Abstract: A gearbox (70) has a pivot bearing (50) with an outer pivot bearing ring (1a) and an inner pivot bearing ring (1b). A filling groove (18) for rolling elements (16) is formed between the outer and inner pivot bearing rings. A tension shaft gear (40) with a central longitudinal axis (15) is mounted in the pivot bearing (50) and has a wave generator (10). An elastic flexspline (4) with an external gearing (3) and a circular spline (6) has an internal gearing (5). The flexspline (4) can be elliptically deformed by the wave generator (10) so that the external gearing (3) of the flexspline (4) engages with the internal gearing (5) of the circular spline (6) in opposite regions of a large elliptical axis. The circular spline (6) has a securing element (20) which blocks axial movement of the rolling elements (16).

Abstract: A rotary bearing (50), especially for harmonic gearing, comprising an outer bearing ring (1b) and an inner bearing ring (1a) arranged therein; whereby the inner bearing ring (1a) and the outer bearing ring (1b) are each provided with at least one receptacle (10, 11) through which, when the two receptacles (10, 11) are in a corresponding position with respect to one another, rolling elements (8) can be inserted through a receptacle opening (22) formed by the two receptacles (10, 11) into an anti-friction bearing between the bearing surface (7) of the inner bearing ring (1a) and the bearing surface (9) of the outer bearing ring (1b), wherein a guide ring (20) for the rolling elements (8) is arranged in at least one of the two receptacles (10, 11) between the receptacle opening (22) and the rolling elements (8).

Abstract: A rotary bearing (50), especially for harmonic gearing, comprising an outer bearing ring (1b) and an inner bearing ring (1a) arranged therein; whereby the inner bearing ring (1a) and the outer bearing ring (1b) are each provided with at least one receptacle (10, 11) through which, when the two receptacles (10, 11) are in a corresponding position with respect to one another, rolling elements (8) can be inserted through a receptacle opening (22) formed by the two receptacles (10, 11) into an anti-friction bearing between the bearing surface (7) of the inner bearing ring (1a) and the bearing surface (9) of the outer bearing ring (1b), wherein a guide ring (20) for the rolling elements (8) is arranged in at least one of the two receptacles (10, 11) between the receptacle opening (22) and the rolling elements (8).