A retrac bit is a type of drill bit that has a design that allows it to be retrieved from the hole after drilling. This type of drill bit is commonly used in underground mining operations, where the drill bit is inserted into a borehole and then retrieved after drilling is completed. This feature enables the re-use of the bit for multiple drilling operations.
Retrac bits are characterized by having a threaded connection on the shank of the bit that allows it to be screwed into a drill steel. The threaded connection enables the bit to be easily attached and detached from the drill steel. They are typically made from tungsten carbide, which is a hard and durable material that can withstand the high stresses of drilling.
Retrac bits come in different sizes and designs, depending on the intended use and the type of rock or material being drilled. Some retrac bits are designed for soft rock, while others are designed for harder rock. Some retrac bits are designed for drilling at low speeds, while others are designed for drilling at high speeds.
It is important to use the correct retrac bit for the task and to make sure that the bit is well-maintained, with sharp cutting edges and a tight fit to the drill steel. It is also important to follow proper drilling techniques and safety guidelines when using a retrac bit to avoid accidents and injuries.