What is the main purpose of drill bit lubricants?

The main purpose of drill bit lubricants is to assist with chip removal during the drilling process. When drilling into metal or other materials, chips are produced as the drill bit removes material. These chips can accumulate around the drill bit, leading to increased friction and heat, which can negatively impact the efficiency of the drilling process and potentially damage both the drill bit and the workpiece.

By using a lubricant, the chips are more easily carried away from the cutting zone. This not only helps maintain the integrity and sharpness of the drill bit but also ensures that the cutting process remains smooth and effective. Keeping the drill bit and the area being drilled free from excess chips prevents binding or overheating, which can impair the drilling operation.

While cooling the drill bit, extending the life of the drill, and reducing noise levels might be secondary benefits of using lubricants, the primary function revolves around efficient chip removal, making it easier and more effective to drill into various materials.