GN 7237 Stainless Steel-Multiple-joint hinges inside, opening angle 180°


Description

Specification

Types

  • Type L: Fixing angle piece left
  • Type R: Fixing angle piece right
Stainless Steel NI
  • AISI 304
  • matte, tumbled finish MT
Friction bearing
Bronze
self lubricated

Information

Stainless Steel-Multiple-joint hinges GN 7237 are installed on the inside of flaps, hatches and doors to save space and ensure protection against vandalism. The hinges have a maximum opening angle of 180°, which provides optimal accessibility and avoids the blocking of escape routes by open doors, for example.
Use of this hinge type leaves housing exteriors free of attachments that do not match the design or that should be avoided entirely in the interests of fast and easy cleaning.
Stainless Steel-Multiple-joint hinges are generally used in pairs, meaning that one type L and one type R are used per opening. For higher loads, e.g. from large hatches, these can be supplemented with additional hinges of either type.

Technical information

On request

  • other opening angles
  • other fixing angle pieces
  • other materials
  • other finishes
  • other max. wall thicknesses
  • other lifting motion
  • with pneumatic spring connection

Installation position – pivot characteristics

The Stainless Steel-Multiple-joint hinges can be installed to the housing either with slotted holes on the fixing angle piece that are either perpendicular or parallel to the hinge axis. This results in the two pivot characteristics depicted.

Application examples

Adjustment and fastening options

The Stainless Steel-Multiple-joint hinges can be adjusted in three planes during installation. For example, this allows adjustment for tolerances or establishing of required compressive forces for seals.
Two planes can be adjusted via parallel or perpendicular slotted holes in the fixing angle pieces. In the third plane, position corrections can be made using the Stainless Steel-Spacer plates GN 2370 .
Stainless Steel-Plates with tapped holes GN 2372  as well as Stainless Steel-Plates with threaded studs GN 2376) are also available for fastening the hinges. The latter can be welded on or inserted through the wall from the outside and fastened in place. All accessory items are designed for use with both fixing angle pieces.

Design variants

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. Fixing angle pieces mounted to the housing with slotted holes perpendicular to the hinge axis:

l1s1 max.b1 max.s2 max.b2 max.s3 max.b3 max.
40131 ... ∞24101010
50191 ... ∞34171616
60251 ... ∞44242121
2. Fixing angle pieces mounted to the housing with slotted holes parallel to the hinge axis:

l1s4 max.b4 max.s5b5 max.s6 max.b6 max.
409271 ... ∞131010
5017351 ... ∞191616
6023451 ... ∞252121
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.

Construction assembly

Load capacity

The maximum load of the Stainless Steel-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.
Stainless Steel-Multiple-joint hinges inside, opening angle 180° GN 7237
GN 7237
Filter
Description l1 d h1 h2 h3 l2 l3 l4 l5 l6 l7 l8 l9 m1 m2 r s x y Weight
GN 7237-NI-40-L-MT 40 5.3 7.5 28 2.5 26 36 70.1 105.2 74.5 27.4 101.9 16 25 5 78.5 4 13 29.5 250
GN 7237-NI-50-L-MT 50 6.5 10 35 2.5 35 46 92.3 140 102.8 39.3 134.7 27.8 30 6 105 5 18 38 550
GN 7237-NI-60-L-MT 60 8.5 12.5 40 2.5 40 61 116.5 179.5 125.2 51.3 172.2 37.2 36 8 137.5 5 19 47 700
GN 7237-NI-40-R-MT 40 5.3 7.5 28 2.5 26 36 70.1 105.2 74.5 27.4 101.9 16 25 5 78.5 4 13 29.5 250
GN 7237-NI-50-R-MT 50 6.5 10 35 2.5 35 46 92.3 140 102.8 39.3 134.7 27.8 30 6 105 5 18 38 550
GN 7237-NI-60-R-MT 60 8.5 12.5 40 2.5 40 61 116.5 179.5 125.2 51.3 172.2 37.2 36 8 137.5 5 19 47 700