How to cool and lubricate drills during drilling?

Whether we have a high-quality drill or just for hobby use, it is necessary to lubricate and cool it properly during drilling, otherwise we will cause more harm than good.

Why lubricate drills when drilling?

The main reason why it is necessary to lubricate drills during drilling is the fact that it significantly increases the service life of the drills and at the same time improves the quality and accuracy of the drilling process. This is just as important a factor as choosing a drill according to the drilling method and the material into which it will be drilled.

In our offer you can find various types of lubricants, the most widely used of which is our cutting paste for drilling and thread cutting CIMTAP.

This paste is recommended for use to cool drills during drilling and thread cutting with an emulsion formed by diluting this paste with water. It is easy to remove - just rinse with water or an alkaline cleaner. It can be used on the following materials: steel, steel alloys, stainless steel and nickel alloys, aluminum, brass and copper. It is not recommended for use on magnesium and magnesium alloys.

It is used in these 3 ways:
1) directly on the drill/tap with a brush or by direct immersion in the paste
2) a solution from 1:2 (50%) to 1:4 /25%) with water, for spray applications
3) a solution from 1:20 (5%) to 1:30 (3.3%) with water, for use on machines with multiple dilutions

Cooling drill bits during drilling:

Drill bits heat up during the drilling process, so they also need to be cooled, especially metal drill bits. The only way to avoid cooling and lubricating drill bits during drilling is to gradually pull out the drill bits and take breaks during drilling. When drilling continuously, it is necessary to cool the drill bits with water and lubricate them with special lubricants or pastes.

CAUTION: A hot drill bit must not be poured with anything, otherwise it will burst. Therefore, it is necessary to continuously drip machine oil through it.

Interesting fact: Wood drill bits are not cooled because the material would get wet and be damaged. Therefore, wood drill bits were designed so that cooling was not necessary.

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