Disclosed is an electronic motor with two bearings. The motor is structured so that, when loaded, the majority of the load (e.g., a radial load) is borne by one of the bearings. The bearing that bears a greater load may be larger and, thus, better suited for a heavy load. In some embodiments, the larger bearing may include rolling elements that have respective radii larger than respective radii of rolling elements of the other bearing by a ratio of at least 1.5 (150%). In some embodiments, the larger bearing may have an outer race with a radius that is greater than a radius of the outer race of the smaller bearing by a ratio of at least 1.5. In some embodiments, the motors may include a third bearing between the two bearings. The third bearing may reduce vibration in the motor.

A wheelset bearing for a rail vehicle includes a rolling bearing assembly (7) with three bearing rings (4, 8, 9), specifically two inner rings (4, 8) provided for connection to a wheelset shaft (2) and one outer ring (9) provided for connection to a housing (6). The rolling bearing assembly (7) is designed as a quadruple-row angular contact ball bearing in an O arrangement, and two rolling element rows (16, 17) are provided contacting a first inner ring (4) in order to absorb axial forces in a first direction and two rolling element rows (18, 19) are provided contacting a second inner ring (8) in order to absorb forces in the opposite axial direction. A rail vehicle with such an arrangement is also provided.

A rolling bearing provides a first ring and a second ring capable of rotating concentrically relative to one another, at least one row of radial rolling elements radially interposed between raceways of the rings, and at least one row of axial rolling elements axially interposed between raceways of the rings. The rolling bearing further provides, axially on each side, at least one row of rolling elements radially interposed between raceways of the first and second rings.

A motor vehicle drive wheel assembly comprising a fixed subassembly comprising two outer raceways; and, a rotating subassembly comprising a first inner race, a second inner race and two rows of balls arranged in two pitch planes PP1 and PP2. The second inner bearing race has an outer diameter, measured in a section plane perpendicular to the axis of rotation and located between the first pitch plane and the second pitch plane, at a measurement distance DM of the first pitch plane, which is greater than a given threshold value VS.

A motor including a rotor, a first arm, a mount, a stator, a first bearing, and a second bearing. The motor is configured to rotate the rotor. The mount connected to the first arm. The stator coupled to the mount. The first bearing located between and connecting the rotor to the stator. The second bearing located between and connecting the rotor to the mount. The first arm prevents movement of the stator and the mount.

A bearing (8) comprising a first row of rolling elements (10, 10a, 10b, 12, 12a, 12b) having a first pressure center (14) and a first contact angle, and a second row of rolling elements (10, 10a, 10b, 12, 12a, 12b) having a second pressure center (14) and a second contact angle, whereby said first pressure center (14) is arranged to coincide with said second pressure center (14) and whereby said first contact angle is the same as said second contact angle.

A bearing having an inner ring, an outer ring, and at least one seal arranged between the rings. The bearing including a protective cover that delimits an annular space into which the seal extends and provides an outer annular portion and at least one inner portion disposed radially facing and at a distance from one another, and a connecting annular portion linking the outer annular portion and the inner portion; and at least one means for fixing the protective cover onto the inner ring, the fixing means passing through the outer and inner portions of the protective cover and cooperating with the inner ring.

The bearing provides an outer ring and an inner ring capable of rotating concentrically relative to one another. At least one of the inner and outer rings are split into a plurality of successive circumferential ring segments. Each pair of adjacent successive ring segments of the split-ring is secured together with at least one fixing plate. The fixing plate is disposed inside a first groove disposed on one of the ring segments and a second groove 38 disposed on the other ring segment. The fixing plate is set back or flush with at least the surface of each of the ring segments from which the first or second groove is formed.

A rolling bearing having concentric bearing rings supported on one another rotatably with respect to each other by means of at least one row of rolling elements and have bearing races for the rolling elements of the at least one row of rolling elements. The invention further relates to a material transfer- or construction machine, such as a crane or cable excavator, having such a rolling bearing. Providing different bearing race corrections in different angular sectors of the bearing rings and/or providing the bearing race correction only in a fraction of the circumference of the bearing rings is advantageous over the conventional use of a bearing race correction that is constant over the circumference. A bearing race correction that is limited to one sector or that is different from sector to sector, or that is not constant over the circumference, enables the bearing rings to adapt to expected loads.

An open-centered large rolling bearing having two concentric bearing rings, which are supported against one another in the axial direction of the rolling bearing by means of at least two axial bearings, which are arranged on opposite end faces of a bearing ring. In the radial direction, the bearing rings are supported against one another by at least three radial bearings, which are arranged on inner and outer circumferential sides of a bearing ring.