The trend towards greater spaciousness in architecture, and the builders' desire for more safety often increase the weight and size of doors. The heavier elements lead to increased stress on the doors and the hinge technology used. In addition to the height, width, weight and frequency of use, other important factors are the desire for freedom from barriers or more comfort. The use of additional functional elements, such as door closers or automatic swing-door operation, together with the use of door cladding for architectural or technical reasons, affect the load on the hinges used.
The new heavy-duty models VX 7729/160-4 VBRplus, VX 7939/160-4 VBRplus and VX 7939/160-4 FD VBRplus, with 400 kg load capacity, for the VARIANT VX range not only offer its existing benefits but also provide additional technical advantages. The increased material thickness, the specially welded knuckle and an optimised coordination with the receiver make the knuckle hinge system VARIANT VX quite simply the heavy-duty hinge. The receivers VX 7531 3D, VX 7532 3D and VX 7535 3D are suitable for use with block and casing frames, as well as blind frames. An optimised cover angle, together with a diagonal fastening and a counter-screwed adjusting spindle, protect against the high load values.