NSK develops self-lubricating rolling bearings

NSK Europe, the European arm of Japanese bearing producer NSK, has developed deep groove ball bearings that do not require external lubrication to be used in submersible pumps handling cryogenic gases such as hydrogen and LNG.
ราคาเกจวัดแรงดันลม has developed particular shaft bearings with a cage produced from self-lubricating fluoroplastic for submersible pumps that deal with cryogenic gases and liquids.
The stainless-steel bearings with a cage made of self-lubricating fluoroplastic are seeing growing adoption in submersible pumps as a growing number of projects promote the use of hydrogen as an vitality supply. These projects often use special submersible pumps that may reliably pump gaseous and liquid media in continuous or intermittent operation at low temperatures down to around -200°C.
In such pumps, the double bearing of the pump shaft is a critical design component. Corrosion resistance is crucial, and no lubricant can be utilized apart from the media washing across the bearing. However, this locations tough calls for on the material pairing.
So NSK has developed a collection of deep groove ball bearings particularly for these exceptional operating situations, and several key design features present differentiation from typical pump bearings. For example, the internal and outer rings are made of a chrome steel tailored to the particular requirements of rolling bearings.
A steady cage that occupies the whole internal quantity of the bearing offers guidance for the rolling elements (also manufactured from stainless steel), whereas the cage materials, a self-lubricating fluoroplastic, ensures low friction running of the bearing without exterior lubrication. In pressure gauge ด้าน ดูด , the high-performance fluoroplastic is extremely wear-resistant and provides good low-temperature properties at speeds up to 3600 rpm. The cage has a two-piece design, with the 2 halves joined by stainless-steel rivets.
The NSK bearings can be found in varied sizes (shaft diameter 30–100 mm) and are designed to be used in each larger hydrogen pumping facilities and decentralised purposes, similar to hydrogen filling stations.

Leave a Comment