Understanding Lubricant Toxicity

Cutting Oil

One of the most important things needed in metal cutting is coolant in the form of cutting oil. The purpose of cutting oil is to reduce the friction caused during the cutting process which in turn will reduce tool wear, improve the quality of the finish and increase the efficiency of the cutting process. Cutting oils come in two variants; water-based and neat. 


As the name suggests, water-based cutting oil is a solution of oil in water. Water is a good heat conductor and extracts heat from the cutting process excellently. However water by itself also brings about rush and corrosion. This is why a certain percentage of soluble oils are mixed with the water to create an emulsion effect which is able to provide the cooling properties and lubrication. This form of cutting oil carries corrosion inhibitors to reduce natural processes on the applied metals.


Neat cutting oils on the other hand are made up of undiluted oil. It is however a mixture of multiple oils and chemicals that bring out the properties required to serve as an effective cutting oil. While pure oil serves as an excellent lubricator, it is bad for cooling. Neat cutting oils are formulated with mineral oils and other additives. Often used for light to heavy machining, neat cutting oils produce oil mist and oil smoke that may affect cleanliness at a workplace. 


Both water and neat cutting oils have a range of functions that suit various machineries and metal cutting works. Always research the purpose before purchasing the appropriate cutting oil to ensure maximum effectiveness and machine longevity. Head to Idemitsu to view our selection of cutting oils that have proven functions and can benefit your usage.