cylindrical roller slewing bearing—greatest loading capability

What is cylindrical roller slewing bearing? It
is a type of turntable bearing. It turns out to be good at loading, which is mainly applied in heavy loading operation surroundings. It consists of three rings, there are upper, lower and radial raceway, which are separated respectively, so that it is easier to decide the loading of every row roller. There is also an adjusting shim for adjusting axial clearance. To be more exact, upper and lower row rollers are set horizontally while the third row roller is set vertically because the forces they can bear are different.
And that lead to the three-row roller slewing bearing working together at the same time perfectly.


There are several kinds of models. One kind of cylindrical roller slewing bearing has three seat-rings,
which separate the upper,
lower and radial races, and the load of each row of the rollers are specified by them. It can bear different loads simultaneously ,which make its load capacity the largest one among the models.

Because of the large size of its axle and radius,
it is
especially used for heavy-duty machines as large working radius is needed, like bucket-wheel excavators,
wheeled cranes,
ship cranes,
ladle turrets, heavy duty mobile cranes and so on.