Gear Up to Ace the Red Seal Machinist Exam 2026 – Rev Your Engines for Success!

Overheating due to excessive feed rate or inadequate coolant is a common cause of drill bit failure in machining. When the feed rate is too high, the drill bit engages the material too aggressively, resulting in increased friction and heat generation. If there is not enough coolant to dissipate this heat, it can lead to the drill bit becoming overheated. This excessive heat may cause the cutting edges of the tool to lose their hardness, resulting in rapid wear and potentially leading to the bit breaking or deforming.

In many machining operations, maintaining an optimal feed rate along with an adequate flow of coolant is crucial for prolonging tool life and ensuring effective cutting performance. The coolant not only reduces heat but also helps to wash away chips and debris from the cutting area, further protecting the integrity of the drill bit. Addressing both factors — correct feed rate and proper coolant application — is essential for preventing drill bit failure.