ÉLÉMENTS DE COUPE ROTATIFS POUR OUTILS DE FORAGE ET OUTILS DE FORAGE

摘要

A cutter assembly, which may include a rotatable cutting element disposable within a pocket of an earth-boring tool, a sleeve configured to receive the rotatable cutting element, and at least one retention mechanism configured to secure the rotatable cutting element within the sleeve. The rotatable cutting element may include a substrate, a table, which may be comprised of a superhard, polycrystalline material disposed on a first end of the substrate, and a recess extending into a second, opposite end of the substrate. The sleeve may comprise at least one radial bearing surface, a backing support sized, shaped, and positioned to extend into the recess of the rotatable cutting element, and at least one axial thrust-bearing surface located on the backing support and positioned to contact the substrate within the recess.