Abstract: The cutter joint is formed on a trunnion by a peripheral radial-trust rolling bearing whose internal ring (4) together with rolling bodies (6) and a cage (7) are arranged on the trunnion (2) and locked thereon by snap ring (15), an external bearing ring (5) is inserted into the cutter (3) and locked therein by a circlip (12). The end radial-trust rolling bearing comprises an external ring (9) inserted into the cutter and internal ring (8) which is arranged on the trunnion together with rolling bodies (10) and cage (11) in such a way that it is slidable and trusted to the trunnion through a spring (16). In one embodiment, the inventive bearing assembly comprises a trust needle bearing arranged between the cutter and the trunnion through an axial spring.