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What aspect is affected when drill bit tapers get damaged?

  1. Drilling speed

  2. Cooling efficiency

  3. Alignment and locking capability

  4. Bit durability

The correct answer is: Alignment and locking capability

When drill bit tapers get damaged, the alignment and locking capability of the drill bit within the spindle or drill chuck is significantly affected. The taper is designed to fit securely into the corresponding taper of the drill spindle, ensuring that the bit remains stable during operation. If the taper is damaged, it may not sit properly in the holder, leading to misalignment. This misalignment can cause excessive vibration or even result in the drill bit loosening and coming out during drilling, which can jeopardize both the safety of the operation and the quality of the hole being drilled. In this context, although drilling speed, cooling efficiency, and bit durability can also be influenced indirectly by the performance of the drill bit, the primary concern related to a damaged taper is the ability to maintain proper alignment and secure locking within the machine. Therefore, focusing on how this affects the operational integrity of the drilling process underscores the importance of maintaining a well-functioning taper.