For a long time in workshops it has always been recommended, or as an acquired good practice, to use lubricants when machining a part, but why lubricate during machining? If your answer is reduced exclusively to reducing the temperature, I invite you to know the reasons for lubrication in machining.


In low-speed cutting, the friction on the attack face is reduced, which increases the cutting angle, thins the chip and curves more sharply, all this translates into a decrease in power consumption.

At higher speeds when the adhesion zone develops, it is reduced, additionally the friction is decreased and a better surface finish is generated.


Due to the high speeds and the concentration of the shear, the temperature in the cutting zone is generally not affected. However, the temperature of the chip is reduced as it is released from the cutting zone and cools the workpiece. In addition, the volumetric temperature of the tool is reduced. These temperature reductions allow cutting at higher speeds. A coolant is only useful when it is applied liberally to the entire cutting area to avoid extreme temperature fluctuations in the tool, especially in interrupted cuts such as milling.

Chip removal

Sometimes this is the most ignored function but one of the most important, the cutting fluid helps us to remove the chips from the cutting area, thus preventing the tool from jamming.

All these recommendations help extend the useful life of your tools and machines. If you use second-hand machinery, it is advisable to carry out these procedures to keep its operation effective. At Glomacht we care about proper equipment care.