Seiko Co., Ltd. (hereinafter referred nsk) development of "enhanced resistance to dents deep groove ball bearings with high static strength at both ends of the bearing raceway, can be used in the automotive Poor * 1 (hereinafter referred to as the difference) and variable speed box.

     Torque and higher efficiency is required to further reduce the level of the bearing, because it is a greater need for the car′s fuel efficiency and reduce carbon dioxide emissions. In the driveline components, such as differential and gearbox bearings used bear large thrust loads. However, the tapered roller bearing, tapered roller bearings in these applications are widely used, there is a problem, such as a relatively high rotational torque, need to be adjusted during assembly preload. In contrast, the ball bearings with a low torque and is capable of supporting force, but this type of application required to meet the load capacity of the thrust ball bearing.

     nsk bearing newly developed "enhanced anti-creasing deep groove ball bearings" during the surface modification with special heat treatment process, has been reduced to 1/2, compared with standard thermal Brinell indentation depth - static load capacity index - treatment. This makes about 60% * 3 is expected to reduce the difference between the torque side bearing ball bearings, compare, and other applications using tapered roller bearings nsk be replaced. Preload assembly and control the number of man-hours required for processing can be reduced, thereby contributing to the car manufacturers to improve the productivity, in addition to the fuel efficiency of automobiles.

     1: wheeled vehicles, such as cars used in the drive train components. A differential wheel speed difference compensation (inside and outside of the wheel speed difference between) to open a corner of the car, and that the torque from the power unit is uniformly distributed.

     2: Stay on target over after removing the plastic limit of the material forces, when two objects at the Hertz contact plastic deformation indentation.

     3: Compared to tapered roller bearings in the 2-liter class models difference in the 100 km / h, with 70% load and the driving torque of the engine.