Reaming Shell

A diamond reaming shell, also called a reamer shell, features natural or synthetic diamonds and is designed to sit above the diamond bit. As an important part of the diamond drilling system, it connects the coring drill bit and outer tube, enlarges the hole to the required size, and stabilizes the drill bit base.

Its main function is to ream the hole to the correct constant specific diameter, which ensures adequate clearance for the core barrel and sufficient clearance for the new bit that replaces an old one. It also acts as a stabilizer for drill bits.