NSK develops a high-speed silent internal circulation ball screw for the European machine tool industry-Bearing Knowledge-NSK Bearing_NSK Bearing_

Nippon Seiko Co., Ltd. (Headquarters: Shinagawa-ku, Tokyo, Representative: Director, Representative Executive President, CEO Toshihiro Uchiyama, hereinafter referred to as NSK) has successfully developed a low-friction, high-tight sealing ring for deep groove ball bearings. This product achieves low friction and high sealing performance of bearings at the same time. By adopting this type of sealing ring, NSK expects the annual sales of bearings to reach 2.5 billion yen in 2021. Development background Due to the diversity of bearing use environments, it is particularly important to prevent foreign matter intrusion in the surrounding environment. In the past, NSK mainly selected high-tightness contact seals or low-friction contact seals according to different applications. According to the application characteristics of the two, NSK has optimized the structure and contact parts of the seal ring, and developed a seal ring that can achieve high sealing performance and low friction performance at the same time. Product Features According to the optimal design of the sealing ring structure and contact parts, it can achieve high sealing performance and low friction performance at the same time. (1) Sealing performance equivalent to that of a high-tightness contact seal The sealing performance is ensured by optimizing the shape of the contact part. (2) Compared with low-friction contact seals, the amount of friction is greatly reduced. The amount of friction is reduced due to the reduced force of the sealing lip pressing into the inner ring. Product Effects By adopting this type of seal ring, it has greatly contributed to the improvement of the following performances in the fields of automobiles and industrial machinery. (1) Improvement of reliability (2) Significant realization of energy saving

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