A BD545 Drive Sub is a component of a reverse circulation (RC) drilling hammer that is used to transmit rotational force from the drilling rig to the drill bit. It is a critical component of the RC drilling system and plays a vital role in ensuring the efficient and effective operation of the hammer.
The BD545 Drive Sub is typically made from high-strength steel and is designed to withstand the rigors of RC drilling. It is threaded on both ends to connect to the hammer and the drill bit. The drive sub is also equipped with a number of features that help to improve its performance, such as a wear-resistant coating and a high-capacity air passage.