NTN: Developed hydrogen brittle bearing: Inhibits hydrogen atom intrusion
-Prevents premature damage caused by hydrogen-
May 24, 2021
NTN:
By developing new steel materials and special heat treatment technology
Prevents premature damage to bearings due to hydrogen,
Announced that it has developed a hydrogen brittle resistant bearing.
High efficiency of power transmission device:
In the automobile market, the efficiency of power transmission devices is required to be further improved against the background of electrification.
Reduction of the amount of lubricating oil in the equipment,
Low viscosity oil, etc.
Bearings are required to cope with more severe lubrication conditions.
Countermeasures against hydrogen brittleness:
In recent years, there has been a problem that the strength of steel materials decreases due to the invasion of hydrogen atoms into steel materials.
Bearings may be damaged early due to hydrogen brittleness, and countermeasures have been sought.
Hydrogen brittle bearing:
For hydrogen brittle bearings,
Adoption of new steel materials and
With the newly developed special heat treatment technology
Early damage due to this hydrogen brittleness was suppressed, and a long life was realized.
Use new steel
A large number of hard and fine metal compounds are dispersed on the surface layer of the raceway surface of bearings using new steel materials.
Suppresses metal exposure
It is hard to wear even in contact with metal under dilute lubrication conditions, and suppresses the exposure of the newly formed metal surface, which is the source of hydrogen atoms.
Suppression of hydrogen atom invasion
In addition, even when hydrogen atoms are generated, the fine metal compound suppresses the penetration rate (diffusion) of hydrogen atoms into the bearing.
As a result, we succeeded in extending the life of the developed product more than three times compared to the company’s standard bearings.
NTN is a reference exhibit:
NTN will exhibit the developed products for reference at the “Human and Car Technology Exhibition 2021 Online” to be held from May 26th to July 30th.
Response (Response.jp)
https://response.jp/article/2021/05/24/346091.html
NTN: Developed “hydrogen brittle bearing”
-“Hydrogen brittle bearing” developed by NTN-
By adopting new steel materials and newly developed special heat treatment technology,
It is a product that suppresses premature damage due to hydrogen brittleness and achieves a long life.
The new product suppresses the exposure of the metal formation surface * 1, which is the source of hydrogen atoms.
Even when a hydrogen atom is generated
The fine metal compound
It suppresses the penetration rate (diffusion) of hydrogen atoms into the bearing.
Product / Technical Information | NTN Corporation
https://www.ntn.co.jp/japan/news/new_products/news202100038.html