What is the level of domestic production for low-temperature expanders?

The expander – back in the summer of 2013, a company in Chengdu sent him a small brochure about it. Since our project at that time planned to use imported foreign brands, we didn’t pay too much attention to it. The information to remember is as follows: 1. There are already many users in the domestic market ； 2. But the power is generally low ； 3. There are indeed no actual applications of magnetic levitation, but if the customer prefers it, they can provide such solutions. As for magnetic levitation bearings, this is an independent technology that has no inherent connection to the expander itself. In other words, wherever lubricated bearings can be used, magnetic levitation bearings can generally be used as well; the key issue is cost. The company in France that does the best work in magnetic levitation is almost a monopoly in the market for high-power magnetic levitation bearings in Europe and the United States. Its on-site service costs are very high, at around 1,500 to 2,000 euros per day. But Crostar won’t tell you these things unless you ask. What he told you is that, compared to lubricated bearings, magnetic levitation bearings require a slightly higher initial investment, but their operating and maintenance costs are significantly lower. There should also be companies specializing in magnetic levitation bearings in China, but I haven’t done any research on them.

It seems there are no application examples of magnetic levitation expanders in China; Shanshan can only produce expanders for media at around 80°C – temperatures lower than that are not feasible

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