In addition to SKF Nautilus bearing cage design,

In the early market, in order to meet the design requirements for single bearing, usually bearing the three cylindrical roller bearings. The design is similar slewing bearing, a rolling body (similar to the cylindrical roller bearings) to bear all of the radial force, the other two rolling elements (similar to roller thrust Precision bearing) bear a bidirectional axial force. The bearing of the bearing arrangement appears to meet some of the features alone, but by running the analysis bearing thrust bearing function as two rows of rolling bodies to make the whole circle of the bearing is rotated, the both end surfaces of the rolling elements can not achieve the same speed, which it means that the bearings during the large number of sliding friction. And as rolling bearings, sliding friction is to try to avoid, because it will not only bring more bearing heating, while the lubrication of sliding friction in the bearing lubrication is also a very difficult question. Because of the design on some of the issues, the bearing is now unable to meet the growing power of the wind turbines to the demand.
Comparison of different designs cage
In addition to SKF Nautilus bearing cage design, the market there are several different cage designs. Respectively, are to compare the advantages and disadvantages of several cage.
Figure 4 is one of the wear metal pin-type cage. As the name implies, the rolling elements of the bearing design of the through hole in the middle of a rolling pin are connected to the ends of the retainer ring side. By design, the size of this bearing rolling elements bearings other than the same size is much larger, because not only sufficient to meet the load carrying capacity, but also in the rolling open a hole inside the body in order to wear a pin-type cage installation. In addition, the lubrication of the sliding member is an important issue, which has been mentioned in the above. The body bore bearing rolling pin and cage wear are all between the sliding friction, lubrication problems not only not been resolved, it brings the bearing heating and must be of concern.