Application of papermaking machinery

2021-12-28


In recent years, in order to improve production efficiency, paper machines are developing at high speed and wide width. In addition, in order to reduce the shutdown caused by accidental failure, the bearings used in paper machines are required to have higher reliability.

BLS has a series of products that can meet these needs. All machines of the paper production line are equipped with BLS bearings. In particular, Tl (tough & long life) bearing developed by applying BLS's material heat treatment technology and BLS self-aligning roller bearing developed by integrating material technology, design technology and manufacturing technology play an important role in supporting the paper industry.

BLS will continue to develop high reliability bearings closely related to improving production efficiency in the future, and always contribute to the development of paper industry.

As the high-temperature steam passes through the roller, the bearing used for the drying roller of papermaking machinery should be in a high-temperature environment. Therefore, the bearing will be stripped early due to insufficient formation of lubricating oil film, creep caused by aging due to long-term high-temperature use, and the matching stress will increase due to the temperature difference between the shaft and the inner ring, resulting in cracks in the inner ring of the bearing. In particular, inner ring cracks will cause major accidents leading to shutdown. As a countermeasure to these problems, BLS carries out special carbonitriding treatment on the materials, A high hardness and long life "TL (tough & long life) bearing" has been developed, which improves the cracking resistance of the inner ring and has dimensional stability at high temperature. This TL bearing has the best reliability among similar products. As a special bearing for the hydraulic cylinder roll of the drying department, it has established a stable position in the market.