrical roller thrust bearings series 811 and 812 have usually three parts – cylindrical roller thrust cage, shaft washer (WS) and housing washer (GS). The most important part is a bearing cage (K811, K812). If the front surfaces of connecting components are produced in sufficient tolerance, it is possible to use them as raceways and to use only cylindrical roller thrust cage for acting forces transmission. A significant saving of the housing area is possible in this arrangement.
Cylindrical roller thrust bearings are produced as standard in tolerance class P0. Production of bearings with higher tolerance should be discussed in advance. The dimension tolerances are in accordance with the international standards and are stated in the table part of this catalogue.
Design of bearing associated components
The support surfaces in the housing and on the shaft provide support for the bearing washers across the whole extent and width of the raceways. Hardness of housing and shaft raceways for thrust bearing cages without washers should be 58-64 HRC. Dimension and shape tolerance of raceways has to comply with the figures in table part of this catalogue dedicated to thrust bearings rings (tab. 20).
Cylindrical roller thrust bearing cages are produced of glass fiber reinforced polyamide 6.6 (designation TNG) or brass (without designation). Specific design for individual part numbers is specified in table part.
Equivalent dynamic load
Pa = Fa
Equivalent static load
If static load is applied to the cylindrical bearing, then:
Poa = Fa
The limiting speed specified in this catalogue represents the maximum number of revolutions acceptable for bearing to be able to operate trouble-free at certain safety level.