2025-12-17 The drill rod (also known as the chisel or tool) is the hardest-working component of any hydraulic breaker. Because it is in direct contact with rock, concrete, and debris, it takes the brunt of the impact force. At SLYM Machinery, we understand that downtime costs money. When a drill rod fails, your entire operation stops. While high-quality manufacturing reduces defects, the lifespan of a drill rod often depends on how it is used and maintained. Here are the 8 most common problems operators face with hydraulic breaker drill rods, and expert tips on how to prevent them.