What are the various specifications for compressor lubricant?

1. Measure the Conrad residue. In simple terms, the carbon residue value can indirectly indicate the refinement level of lubricating oil; the higher the refinement level of the lubricating oil, the lower its carbon residue value. If the cause of a compressor explosion is related to the oil used, it is often due to severe carbon buildup, which blocks the compressor’s exhaust ports and leads to a sharp increase in internal pressure; therefore, measuring the carbon residue level is of utmost importance. 2. Viscosity of the lubricating oil. Reducing the viscosity of compressor oil can improve its performance, decrease carbon deposition, lower the specific power consumption of the compressor, and achieve significant energy savings; therefore, it is advisable to choose oil with a lower viscosity as long as proper lubrication is maintained. 3. Oil change criteria for compressor oil. The oil change interval for compressor oil varies depending on the compressor’s design, the compression medium, operating conditions, the method of lubrication, and the quality of the lubricant. It is impractical to specify a fixed time interval for oil changes during operation. The oil change timing can only be determined based on the conditions at that time. During use, samples should be taken regularly to observe the color and cleanliness of the oil, and the physical and chemical properties of the oil, such as viscosity, acid value, and solids content in n-heptane, should be analyzed at set intervals. Oil change should be considered if any of the following conditions occur. a. The color of the oil has turned green. Or increase the color shade by 4 levels. b. The acid value exceeds 0.5 mgKOH/g c. The viscosity change exceeds 15% (+-) d. N-heptane impurities must not exceed 0.5%

GB11118 Hydraulic oil GB11120 Turbine oil GB12691 Air compressor oil GB5903 Industrial closed-gear oil

I want to know the answer to this question too. Could everyone please provide a more detailed answer?

OP, there are standards for the oil change intervals for various types of lubricants. For example, SHT0636 is the oil change interval for TSA turbines, while SHT0599 is the oil change interval for HM hydraulic oil, and so on. You can search for “oil change guidelines” on some websites dedicated to downloading standards, and you will find the information you need.

NB/SH/T 0538-2013 – Chinese name: Oil change criteria for light-load rotary air compressors. NB/SH/T 0137-2013 – Chinese name: Oil change criteria for ammonia-resistant turbine oils. NB/SH/T 0636-2013 – Chinese name: Oil change criteria for L-TSA turbine oils. NB/SH/T 0599-2013 – Chinese name: Oil change criteria for L-HM hydraulic oils. If you need anything, I can help you download it