Editing Rolling-element bearing (section)

====Spherical roller====
[[File:Spherical-roller-bearing double-row din635-t2 120.png|left|thumb|100px|A spherical roller bearing]]
{{main|Spherical roller bearing}}

Spherical roller bearings have an outer race with an internal spherical shape. The rollers are thicker in the middle and thinner at the ends. Spherical roller bearings can thus accommodate both static and dynamic misalignment. However, spherical rollers are difficult to produce and thus expensive, and the bearings have higher friction than an ideal cylindrical or tapered roller bearing since there will be a certain amount of sliding between rolling elements and races.
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