Transmission and method for producing different transmissions, in particular a range of transmissions
A transmission includes a first housing part, a second housing part connected to the first housing part, and bearings accommodated in the first housing part and supporting an input shaft in a rotatable manner. The input shaft projects through a recess that extends through the second housing part, and a cover part is connected to the first housing part. The cover part or a flange part inserted into the cover part accommodates a sealing system, which provides sealing with respect to the input shaft. The second housing part has an inlet for lubricating oil, which terminates in an axial bore being open with respect to the side of the first housing part facing the cover part, and in a second annular space. The opening of the axial bore facing the cover part is covered and/or sealed by the cover part, and rolling elements of two bearings at least also restricting and/or surrounding the second annular space together with the first housing part.
1. A transmission, comprising:
a first housing part, a first recess extending through the first housing part;
a cover part connected to the first housing part;
a second housing part connected to the first housing part;
an input shaft extending through the first recess of the first housing part; and
bearings accommodated in the first housing part and rotatably supporting the input shaft;
wherein the second housing part includes a lubricating oil channel in fluid communication with an axial bore provided the first housing part, the axial bore being open with respect to a side of the first housing part facing the cover part and being in fluid communication with a first annular space arranged in the first recess of the first housing part, an opening of the axial bore facing the cover part being covered and/or sealed by the cover part; and
wherein a first one of the bearings is arranged on a first axial side of the first annular space, a second one of the bearings is arranged on a second axial side of the first annular space axially opposite the first axial side.
2. The transmission according to claim 1 , wherein the bearings include (a) a fixed bearing that includes two angular contact bearings and/or tapered roller bearings and (b) a floating bearing.
3. The transmission according to claim 1 , wherein the first housing part projects through a second recess that extends through the second housing part.
4. The transmission according to claim 1 , wherein the cover part and the first housing part are connected to each other in an oil-tight manner with respect to the environment.
5. The transmission according to claim 1 , wherein the first housing part includes a second annular space arranged in the first recess, at least one of the bearings being arranged on a first axial side of the second annular space, a spacer bushing arranged on the input shaft being arranged on a second axial side of the second annular space axially opposite the first axial side of the second annular space.
6. The transmission according to claim 1 , wherein the first annular space includes a stepped bore of the first housing part having an axially aligned bore axis and an annular groove that encircles a step of the stepped bore.
7. The transmission according to claim 1 , wherein a compensation bore is adapted to conduct lubricating oil from the first annular space into a second annular space of the first housing part.
8. The transmission according to claim 7 , wherein rolling elements of at least one of the bearings and/or a first angular contact bearing of a fixed bearing are adapted to be supplied with the lubricating oil from the second annular space.
9. The transmission according to claim 8 , wherein the rolling elements of the at least one of the bearings are arranged in an oil sump formed in the second annular space.
10. The transmission according to claim 7 , wherein the second annular space is arranged as a depression in the cover part and is delimited both by the cover part and the first housing part.
11. The transmission according to claim 1 , wherein the transmission is configured so that lubricating oil passing through at least one of the bearings flows into an interior space of the transmission that accommodates at least one gear stage of the transmission.
12. The transmission according to claim 11 , wherein the transmission is configured so that the lubricating oil passing through at least one of the bearings flows into the interior space of the transmission that accommodates the gear stage of the transmission and into an oil sump located in the interior space.
13. The transmission according to claim 1 , wherein a collection duct is arranged in an interior space of the transmission and terminates in an inlet, the collection duct adapted to catch lubricating oil that drips down and/or splashes around and/or that drips down an inner wall of the second housing part and to conveys the lubricating oil to the inlet.
14. The transmission according to claim 1 , wherein two of the bearings are set apart from each other by a spacer bushing arranged on the input shaft.
15. The transmission according to claim 1 , wherein the bearings include a fixed bearing and a floating bearing that are set apart from each other by a spacer bushing arranged on the input shaft.
16. The transmission according to claim 1 , further comprising a sealing system accommodated by the cover part and/or a flange part arranged in the cover part, the sealing system sealing the input shaft, the sealing system including a first shaft sealing ring, a contactless seal, or a labyrinth seal.
17. The transmission according to claim 16 , wherein a grease-lubricated further shaft sealing ring is arranged axially next to the first shaft sealing ring and/or the sealing system includes a dust-protected shaft seal.
18. The transmission according to claim 1 , wherein at least one of the bearings includes a fixed bipartite bearing including two bearing parts and/or tapered roller bearings.
19. The transmission according to claim 18 , wherein each bearing part is arranged as an angular contact bearing.
20. The transmission according to claim 1 , wherein the bearings are braced with respect to one another by a shaft nut screwed onto a threaded region of the input shaft.
21. The transmission according to claim 20 , wherein a region covered by the shaft nut in an axial direction overlaps with a region covered by the cover part in the axial direction.