Views: 2 Author: Site Editor Publish Time: 2018-10-17 Origin: Site
High operational reliability and low friction performance
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NSK Ltd. (NSK; Headquarters: Tokyo, Japan; President and CEO: Toshihiro Uchiyama) has developed high performance tapered roller hub unit bearings (HUB*1) for pickup trucks, large SUVs, and commercial vehicles. The newly developed tapered roller HUBs feature a unitized design and apply NSK low friction technology to improve operational reliability and fuel economy. NSK is targeting 5 billion yen in sales of these bearings in 2023.
*1 A HUB is a part that integrates a bearing with the hub on which automobile wheels are mounted.
Development Background
Tapered roller HUBs have higher rigidity and longer service life compared to ball bearings of the same size, and are often selected for use in pickup trucks, large SUVs, and commercial vehicles. Ball bearing third-generation HUBs (HUB 3), which integrate the hub shaft and inner ring for improved ease of assembly, are already on the market. The difficulty in manufacturing tapered roller HUBs has, until now, prevented widespread adoption of tapered rollers in HUB 2.5 (“Generation 2.5," with preassembled hub shaft and bearing) and HUB 3 lineups.
Lacking the convenience of a unitized design, it has been necessary for carmakers and mechanics to assemble and press-fit the hub shaft and bearing. Improper assembly or excessive press-fit force can lead to unwarranted noise and other modes of failure or reduced performance. In light of this, there is increasing demand for HUB 2.5 and HUB 3 to prevent the occurrence of assembly and press-fit related issues.
Around the world, the trend toward stricter environmental regulations and fuel economy standards is now driving aggressive improvements in fuel economy in vehicles of all sizes, not just in passenger vehicles, but also in larger SUVs and commercial vehicles. To keep pace with the trends, reducing friction in tapered roller HUBs is a vital undertaking.
Product Benefits
The newly developed tapered roller HUBs feature a unitized design and apply NSK low friction technology, thereby contributing to improved operational reliability and fuel economy.
KMY bearing profile:
1) Our company insists on the " quality first, credit first" business ideas and our product specification is well-founded. We have a good reputation in the international market by our perfect service and sufficient supply.
2) We use the highest quality, fastest delivery time, the best service! We sincerely want every customer to establish friendly relations of cooperation.
