NSK develops self-lubricating rolling bearings

NSK Europe, the European arm of Japanese bearing manufacturer NSK, has developed deep groove ball bearings that do not require external lubrication for use in submersible pumps handling cryogenic gases similar to hydrogen and LNG.
NSK has developed particular shaft bearings with a cage produced from self-lubricating fluoroplastic for submersible pumps that handle cryogenic gases and liquids.
The stainless-steel bearings with a cage made of self-lubricating fluoroplastic are seeing growing adoption in submersible pumps as a growing number of initiatives promote using hydrogen as an vitality supply. pressure gauge 4 นิ้ว ราคา use particular submersible pumps that can reliably pump gaseous and liquid media in steady or intermittent operation at low temperatures right down to around -200°C.
In such pumps, the double bearing of the pump shaft is a crucial design factor. Corrosion resistance is essential, and no lubricant can be utilized aside from the media washing across the bearing. However, this places robust demands on the fabric pairing.
So NSK has developed a sequence of deep groove ball bearings specifically for these exceptional working circumstances, and several other key design features present differentiation from typical pump bearings. For example, the internal and outer rings are manufactured from a stainless steel tailored to the particular requirements of rolling bearings.
เกวัดแรงดัน that occupies the complete inner volume of the bearing supplies steering for the rolling parts (also made of stainless steel), whereas the cage materials, a self-lubricating fluoroplastic, ensures low friction operating of the bearing without external lubrication. In addition, the high-performance fluoroplastic is extraordinarily wear-resistant and offers 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 numerous sizes (shaft diameter 30–100 mm) and are designed for use in each bigger hydrogen pumping amenities and decentralised purposes, corresponding to hydrogen filling stations.

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