Radial bearing

1. Radial bearing comprising an outer part opposite an inner part, the outer part and the inner part are rotatable relative to each other about a common longitudinal axis, the bearing comprises a bearing seat having a circumference, which is formed in the outer part or on the inner part and which is generally stationary relative to a radial load acting on the bearing seat in a load zone, the bearing seat has a load carrying width that varies in a direction parallel to the longitudinal axis about the circumference of the bearing seat, such that, starting from the load zone, the bearing seat has a first load carrying width and outside of the load zone the bearing seat has a second width that is narrower than the first load carrying width, whereby a mass and weight of the bearing seat are reduced outside of the load zone.

2. Radial bearing according to claim 1 , wherein the outer part comprises a housing, the inner part comprises a shaft mounted in the housing, and the bearing seat of variable width is formed on the shaft, and the radial load rotates with the shaft.

3. Radial bearing according to claim 1 , wherein the outer part comprises a housing, the inner part comprises shaft mounted in the housing, and the bearing seat of variable width is formed in the housing, and the radial load is generally stationary relative to the housing.

4. Radial bearing according to claim 1 , wherein the outer part comprises a hub, the inner part comprises an axle bolt supporting the hub, and the bearing seat of variable width is formed in the hub, and the radial load rotates with the hub.

5. Radial bearing according to claim 1 , wherein the outer part comprises a hub, the inner part comprises an axle bolt supporting the hub, and the bearing seat of variable width is formed on the axle bolt, and the radial load is generally stationary relative to the axle bolt.

6. Radial bearing according to claim 2 , wherein the shaft comprises an unbalanced weight shaft, having a center of mass arranged eccentric to the longitudinal axis due to one or more recesses on an outer periphery of the unbalanced weight shaft, and the recesses extend partially or completely on an other side of the longitudinal axis of the unbalanced weight shaft relative to the center of mass of the unbalanced weight shaft and are directly adjacent to the bearing seat of variable width.

7. Radial bearing according to claim 6 , wherein the unbalanced weight shaft is located in a device for balancing mass forces and/or mass moments of a reciprocating piston internal combustion engine with a crankshaft arranged parallel to the longitudinal axis of the unbalanced weight shaft and at least indirectly driving the unbalanced weight shaft for the reciprocating piston internal combustion engine.

8. Radial bearing according to claim 7 , wherein the device includes two of the unbalanced weight shafts rotating in opposite directions at twice a crankshaft rotational speed.

9. Radial bearing according to claim 6 , wherein the radial bearing comprises a needle bearing on the unbalanced weight shaft.

10. Radial bearing according to claim 9 , wherein a width of the needle bearing generally corresponds to a maximum width of the bearing seat of variable width allocated to the needle bearing, and a minimum width of the bearing seat is smaller than a length of needles of the needle bearing, and for lubricating the needle bearing, only an unpressurized lubricant spray is provided.

11. Radial bearing according to claim 9 , wherein the needle bearing is a needle sleeve formed without an inner ring.

12. Radial bearing according to claim 1 , wherein the bearing comprises a roller bearing and the width of the bearing seat narrows to zero outside of the load zone.

13. Radial bearing according to claim 12 , wherein the outer part comprises a housing, the inner part comprises a shaft mounted in the housing, and the bearing seat of variable width is formed on the shaft, and the radial load rotates with the shaft.

14. Radial bearing according to claim 13 , wherein the shaft comprises an unbalanced weight shaft, having a center of mass arranged eccentric to the longitudinal axis due to one or more recesses on an outer periphery of the unbalanced weight shaft, and the recesses extend partially or completely on an other side of the longitudinal axis of the unbalanced weight shaft relative to the center of mass of the unbalanced weight shaft and are directly adjacent to the bearing seat of variable width.

15. Radial bearing according to claim 14 , wherein the unbalanced weight shaft is located in a device for balancing mass forces and/or mass moments of a reciprocating piston internal combustion engine with a crankshaft arranged parallel to the longitudinal axis of the unbalanced weight shaft and at least indirectly driving the unbalanced weight shaft for the reciprocating piston internal combustion engine.

16. Radial bearing according to claim 15 , wherein the device includes two of the unbalanced weight shafts rotating in opposite directions at twice a crankshaft rotational speed.

17. Radial bearing according to claim 14 , wherein the roller bearing is a needle bearing on the unbalanced weight shaft.

18. Radial bearing according to claim 17 , wherein a width of the needle bearing generally corresponds to a maximum width of the bearing seat of variable width allocated to the needle bearing, and for lubricating the needle bearing, only an unpressurized lubricant spray is provided.

19. Radial bearing according to claim 17 , wherein the needle bearing is a needle sleeve formed without an inner ring.