How Many Kilograms is One Liter of Hydraulic Oil?
2 Answers
The density of hydraulic oil is approximately 0.7-0.9, so 1 liter is roughly 0.7-0.9 kg, meaning one liter of hydraulic oil is about 0.8 kilograms. Similarly, the specific gravity of hydraulic oil ranges from 0.7 to 0.9. Taking the specific gravity as 0.8, 1 liter of hydraulic oil equals 0.8 kilograms, 100 liters of hydraulic oil equals 80 kilograms, which is equivalent to 160 pounds. 100 liters of hydraulic oil equals 100 pounds. Hydraulic oil is a type of petroleum product. In hydraulic transmission, it serves as a working medium to transfer energy and perform control functions. It is made from refined petroleum lubricating oil fractions with additives such as antioxidants, rust inhibitors, and antifoaming agents. In its working state, it is incompressible and maintains good fluidity. Depending on usage requirements, it can be categorized into anti-wear, low-freezing, and fire-resistant hydraulic oils, among others. Hydraulic oils are divided into 7 types. According to the GB/T 7631.2-2003 classification, HH, HL, HM, HR, HG, HV, and HS hydraulic oils all fall under the mineral oil type hydraulic oils. The grades 46 and 48 represent HL hydraulic oil.
I frequently deal with hydraulic oil conversion issues. Simply put, it's density multiplied by volume. The density of common No. 46 hydraulic oil is approximately 0.87, so 1 liter equals 0.87 kilograms. To convert to jin (Chinese pound), multiply by 2, making it roughly 1.74 jin. However, note that actual density is significantly affected by temperature. I have an empirical formula: density decreases by 5% in summer high temperatures and increases by 3% in winter low temperatures. Last time when helping an agricultural machinery station change oil, I found that a certain brand of low-temperature hydraulic oil weighed 1.81 jin per liter. It's advisable to refer to the product manual, especially for precision equipment where estimation isn't recommended. If you're doing your own maintenance, having an electronic scale on hand is the most reliable.
