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Bearing misalignment


Self-alignment in a traditional bearing versus an Extreme Bearing

The traditional bearing unit contains ballbearing inserts. (Portrayed in the drawing.) Fitted. With a spherical outer ring. (Marked in red.) The idea is that the bearing is self-aligning. However, this is not always the case. What usually happens. Is that the force (F), holds the outer ring of the insert. Firmly in the housing. Making it difficult. Or even impossible for the insert. To adjust itself.

If the bearings are subject to excessive axial loading. The forces generated penetrate. Through the bearing. Causing damage to the balls. Inner ring, ball race. And even the housing. Ultimately, the insert has to be replaced. While the bearing housing is also damaged. Permanently. In many cases.

What is misalignment? Further information you can find on

How the Extreme Bearing aligns without friction

An Extreme Bearing does not use UC ballbearings. With a spherical outer ring. But instead we use a spherical roller bearing. With a flat outer ring. With a concave raceway. The concave raceway in combination with the spherical rollers operate over a wide range of contact angles. Thus the rollers align themselves correctly. With the shaft and assembly. Without causing undue stress on the rest of the bearing assembly.

spherical roller bearing is a rolling-element bearing. That permits rotation with low friction. And permits angular misalignment. Typically these bearings support a rotating shaft in the bore of the inner ring that may be misaligned in respect to the outer ring. The misalignment is possible due to the spherical internal shape of the outer ring and spherical rollers

If you are at an impasse. Please don’t hesitate to contact us.

An Extreme Bearing can handle an alignment error. Up to 3 degrees. But this depends on which seal is chosen.