NSK develops self-lubricating rolling bearings

NSK Europe, the European arm of Japanese bearing manufacturer NSK, has developed deep groove ball bearings that don’t require external lubrication for use in submersible pumps dealing with cryogenic gases similar to hydrogen and LNG.
NSK has developed special 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 growing adoption in submersible pumps as a growing number of initiatives promote the utilization of hydrogen as an vitality source. These initiatives typically use particular submersible pumps that can reliably pump gaseous and liquid media in steady or intermittent operation at low temperatures all the way down to around -200°C.
In such pumps, the double bearing of the pump shaft is a critical design element. Corrosion resistance is important, and no lubricant can be used other than the media washing across the bearing. However, this locations powerful demands on the fabric pairing.
So NSK has developed a series of deep groove ball bearings particularly for these exceptional working conditions, and several key design options provide differentiation from typical pump bearings. For จำหน่ายเกจวัดแรงดัน , the inner and outer rings are made of a chrome steel tailored to the particular necessities of rolling bearings.
A stable cage that occupies the whole inside quantity of the bearing provides steerage for the rolling parts (also manufactured from stainless steel), whereas the cage materials, a self-lubricating fluoroplastic, ensures low friction operating of the bearing with out external lubrication. In addition, the high-performance fluoroplastic is extraordinarily wear-resistant and offers good low-temperature properties at speeds as much as 3600 rpm. The cage has a two-piece design, with the 2 halves joined by chrome steel rivets.
The NSK bearings are available in varied sizes (shaft diameter 30–100 mm) and are designed to be used in each larger hydrogen pumping amenities and decentralised applications, corresponding to hydrogen filling stations.

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