Water In Hydraulic Oil Limit

The degree of bubbling is directly proportional to the amount of water in the oil sample.

Water in hydraulic oil limit. Most industrial oils such as hydraulic fluids turbine oils etc can hold as much as 200 to 600 ppm of water 0 02 to 0 06 percent in the dissolved state depending on the temperature and age of the oil with aged oils capable of holding three to four times more water in the dissolved state than new oil. Reduces lubricating film strength which leaves critical surfaces vulnerable to wear and corrosion. Refer to figure a below to approximate the amount of water present. Anyone has success story by other means heat.

Note that if hydraulic oil is cloudy it indicates that a minimum of 200 300 ppm of water is present. 5 may 14 13 54 mil h 83282 water limit 100 ppm. I recently audited a hydraulic system with cloudy oil that was found to contain greater than 1 10 000 ppm water. If there is water in the oil sample the response will occur immediately.

This is calculated as 290ppm. The water remains in 150 ppm range. Using this method for lubricants with a saturation limit below 1 000 ppm should be avoided. The saturation level is the amount of water that can dissolve in the oil s molecular chemistry and is typically 200 300 ppm at 68 f 20 c for mineral hydraulic oil.

Once the amount of water has exceeded the maximum level for it to remain dissolved the oil is saturated. Determination of water according to the karl fischer method to precisely determine the water content within lubricant or hydraulic oils is not easy. Note that if hydraulic oil is cloudy it indicates that a minimum of 200 300 ppm of water is present. The maximum limit is reached when water droplets appear inhomogeneous.

Oil impurities can lead to increased wear and affect the operation of hydraulic systems for example. Reduces filterability and clogs filters. On the other hand there are also parameters that can be comprehensively assessed with absolute limit values. Karl fischer coulometric titration astm d.

Schroeder has w media filter to remove water but it did not work in our system. However knowing the oil type and the water content at a saturation temperature the water content to give saturation at the bearing test temperature can be realistically estimated. Depletes some additives and reacts with others to form corrosive by products which attack some metals. Using a clean dropper place one drop of oil on the hot plate.

Increases air entrainment. Any way to reduce the water content from 150 ppm to below the limit. Water in hydraulic oil has a number of negative effects. Increased water content can cause corrosion and or cavitation different saturation limits for the different oil types.