The bearings that are used in the dryer rolls of papermaking machines operate in hot environments because high temperature steam is passed through the rolls. The following are examples of the kinds of bearing damage that can consequently arise:
In particular, fracture of the inner ring (3, above) in the bearing can constitute a serious incident that results in production stoppages. In response, NSK has developed its TL (tough and long life) bearings. Thanks to the use of a special nitrocarburizing treatment for the materials, the fracture strength of the inner ring has been increased and dimensional stability at high temperatures is excellent.
These TL bearings have the overwhelming trust of the market, and they enjoy an unassailable position as the leading choice for dryer cylinder roll bearings.
In recent years, the papermaking industry has been making great strides by enhancing the speed and the width of coverage of papermaking machines with the objective of boosting productivity. To reduce the amount of downtime caused by unexpected problems, customers demand high reliability from the bearings that are used in papermaking machines. NSK has developed a range of bearings that meet these demands, and the company's bearings are used in all sections of modern papermaking machines. In particular, NSK is supporting papermaking with two kinds of bearings:
NSK will continue to develop highly reliable bearings that will lead to further productivity improvements in the papermaking industry, and it will continue to contribute to the development of the industry.
NSKHPS HPS High Performance Standard Bearings for Industrial Machinery Spherical Roller Bearings
TL Series Spherical Roller Bearings
The NSKHPS series of spherical roller bearings provides a longer service life and higher limiting speeds.
Provide superior resistance to inner ring fractures. The tough, long-life, TL series of bearings help boost productivity and lower costs.