NSK Europe, the European arm of Japanese bearing producer NSK, has developed deep groove ball bearings that don’t require external lubrication to be used in submersible pumps dealing with cryogenic gases corresponding 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 of self-lubricating fluoroplastic are seeing rising adoption in submersible pumps as a growing number of tasks promote using hydrogen as an energy source. pressure gauge 4 นิ้ว use special submersible pumps that can reliably pump gaseous and liquid media in steady or intermittent operation at low temperatures all the means down to around -200°C.
In such pumps, the double bearing of the pump shaft is a crucial design factor. Corrosion resistance is crucial, and no lubricant can be utilized aside from the media washing around the bearing. However, this locations tough demands on the fabric pairing.
So NSK has developed a collection of deep groove ball bearings particularly for these distinctive working conditions, and several key design options provide differentiation from standard pump bearings. For example, the internal and outer rings are manufactured from a stainless steel tailored to the particular necessities of rolling bearings.
A steady cage that occupies the whole inside volume of the bearing offers steering for the rolling elements (also made from stainless steel), while the cage material, a self-lubricating fluoroplastic, ensures low friction working of the bearing without external lubrication. In addition, the high-performance fluoroplastic is extraordinarily wear-resistant and provides good low-temperature properties at speeds as much as 3600 rpm. The cage has a two-piece design, with the 2 halves joined by stainless steel rivets.
เกจวัดแรงดันน้ำมันเครื่อง are available in various sizes (shaft diameter 30–100 mm) and are designed to be used in each larger hydrogen pumping amenities and decentralised functions, corresponding to hydrogen filling stations.