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 dealing with cryogenic gases similar to hydrogen and LNG.
NSK has developed particular shaft bearings with a cage made from self-lubricating fluoroplastic for submersible pumps that deal with cryogenic gases and liquids.
The stainless-steel bearings with a cage made from self-lubricating fluoroplastic are seeing increasing adoption in submersible pumps as a growing variety of initiatives promote the use of hydrogen as an energy source. pressure gauge ดิจิตอล use particular submersible pumps that can reliably pump gaseous and liquid media in steady or intermittent operation at low temperatures down to round -200°C.
In such pumps, the double bearing of the pump shaft is a important design factor. Corrosion resistance is essential, and no lubricant can be used aside from the media washing around the bearing. However, เกจวัดแก๊สหุงต้ม on the fabric pairing.
So NSK has developed a series of deep groove ball bearings particularly for these distinctive working conditions, and several other key design features provide differentiation from conventional pump bearings. For instance, the internal and outer rings are made from a chrome steel tailored to the particular necessities of rolling bearings.
A secure cage that occupies the whole inner volume of the bearing offers steering for the rolling elements (also manufactured from stainless steel), while the cage material, a self-lubricating fluoroplastic, ensures low friction operating of the bearing with out exterior lubrication. In addition, the high-performance fluoroplastic is extraordinarily wear-resistant and presents good low-temperature properties at speeds as a lot as 3600 rpm. The cage has a two-piece design, with the 2 halves joined by stainless steel rivets.
The NSK bearings are available in various sizes (shaft diameter 30–100 mm) and are designed to be used in each larger hydrogen pumping services and decentralised purposes, similar to hydrogen filling stations.
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