THK’s New Contact Ring BWH is Their Best High-Speed Rotary Bearing Yet

On November 2, THK CO., LTD. began accepting orders for their latest innovation in high-speed rotary bearings: the High-Speed, Double-Row Angular Contact Ring BWH. This new product is part of the THK Rotary Series and represents a significant advancement in rotary-bearing technology. The BWH is designed with balls aligned inside a cage between the inner and outer rings, providing superior load-bearing capabilities, high rigidity, and exceptional rotational accuracy. By incorporating a new structure that replaces rollers with balls, the BWH has achieved unprecedented high-speed performance in THK’s history.

The Evolution of THK Rotary Bearings

THK’s cross-roller rings have been a staple in various applications for many years, including rotary tables for machining centers, industrial robot joints, and reduction gears. However, as technological demands have grown, so have customer expectations for rotary bearing performance. The industry has been increasingly seeking bearings that offer both high rigidity and high-speed capabilities. In response to these demands, THK embarked on the development of the BWH to deliver a product that meets these elevated standards.

Meeting High-Speed Performance Demands

The High-Speed, Double-Row Angular Contact Ring BWH not only meets the high-speed performance demands but also addresses heat generation issues associated with continuous high-speed rotation. By switching from rollers to balls as the rolling elements, THK has effectively reduced temperature increases, ensuring stable performance even under strenuous conditions. This innovation opens up new possibilities in the high-speed rotation range, previously not adequately covered by existing products. Specifically, in the machine tool market, integrating the BWH into equipment such as machining centers and multifunctional machines can significantly enhance machine performance and productivity by incorporating high-speed rotary tables and other advanced features.

Future Prospects and Expansions

THK plans to expand the BWH product lineup to include inner diameters of ø100, ø120, and ø200, with additional large-diameter models in the pipeline. This expansion will enable THK to cater to a broader range of applications, from general industrial machinery to precision machinery and high-precision machine tools. By continuously pushing the boundaries of compactness, high rigidity, and high-speed performance, THK is poised to make substantial contributions to the advancement of industrial and precision machinery. The High-Speed, Double-Row Angular Contact Ring BWH is a testament to THK’s commitment to innovation and customer satisfaction.

Features

Superb High-Speed Performance Rotary Bearing

The innovative design of aligning balls within a cage enables stable and smooth motion, enhancing high-speed performance while minimizing temperature increases caused by friction on the rolling surface. This results in better overall efficiency compared to traditional roller bearings.

No Need to Adjust the Preload

Both the inner and outer rings of the bearing have an integrated structure and come equipped with the appropriate preload. This eliminates the need for preload adjustments during installation, ensuring optimal performance right out of the box.

Easy to Install

The bearing can be mounted directly using the pre-drilled holes on the inner and outer rings, eliminating the need for additional holders. This design simplifies the assembly process, making installation quick and straightforward.

Need Assistance?

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