Rotor disk for a turbo machine

1. A rotor wheel for a turbomachine, comprising:

a rotor wheel face;

a shrink collar adjoining the rotor wheel face for shrinking onto a rotor of the turbomachine;

a circumferential groove between the rotor wheel face and the shrink collar; and

at least one bore hole configured to receive a shrink collar pin, the bore hole arranged between the circumferential groove and a face of the shrink collar.

2. The rotor wheel according to claim 1 , wherein the shrink collar is arranged at the rotor wheel face, which is a downstream rear wall of the rotor wheel.

3. The rotor wheel according to claim 1 , wherein the shrink collar is constructed integral with a rotor wheel disk of the rotor wheel.

4. The rotor wheel according to claim 1 , wherein the circumferential groove is formed at the rotor wheel face.

5. The rotor wheel according to claim 1 , wherein the groove depth in radial direction is:

at least 0.1 times a radial height of the shrink collar; and

at most 0.99 times a radial height of the shrink collar.

6. The rotor wheel according to claim 5 , wherein the groove depth in radial direction is:

at least 0.3 times the radial height of the shrink collar; and

at most 0.7 times the radial height of the shrink collar.

7. The rotor wheel according to claim 5 , wherein the groove depth in radial direction is:

at least 0.5 times the radial height of the shrink collar; and

at most 0.65 times the radial height of the shrink collar.

8. The rotor wheel according to claim 1 , wherein the circumferential groove is rounded on at least one of its radially inner side and its radially outer side.

9. The rotor wheel according to claim 1 , wherein the circumferential groove is produced by one or more of primary shaping, deformation, and cutting.

10. The rotor wheel according to claim 9 , wherein the cutting is cutting with a lathe tool.

11. The rotor wheel according to claim 1 , wherein the circumferential groove is stepped radially one or more times.

12. The rotor wheel according to claim 1 , wherein the circumferential groove has one of a curved lateral surface and a lateral surface that is inclined with respect to an axis of rotation of the rotor.

13. The rotor wheel for a turbomachine according to claim 1 , wherein the rotor wheel is a radial turbomachine.

14. A turbomachine, configured as a radial turbomachine, having a rotor wheel comprising:

a rotor wheel face;

a shrink collar adjoining the rotor wheel face for shrinking onto a rotor of the turbomachine;

a circumferential groove between the rotor wheel face and the shrink collar; and

at least one bore hole configured to receive a shrink collar pin, the bore hole arranged between the circumferential groove and a face of the shrink collar.

15. A method for producing a rotor wheel comprising:

a rotor wheel face;

a shrink collar adjoining the rotor wheel face for shrinking onto a rotor of the turbomachine; and

a circumferential groove between the rotor wheel face and the shrink collar, the method comprising:

forming the circumferential groove by cutting with a lathe tool; and

inserting at least one shrink collar pin in a hole in the shrink collar.