Bearings - 26/09/2013
In response to this need, NSK has developed a cylindrical roller bearing with increased load capacity for higher reliability in large gearbox applications.
1. Longer life by increasing the number of rollers
By increasing the number of rollers, NSK has reduced value of surface pressure exerted on the contact area between the rollers and rings, thereby increasing the load capacity and lengthening the life of the bearing.
2. Optimization of the cage shape for reduced stress
Increasing the number of rollers results in thinner cage walls, which in turn, weakens the cage. NSK countered this side effect by optimizing the cage shape to suppress stress concentration in the cage bar members, thereby achieving a sufficiently strong cage.
This product achieves an approximate 30% increase in life over that of the current product, improving the reliability of gearboxes even in harsh environments.
* Gearbox: A device that converts input revolutions to the desired level of output revolutions through the meshing of multiple gears between the input and output shafts.
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