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Door hinges

GU door hinges for project, main and secondary entrance doors

Door hinges (pivots, hinges) connect the door to the door frame or frame and facilitate the swing motion of the door.

Since the 1950s drill-in hinges have become more and more established and are used instead of hinges with mortise, route-in or screw-on plates. Replacing the former mortise-wing plate with round positioning pins for drilling in was a ground-breaking development as the positioning pins can be industrially fabricated and allow the door to be installed in a much more rational cost-effective manner.

Door hinges normally consist of three elements: the lower hinge part which is fastened to the door frame or frame, the top hinge part which is fastened to the door leaf and the pin which represents the rotation axis.

Many versions of two and three-part drill-in hinges are available for room doors. Many more versions are required for project doors to accommodate the frame profiles, material, load-bearing capacity and loads at each door, for which suitable hinges are required. The various door profiles require suitable hinge parts.

The demand for concealed door hinges is high. This is because these hinges are not visible on unrebated doors when they are closed.

Door hinges are exposed to high axial and radial loads. The hinge plates must also be able to absorb the dynamic forces arising as a result of impacts or mishandling of the door leaf. The hinge mounts must be adapted to the various materials of a door frame. They are screwed to or recessed in timber frames, and are welded onto steel door frames. Hinge mounts that can be adjusted in three dimensions and allow the door leaf to be aligned following installation are normally used.

Adjustment in all directions whenever possible is a virtually indispensable requirement for door hinges, as this means doors can also be made easy to use once again after years of heavy use.

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Standards

  • Door and window hinges: DIN EN 1935 Architectural hardware – Single-axis hinges for doors and windows
  • Door hinges: DIN 18268 Architectural hardware – Door hinges
  • Hinges for fire rated doors: DIN 18272 – Fire stops; hinges for fire rated doors

Project hinges for doors in escape and rescue routes

The purpose of escape and rescue routes is to protect and save people. The stringent requirements in relation to functionality and safety require a permanent rotatable connection between door frame and door leaf. Gretsch-Unitas complements the intelligent combination of mechanics and electronics of the locks and door hardware for emergency exit and panic doors with innovative hinge technology – from concealed hinges through to barrel hinge solutions in a range of finishes – for use on elements made of timber, PVC, and metal. Perfectly compatible components from one source guarantee utmost security.

Certification and security

Safety is not only the first priority at escape doors. GU hinges meet the high requirements up to resistance class RC 3 in different system tests to EN 1627–1630. Our screw-on hinges for PVC or metal doors fulfil the SKG certification for outward-opening doors required in the Netherlands with up to three stars.

Design requirements for the hinge-side

Not only the door construction but also the door hinge design makes a decisive contribution to the appearance of a door. GU offers hinge solutions ranging from roll-type hinges through to concealed hinges in various finishes.

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Products

Door hinges for timber elements

Profil Holz

Concealed hinge technology

GU C 616-18 FD 3D

  • Provides a modern linear door design, so the clean lines of the door are not interrupted
  • Can be used for doors with overlap gasket
  • Can be quickly and conveniently adjusted in three dimensions
  • Can continuously withstand high loads
  • Maintenance-free bearing system
  • Continuous sealing level (impact gaskets)
GU C 616-18 FD 3D

Elegant steel hinge roll

GU M 516 3D: adjustable mill-in hinges for doors with small overlap heights

  • Increased burglar resistance, can be used for system tests according to EN 1627 et seq./RC 3
  • CE-certified according to EN 1935, can be used for doors in escape and rescue routes
  • Can be quickly and conveniently adjusted in three dimensions and independently from each other
  • Stable hinge seating during and after setting the door hinges
  • Can continuously withstand high loads, 160 kg load-bearing capacity
  • Individual gasket-guide can be used for almost all rebate systems
GU M 516 3D

Door-hinge covers available in different finishes

GU M 416 3D: mill-in hinge

  • Increased burglar resistance, with secured pins as standard
  • CE-certified according to EN 1935, can be used for doors in escape and rescue routes
  • Stable, straight hinge seating during and after setting the door hinges
  • Can continuously withstand high loads, 160 kg load-bearing capacity
  • Door-hinge covers available in different finishes
  • Individual gasket-guide can be used for almost all rebate systems
  • Can be quickly and conveniently adjusted in three dimensions and independently from each other
GU M 416 3D

Quickly installed

GU D 312, GU D 21x and GU D1xx series: adjustable drill-in hinges

  • Simple application
  • Fast installation
  • Can be quickly adjusted in three dimensions
  • Stable hinge seating during and after setting the door hinges
  • Developed also for use with small overlap heights
  • Maintenance-free bearing system

 

GU D 312

GU door hinges for PVC elements

Profil Kunststoff

The barrel hinge for commercial and residential buildings

GU R 816 3D: barrel hinge for doors exposed to high loads

  • Slender and round – hinge diameter of only 22 mm – for high-quality PVC doors in commercial and residential buildings
  • The hinge pin is proof against being sawn through as standard
  • Increased burglar resistance, SKG-certified (two stars)
  • CE-certified according to EN 1935 in the highest hinge grade, can be used for doors in escape and rescue routes
  • Can continuously withstand high loads, tested up to hinge grade 14, 160 kg load-bearing capacity depending on profile
  • Direct screwing using special self-tapping screws, the sealing level is not interrupted
  • Optional fastening options with fastening claw or fixing plate where the sealing level is not interrupted
  • Can be quickly and conveniently adjusted in three dimensions
Rollenband

Can reliably and continuously withstand high loads

GU G 816 F 100: screw-on hinge

  • Hinge pins made of hardened, corrosion-resistant steel
  • The hinge pin is proof against being sawn through as standard
  • Increased burglar resistance, SKG-certified (two stars)
  • CE-certified according to EN 1935 in the highest hinge grade, can be used for doors in escape and rescue routes
  • Can continuously withstand high loads, tested up to hinge grade 14, 160 kg load-bearing capacity depending on profile
  • Same hole pattern for GU G 816 F 100 and GU 812 F 100
  • Fixing options with GU Bridge or additional leaf-part support pins for GU G 816 F 100
  • Can be quickly and conveniently adjusted in three dimensions
Aufschraubband

Door hinges for aluminium elements

Profil Aluminium

Slender but strong

GU A 316 3D: screw-on hinges for doors exposed to high loads

  • Can be used universally for metal doors in commercial and residential buildings
  • Increased burglar resistance, SKG-certified, up to three stars
  • CE-certified according to EN 1935, can be used for doors in escape and rescue routes
  • The hinge design is retained, no roll offset following lateral adjustment
  • Can continuously withstand high loads, tested up to hinge grade 14, 160 kg load-bearing capacity
  • Fast installation times thanks to detachable direct screwing
  • Can be quickly and conveniently adjusted in three dimensions
GU A 316 3D

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