NTN Low Torque Sealed Deep Groove Ball Bearing
NTN Corporation (hereafter, NTN) has developed the “Low Torque Sealed Deep Groove Ball Bearing”, which contributes to higher efficiency of motors installed within electric vehicles (EV) and other applications.
Various efforts to reduce the power used by EV drive motors have been implemented in recent years as a means of reducing the weight of required batteries and to extend the mileage of vehicles. To help achieve these efforts, bearings used in EV motors require an even lower level of torque.
Since sealed deep groove ball bearings used as support bearings in EV motors operate at light loads and high speeds, the rotational torque largely depends on the characteristics of grease within the bearing.
The newly developed “Low Torque Sealed Deep Groove Ball Bearing” is designed with a new type of grease developed to reduce stirring resistance, which is the main cause of rotational torque. The newly developed grease consists of a base oil with a low-viscosity, and contains a thickener with a fine, microscopic molecular structure. This thickener improves the retaining strength of the base oil, which reduces the quantity of thickener required.
Sound levels (sound performance) have been kept at the same level or lower than conventional motor grease. The formula of grease additives has also been reviewed and optimized to limit the effects of oxidation at high temperatures, and deliver a longer operating life over conventional products.
In addition to development of the grease, a low-torque cage has been utilized to address the contact shape between the rolling element and cage pocket, which helps to limit the amount of excess grease on the bearing rolling surface.
NTN plans to market the “Low Torque Sealed Deep Groove Ball Bearing” globally for a variety of uses, including EV motors, automotive electrical instruments and auxiliary devices, other types of motors used in industrial machinery.
[Features] Compared with conventional products (standard sealed deep groove ball bearings)
(1) Torque : 50% or more reduction
(2) Sound : same level or lower
(3) Operating life : same or better under actual operating conditions
[Applicable Parts]
EV motor and applicable parts of developed products (example layout)
1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
BRIEF INTRODUCTION
Cnbearing is the No.1 bearing inquiry system and information service in China, dedicated to helping all bearing users and sellers throughout the world.
Cnbearing is supported by China National Bearing Industry Association, whose operation online is charged by China Bearing Unisun Tech. Co., Ltd.
China Bearing Unisun Tech. Co., Ltd owns all the rights. Since 2000, over 3,000 companies have been registered and enjoyed the company' s complete skillful service, which ranking many aspects in bearing industry at home and abroad with the most authority practical devices in China.
