Sealed coaxial input and output shafts
A seal system for coaxially aligned shafts includes an input shaft and an output shaft coaxially aligned with the input shaft. The seal system includes a seal adapter support housing coupled to the output shaft and a seal positioned between an end of the input shaft and an end of the seal adapter support housing. The input shaft is configured to rotate at a speed that is different than a speed of the output shaft.
1. A seal system for coaxially aligned shafts, the seal system comprising:
an input shaft;
an output shaft coaxially aligned with the input shaft, wherein the input shaft is configured to rotate at a speed that is different than a speed of the output shaft;
a seal adapter support housing coupled to the output shaft;
a seal positioned between an end of the input shaft and an end of the seal adapter support housing.
2. The seal system of claim 1 , further comprising a wear sleeve positioned between the seal and the input shaft.
3. The seal system of claim 1 , further comprising a wear sleeve positioned between the seal and the seal adapter support housing.
4. The seal system of claim 1 , wherein the seal adapter support housing is coupled to the output shaft via a nut that is coupled to the output shaft.
5. The seal system of claim 1 , wherein the input shaft comprises a bore that receives an end of the seal adapter support housing.
6. The seal system of claim 1 , wherein the seal adapter support housing comprises a bore that receives an end of the input shaft.
7. The seal system of claim 1 , wherein the seal comprises a cap and an elastomeric member.
8. The seal system of claim 7 , wherein the cap is seated on the seal adapter support housing.
9. The seal system of claim 7 , wherein the cap is seated on the input shaft.
10. The seal system of claim 1 , wherein the seal adapter support housing is coupled directly to the output shaft.
11. The seal system of claim 1 , wherein the output shaft comprises a carrier that forms part of a planetary gear system.
12. The seal system of claim 1 , wherein the input shaft is coupled to a sun gear.
13. The seal system of claim 1 , wherein the output shaft is coupled to a carrier of a planetary gear set.
14. A gearbox for a rotorcraft, the gearbox comprising:
a planetary gear set;
an input shaft coupled to a sun gear of the planetary gear set;
a mast coupled to a carrier of the planetary gear set and coaxially aligned with the input shaft;
a seal adapter support housing coupled to the mast; and
a seal positioned between an end of the input shaft and an end of the seal adapter support housing.
15. The gearbox of claim 14 , further comprising a wear sleeve positioned between the seal and the input shaft.
16. The gearbox of claim 14 , further comprising a wear sleeve positioned between the seal and the seal adapter support housing.
17. The gearbox of claim 14 , wherein the seal adapter support housing is coupled to the mast via a nut that is coupled to the mast.
18. The gearbox of claim 14 , wherein the input shaft comprises a bore that receives an end of the seal adapter support housing.
19. The gearbox of claim 14 , wherein the seal adapter support housing comprises a bore that receives an end of the input shaft.
20. A gearbox for a rotorcraft, the gearbox comprising:
a planetary gear set;
an input shaft coupled between an electric motor and a sun gear of the planetary gear set;
a mast coaxially aligned with the input shaft and comprising a carrier directly coupled to the planetary gear set;
a seal adapter support housing coupled to the mast; and
a seal positioned between an end of the input shaft and an end of the seal adapter support housing.