NSK Develops 6th-Generation “Low-Friction Tapered Roller Bearings for Automotive Applications”
Resource from: NSK Likes:222
Mar 15,2017
NSK Ltd. (NSK; Headquarters: Tokyo, Japan; President and CEO: Toshihiro Uchiyama) today announced that it has developed 6th-generation low-friction tapered roller bearings for automotive transmissions. The new tapered roller bearings have even lower friction and will contribute to higher automotive fuel economy. NSK is targeting 2 billion yen in annual global sales of this new product in 2022.
NSK Develops 6th-Generation Low-Friction Tapered Roller Bearings for Automotive Applications
Development Background
There is a need to reduce friction in rolling bearings used in transmissions in order to improve transmission efficiency, which in turn helps to improve automotive fuel economy. Generally, ball bearings or tapered roller bearings are used for the rolling bearings that support the transmission shaft. Thus, the important issue is to find a way to reduce the friction of tapered roller bearings, which tend to have a lot of friction compared to ball bearings.
In tapered roller bearings, rolling friction is produced between the roller surface and the raceway of the inner and outer rings; sliding friction is produced between roller heads and the large rib of the inner race; and further friction is produced by agitation resistance in the lubricating oil. Since 1980, NSK has been developing tapered roller bearings that reduce these kinds of friction. Over the first five generations, NSK reduced friction loss by 60 percent.
However, to meet the social need for improved fuel economy, which has been growing more and more in recent years, there was a need to develop even better low-friction technology for tapered roller bearings.
Product Features
When tapered roller bearings rotate at a low speed, the sliding friction produced between the roller heads and the large rib has a large impact on friction throughout the bearing. The newly developed product improves this, thereby reducing friction without affecting the other functions of tapered roller bearings.
1. Lower friction
By improving the surface roughness of the roller heads and the large rib, friction was reduced by up to 60 percent at low speeds and up to 20 percent on average for all rotation speeds.
2. Larger effect in a low-viscosity oil environment
In recent years, the use of low-viscosity lubrication oil in transmissions has increased in order to reduce agitation resistance in lubrication oil. The newly developed product's effect is even more pronounced when low-viscosity oil is used.
Product Benefits
This bearing reduces friction compared to the conventional bearing, and will thereby contribute to improved fuel economy.
NSK Develops 6th-Generation Low-Friction Tapered Roller Bearings for Automotive Applications
Development Background
There is a need to reduce friction in rolling bearings used in transmissions in order to improve transmission efficiency, which in turn helps to improve automotive fuel economy. Generally, ball bearings or tapered roller bearings are used for the rolling bearings that support the transmission shaft. Thus, the important issue is to find a way to reduce the friction of tapered roller bearings, which tend to have a lot of friction compared to ball bearings.
In tapered roller bearings, rolling friction is produced between the roller surface and the raceway of the inner and outer rings; sliding friction is produced between roller heads and the large rib of the inner race; and further friction is produced by agitation resistance in the lubricating oil. Since 1980, NSK has been developing tapered roller bearings that reduce these kinds of friction. Over the first five generations, NSK reduced friction loss by 60 percent.
However, to meet the social need for improved fuel economy, which has been growing more and more in recent years, there was a need to develop even better low-friction technology for tapered roller bearings.
Product Features
When tapered roller bearings rotate at a low speed, the sliding friction produced between the roller heads and the large rib has a large impact on friction throughout the bearing. The newly developed product improves this, thereby reducing friction without affecting the other functions of tapered roller bearings.
1. Lower friction
By improving the surface roughness of the roller heads and the large rib, friction was reduced by up to 60 percent at low speeds and up to 20 percent on average for all rotation speeds.
2. Larger effect in a low-viscosity oil environment
In recent years, the use of low-viscosity lubrication oil in transmissions has increased in order to reduce agitation resistance in lubrication oil. The newly developed product's effect is even more pronounced when low-viscosity oil is used.
Product Benefits
This bearing reduces friction compared to the conventional bearing, and will thereby contribute to improved fuel economy.
(NSK)
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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.
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