Apparatus for forming an extended nip between a mating roll and a shoe roll for treating a product web, in particular a paper web, the roll axes of which lie in a loading plane E, having a mating roll which is supported via in each case one roll-end assembly on in each case one bearing in a first bracket, having a shoe roll which has stationary bearing journals which are supported in each case via a bearing in in each case one second bracket, one of the brackets being fastened to a stand, and having releasable devices for connecting the brackets to one another, the releasable connecting elements comprising connecting lugs which are guided displaceably in grooves of one of the brackets between a locked position and at least one unlocked position along connecting axes, each connecting lug having a slot which extends parallel to a connecting axis and through which fastening pins which can be inserted in the locked position into one and the other bracket can be inserted and can be brought into engagement with opposite force action faces of the respective slot.