In recent years, reduce vehicle emissions and improve fuel economy of vehicle has become a regardless of industry or folk are very focused on a topic. Therefore, research and development of various manufacturers more efficient engine, motor control, more precise, especially in the exhaust gas recirculation system and electronic valve design, the engine exhaust system is now compared to the past has already reduced the amount of nitrogen oxide emissions.
However, bearing components installed in the engine will have the vibration when the engine is running or will cause the bearing wear and reduce the service life. Therefore, NSK recently launched a wear resistance erosion bearing.
1 the bearing lubricating oil into the optimization to the track surface. Even bearing in the bad vibration environment, the lubricating oil can still good into the bearing, and compared with the present bearing, the vibration condition of mechanical wear degree to reduce half.
2 in the change of lubricating oil into the orbit plane and its basic properties remain unchanged, such as friction loss and anti seizure property.
Ball bearing in the rotation in accordance with the yellow arrow direction, can be completely transferred to the left on the right side of the lubricating oil of pink area, the ball was completely lubricating oil package. However, the engine will occur reciprocating vibration at run time, so the bearing ball will be before and after vibration, when the ball along the yellow arrow direction rolling region, pink ball and direct contact of metal pieces, will produce mechanical wear.
Lubricating oil NSK model bearing into the orbit surface after optimization, can prevent the direct contact with the ball and metal parts in the engine to generate reciprocating vibration. A new generation of bearing noise emitted in vibration when compared to the previous generation has been cut in half. In after the experiment, the right side of the new generation of bearing inner rail surface is smooth, and the surface of the rail bearing currently used within appeared different degree of wear erosion.