Roller bearings that can support heavy loads are used in gearboxes* used in large industrial machines such as wind power generators, mining and construction equipment, and steelmaking equipment. In recent years, wind power generators have increased in size in order to generate more power. Also, mining and construction equipment and steelmaking equipment are used in very harsh conditions. Therefore, bearings used in the large gearboxes used for such applications must be highly reliable.

In response to these needs, NSK has developed large sized roller bearings that provide a high level of reliability through a combination of special heat treatment technology and material developed by NSK.The key to the development was a combination of special heat treatment technology and material developed by NSK that provides excellent flaking resistance, including that of white structure flaking.

NSK is targeting 1 billion yen in global annual sales by 2017 for this product, which is designed for large gearboxes used in heavy load conditions, such as wind power generators.