NSK develops self-lubricating rolling bearings

NSK Europe, the European arm of Japanese bearing manufacturer NSK, has developed deep groove ball bearings that do not require exterior lubrication for use in submersible pumps handling cryogenic gases corresponding to hydrogen and LNG.
NSK has developed particular shaft bearings with a cage created from self-lubricating fluoroplastic for submersible pumps that deal with cryogenic gases and liquids.
The stainless-steel bearings with a cage manufactured from self-lubricating fluoroplastic are seeing increasing adoption in submersible pumps as a rising variety of tasks promote the use of hydrogen as an vitality source. These initiatives usually use particular submersible pumps that may reliably pump gaseous and liquid media in continuous or intermittent operation at low temperatures all the method down to round -200°C.
In such pumps, the double bearing of the pump shaft is a critical design factor. Corrosion resistance is important, and no lubricant can be utilized aside from the media washing across the bearing. However, this places powerful calls for on the fabric pairing.
So NSK has developed a sequence of deep groove ball bearings particularly for these exceptional working situations, and a number of other key design options present differentiation from conventional pump bearings. For instance, the internal and outer rings are made of a chrome steel tailored to the particular necessities of rolling bearings.
A secure cage that occupies the whole inner quantity of the bearing offers steerage for the rolling parts (also made from stainless steel), whereas the cage material, a self-lubricating fluoroplastic, ensures low friction working of the bearing with out external lubrication. In เกจวัดแรงดันลมคือ , the high-performance fluoroplastic is extremely wear-resistant and offers good low-temperature properties at speeds up to 3600 rpm. The cage has a two-piece design, with the two halves joined by stainless-steel rivets.
The NSK bearings can be found in varied sizes (shaft diameter 30–100 mm) and are designed for use in both larger hydrogen pumping facilities and decentralised purposes, similar to hydrogen filling stations.

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