Impact Bearing spherical roller thrust bearings contain a large number of asymmetrical barrel-shaped rollers, inclined so steeply that the bearing accommodates high axial loads in addition to considerable radial loads at relatively high rotational speeds. The spherical-shaped raceway of the housing washer accommodates misalignment between the shaft and housing. Spherical roller thrust bearings are separable, which allows the shaft washer, cage and roller assembly to be mounted separately from the housing washer. Due to their internal design these bearings need to be lubricated with oil, except under extremely low speeds where grease lubrication is adequate. Applications for this bearing type include column bearings for cranes, heavy worm gears, and screw pumps.
Selected sizes of Impact Bearing spherical roller thrust bearings are available in the “E” design; additional sizes are gradually being introduced into standard production. This design change uses larger rollers and makes better utilization of the internal space, which results in an increase of the basic dynamic load rating and the static load rating when compared to bearings of the original design.
Cage
Spherical roller thrust bearings are designed and produced with steel and brass cages. Each cage design is designated by "J" for steel and "M" for brass cages. See the picture above for cage design construction. Some applications using the "EJ" design may require the use of shaft spacer.
Boundary Dimensions
Boundary dimensions of spherical roller thrust bearings comply with standard ISO 104.
Tolerance
Spherical roller thrust bearings are produced in accordance to ABEC 1 or P0 tolerance class. All of these tolerances comply with standard ISO 492.
Impact Bearing spherical roller thrust bearings contain a large number of asymmetrical barrel-shaped rollers, inclined so steeply that the bearing accommodates high axial loads in addition to considerable radial loads at relatively high rotational speeds. The spherical-shaped raceway of the housing washer accommodates misalignment between the shaft and housing. Spherical roller thrust bearings are separable, which allows the shaft washer, cage and roller assembly to be mounted separately from the housing washer. Due to their internal design these bearings need to be lubricated with oil, except under extremely low speeds where grease lubrication is adequate. Applications for this bearing type include column bearings for cranes, heavy worm gears, and screw pumps.
