GN 7243 Multiple-Joint Hinges Aluminum, Concealed, with Opening Angle of 120°

Multiple-joint hinges can be installed on the housing with the slotted holes of the mounting flanges that are either perpendicular or parallel to the hinge axis. This results in the two pivot characteristics depicted.

Multiple-joint hinges can be adjusted in three planes during installation. For example, this allows compensation for tolerances or establishing of required compressive forces for seals.
Two planes can be adjusted via parallel or perpendicular slotted holes in the mounting flanges. In the third plane, position corrections can be made using GN 7247.2 spacer plates.
GN 7247.4 spacer plates with tapped holes as well as GN 7247.6 mounting plates with threaded studs are also available for mounting the hinges. The latter can be welded on or inserted through the wall from the outside and fastened in place.
The holes d₂ are used to accomodate clamping or positioning pins, making it easy to position the hinge. This also prevents unintended turning or slipping under load. The pins cannot be removed for subsequent adjustment.

Flaps, hatches and doors can be inset, surface-mounted or mitered. The maximum wall thicknesses and bend sizes for planned sheet metal constructions arise from the respective installation type.

1. Mounting flange mounted to the housing with slotted holes parallel to the hinge axis:

2. Mounting flange mounted to the housing with slotted holes perpendicular to the hinge axis:

The design variants shown represent standard installation conditions. If the installation position of the hinge is changed or one of the two wall thickness dimensions s or b are lower, the maximum achievable dimensions change independently of each other. This makes it possible in some cases to work with larger wall thickness dimensions than those specified with the same hinge size. A simple design check via CAD or a test setup is therefore recommended.

The maximum load of the multiple-joint hinges specified below applies to the standard use cases and serves for orientation in the case of deviating applications. The resulting forces lead to slight elastic deformation, which can be compensated for by means of the adjustment options, if necessary.