The spherical roller bearing was invented by engineer Arvid Palmgren[3] and was introduced on the market 1919 by SKF.
For large-volume bearings, cages are often of stamped sheet-metal or injection molded polyamide, whereas low volume manufacturers or low volume series often have cages of machined brass or machined steel.
Some manufacturers of spherical roller bearings are SKF, Schaeffler, Timken Company, NSK Ltd., NTN Corporation and JTEKT.
This has been possible by playing with a palette of parameters such as materials, internal geometry, tolerance and lubricant.
Spherical bearings are used in countless industrial applications where there are heavy loads, moderate speeds and possibly misalignment.