NSK Europe, the European arm of Japanese bearing producer NSK, has developed deep groove ball bearings that do not require external lubrication to be used in submersible pumps handling 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 from self-lubricating fluoroplastic are seeing rising adoption in submersible pumps as a growing number of tasks promote the usage of hydrogen as an power source. These projects typically use particular submersible pumps that can reliably pump gaseous and liquid media in continuous 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 element. Corrosion resistance is important, and no lubricant can be used apart from the media washing across the bearing. However, เกจวัดแรงดันลมขนาดเล็ก places robust calls for on the fabric pairing.
So NSK has developed a collection of deep groove ball bearings particularly for these distinctive operating situations, and a number of other key design features provide differentiation from conventional pump bearings. For example, the internal and outer rings are manufactured from a stainless steel tailored to the special requirements of rolling bearings.
A steady cage that occupies the whole internal quantity of the bearing supplies steerage for the rolling elements (also made of stainless steel), whereas the cage material, a self-lubricating fluoroplastic, ensures low friction operating of the bearing without exterior lubrication. In addition, the high-performance fluoroplastic is extremely wear-resistant and provides good low-temperature properties at speeds as a lot as 3600 rpm. เกจวัดน้ำยาแอร์refco has a two-piece design, with the 2 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 both bigger hydrogen pumping services and decentralised applications, similar to hydrogen filling stations.
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