NSK Europe, the European arm of Japanese bearing producer NSK, has developed deep groove ball bearings that do not require exterior lubrication to be used in submersible pumps dealing with cryogenic gases such as 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 manufactured from self-lubricating fluoroplastic are seeing increasing adoption in submersible pumps as a rising variety of initiatives promote using hydrogen as an energy source. These tasks typically use special submersible pumps that can 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 crucial design component. Corrosion resistance is crucial, and no lubricant can be utilized aside from the media washing across the bearing. However, this locations powerful demands on the material pairing.
So เกจวัดไนโตรเจนราคา has developed a series of deep groove ball bearings specifically for these distinctive working conditions, and a number of other key design features provide differentiation from conventional pump bearings. For instance, the internal and outer rings are made of a stainless-steel tailored to the particular requirements of rolling bearings.
A steady cage that occupies the entire inside quantity of the bearing supplies steerage for the rolling parts (also made of stainless steel), while the cage material, a self-lubricating fluoroplastic, ensures low friction running 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 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 numerous sizes (shaft diameter 30–100 mm) and are designed for use in each larger hydrogen pumping facilities and decentralised functions, similar to hydrogen filling stations.
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