• East India Bearing Co Private Limited

Ball Screw For Automotive Electric Actuators

NTN Corporation has developed a 'Long life ball screw' for automotive electric actuators, with significantly longer life than conventional products. With the progression and development of high performance or low fuel consumption vehicles, electric motor driven systems are becoming increasing more common than conventional hydraulic systems for automotive applications such as engine and transmission. Those applications using ball screws are growing, however, operational environments are becoming more and more severe and reduction in size and weight is required. Consequently, improving durability of these components becomes necessary. On the other hand, in most cases for automotive applications, not only main axial loads but also moment and radial loads act on ball screws. As a result, ball screw sizes inevitably become larger because ball screws designed using conventional methods have insufficient durability. With the newly developed ball screw, the conventional standard design was reviewed and the durabil