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 corresponding to hydrogen and LNG.
NSK has developed special 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 the utilization of hydrogen as an energy supply. เกจ์วัดแรงดันน้ำ use special submersible pumps that can reliably pump gaseous and liquid media in continuous or intermittent operation at low temperatures right 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 other than the media washing across the bearing. However, this locations powerful calls for on the fabric pairing.
So NSK has developed a series of deep groove ball bearings specifically for these distinctive working circumstances, and several key design features present differentiation from conventional pump bearings. For instance, the inside and outer rings are made from a stainless steel adapted to the particular necessities of rolling bearings.
A stable cage that occupies the complete internal volume 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 operating of the bearing without exterior lubrication. In เกจวัดแรงดันลมดิจิตอล , the high-performance fluoroplastic is extraordinarily wear-resistant and presents 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 are available in varied sizes (shaft diameter 30–100 mm) and are designed to be used in each larger hydrogen pumping amenities and decentralised functions, such as hydrogen filling stations.