NSK Europe, the European arm of Japanese bearing manufacturer NSK, has developed deep groove ball bearings that do not require external lubrication to be used in submersible pumps handling cryogenic gases such as hydrogen and LNG.
NSK has developed particular shaft bearings with a cage produced 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 initiatives promote the usage of hydrogen as an energy source. These initiatives often use special submersible pumps that may reliably pump gaseous and liquid media in steady or intermittent operation at low temperatures down to around -200°C.
In ราคาเกจวัดแรงดัน , the double bearing of the pump shaft is a critical design component. Corrosion resistance is essential, and no lubricant can be utilized aside from the media washing around the bearing. However, this locations powerful demands on the material pairing.
So NSK has developed a series of deep groove ball bearings particularly for these distinctive operating conditions, and a variety of other key design options provide differentiation from typical pump bearings. For example, the inside and outer rings are manufactured from a chrome steel adapted to the particular requirements of rolling bearings.
A stable cage that occupies the complete inside quantity of the bearing provides steerage for the rolling components (also made of stainless steel), while the cage materials, a self-lubricating fluoroplastic, ensures low friction working of the bearing without exterior lubrication. In addition, the high-performance fluoroplastic is extraordinarily wear-resistant and provides good low-temperature properties at speeds as a lot as 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 both bigger hydrogen pumping services and decentralised purposes, similar to hydrogen filling stations.
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