Problems with lubricating oil in screw air compressors
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Our company purchased an LU110-10 air compressor. After 500 hours of operation, it was time to change the oil. The manufacturer’s price was 60 yuan per liter; the filter cost over 600 yuan, and the filter element also cost 600 yuan. The initial purchase cost more than 180,000 yuan, and now maintenance costs so much as well. What do you all do in your companies to deal with this? By the way, the oil specified in the manual is LT3046 – I wonder if there are any alternatives. I’m anxious
You’ve only encountered this problem now? When we encountered this problem, we also thought about finding a substitute, but the compressor manufacturers’ terms stipulate that their oil, filters, and elements must be used within the warranty period; otherwise, they do not guarantee that the design requirements will be met, and they will not be responsible for any issues that arise, claiming that it is because we did not use their specified components, which has caused damage to their equipment
Our “four-in-one unit” uses No. 46 turbine oil for unified lubrication, and the cost is not low either.
People don’t know much about the market situation for screw compressors. From the perspective of oil prices, 60 yuan per liter is not really expensive. You are using Liu Fuda air compressors, which are domestic-made; if you use foreign brands such as Atlas, Ingersoll Rand, or Schulz, the oil price will be between 100 and 120 yuan per liter. However, the oil from foreign brands has a longer lifespan. In fact, the manufacturers of domestic air compressors also purchase the oil from outside and simply put their own brand on it. Don’t be afraid of their nonsense claims like “they won’t be responsible for any problems” – that’s just meant to scare you. The purchase cost of screw compressors is low, but their maintenance costs are quite high. This is a flaw inherent in these devices, one that cannot be changed. Therefore, when purchasing an air compressor in the future, it’s important to consider other options as there isn’t just the screw compressor model available
What brand of machine did you buy? The Shanghai Unites model costs over 150,000 yuan, offering great value for money
There really is no such thing as the most expensive – only more expensive! ! ! We have Quintek screw compressors; the manual states that the lubricant should last for 8,000 hours. After 4,000 hours of use, a representative from Changchun was sent by the manufacturer, who said that the lubricant must be replaced! 160 yuan per liter! ! ! My dear mother! Stealing money! Considering local production. Under no circumstances should original or low-quality oil be used.