NSK Europe, the European arm of Japanese bearing producer NSK, has developed deep groove ball bearings that don’t require exterior lubrication for use in submersible pumps dealing with cryogenic gases corresponding to hydrogen and LNG.
NSK has developed special shaft bearings with a cage created from self-lubricating fluoroplastic for submersible pumps that deal with cryogenic gases and liquids.
หลักการทำงานของเกจ์วัดแก๊ส -steel bearings with a cage manufactured from self-lubricating fluoroplastic are seeing rising adoption in submersible pumps as a rising number of tasks promote using hydrogen as an energy source. เกจวัดความดันแก๊ส use special submersible pumps that may reliably pump gaseous and liquid media in steady or intermittent operation at low temperatures right down to round -200°C.
In such pumps, the double bearing of the pump shaft is a important design component. Corrosion resistance is essential, and no lubricant can be used aside from the media washing across the bearing. However, this locations tough calls for on the fabric pairing.
So NSK has developed a sequence of deep groove ball bearings particularly for these exceptional operating circumstances, and a variety of other key design options present differentiation from conventional pump bearings. For instance, the inner and outer rings are made from a chrome steel adapted to the particular requirements of rolling bearings.
A stable cage that occupies the complete inside quantity of the bearing offers steerage for the rolling components (also made from stainless steel), while the cage material, a self-lubricating fluoroplastic, ensures low friction working of the bearing without exterior lubrication. In addition, the high-performance fluoroplastic is extremely wear-resistant and offers good low-temperature properties at speeds as a lot as 3600 rpm. The cage has a two-piece design, with the 2 halves joined by stainless steel rivets.
The NSK bearings can be found in numerous sizes (shaft diameter 30–100 mm) and are designed to be used in both larger hydrogen pumping amenities and decentralised functions, corresponding to hydrogen filling stations.
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