Roll device comprising a shaft and at least one roll ring arranged thereon

A roll device comprising:

• a shaft having a longitudinal axis;
• at least one roll ring arranged on the shaft;
• a collar rigidly fixed to the shaft and located on one axial side of the roll ring;
• a ring stop located on the other axial side of the roll ring, the ring stop being axially adjustable and lockable on the shaft and intended for clamping the roll ring against the collar;
• power clamping means for pre-stressing the roll ring toward the collar before the ring stop is adjusted to the clamping position against the roll ring;
• wherein the adjustable ring stop includes a support ring (6) axially secured to the shaft and defining a first end face, and an adjusting ring (10) defining a second end face;
• wherein said roll ring defines a third end face in contact with the adjusting ring, and the second end face adjustably interacts with one of the first end face or third end face, the adjustably interacting end faces having matching sloping flanks distributed as sawtooth-shaped segments over the circumferential extent of said interacting faces, the flanks having a small pitch in relation to the circumferential direction along the interacting faces.