drilling through limestone is challenging.

In conclusion, pneumatic drilling machines play a vital role in various industries due to their efficiency, versatility, safety, and portability. They continue to evolve with advancements in technology, promising even more efficient and precise drilling solutions in the future. Whether it's a small-scale workshop or a large-scale construction site, these machines remain an indispensable tool in the hands of professionals worldwide. Their impact on productivity and job-site safety cannot be overstated, making them a cornerstone of modern drilling technology.

...

Functionality is paramount in the design of a coupling sleevecoupling sleeve. It must be able to handle not only the torque being transmitted but also any axial or radial loads that may occur. Some designs include rubber or metal elements to absorb shock and reduce noise, further enhancing the performance of the coupling system. Additionally, the sleeve should allow for easy installation and removal to facilitate maintenance and replacement when necessary.

...