| 摘要 |
The invention relates to an assembly provided with a changing device for changing the nut (11) which retains a roll ring and which is located on a roll shaft (2), said roll shaft being mounted in an unsupported manner and having a thread (13) for the nut (11). The changing device comprises a threaded bush (50) provided with a thread (12a) that corresponds with the thread (13) of the roll shaft (2) in order to receive the nut (11). The changing device also comprises a centering device (49) which ensures an aligned placement on the roll shaft (2). In order to enable the nut (11) to be screwed onto the roll shaft (2) from the threaded bush (50) in the instance that the positions of their threads do not exactly match one another, the threaded bush is configured such that is can be displaced or prevented from turning in relation to the centering device (49) and/or in relation to the roll shaft (2). |
