The raceway of the housing washer of this bearing type is spherical with the center of the radius located on the bearing axis. The design provides the self-alignment capability to the bearing. The Contact angle is approximately 45° enabling the bearing to support the axial load and a small to moderate amount of radial load.
Nachi Spherical Roller Thrust bearings can sustain high loads at low-to-moderate speeds. Because of the large load capacity and self-aligning characteristics, this bearing type is often used for injection molding machines, crane hooks, and other large machines. Cages are made from machined, high-strength brass or pressed steel.
The mounting and dismounting of Spherical roller bearings are facilitated through the use of tapered-bore bearings in conjunction with tapered journals, or adapters or withdrawal sleeves. Internal clearance can also be precisely set using a tapered bore bearing. Pressed steel cages are used for Smallbore bearings and machined, high-strength brass or mild-steel cages are used for bearings with larger bores.
