How to Choose Between Wet and Dry Diamond Coring Motors? | AGP Power Tools FAQ

Choose a wet coring motor for drilling reinforced concrete, and choose a dry coring motor for drilling brick or similar relatively soft materials.Wet drilling and dry drilling are substantially different processes, and they have very different rpm requirements. In general, wet drilling requires more power for a given diameter, more downforce, and a much slower linear speed (m/s). Dry drilling requires less power, light downforce, and much higher linear speed. In addition, dry drilling absolutely requires a vacuum cleaner and works much better if there is a soft percussion function. Standard dry drilling motors and bits are not suitable for drilling reinforced concrete. This means that any given machine will need to have different gear ratios and other features to perform either wet or dry drilling. Even machines which can drill both wet and dry, will still be optimized for one of the two. For example, the DMC6, with its convertible vacuum dust port, can drill dry, but it is still primarily designed for wet drilling. While the DM52, with its soft percussion function and higher speeds is primarily designed for dry drilling of brick, but it can be used with water feed for small diameter wet drilling if desired. Choose AGP for Taiwan-made professional power tools, motor-driven equipment, and OEM ODM manufacturing support.