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GN 7231 Stainless Steel-Multiple-joint hinges concealed, opening angle 90°

Photo

GN 7231 Stainless Steel-Multiple-joint hinges, concealed, opening angle 90° Type: L - Fixing angle piece left
Type: L - Fixing angle piece left
GN 7231 Stainless Steel-Multiple-joint hinges, concealed, opening angle 90° Type: L - Fixing angle piece left GN 7231 Stainless Steel-Multiple-joint hinges, concealed, opening angle 90° Type: R - Fixing angle piece right
Stainless-Steel

Product Family Stainless Steel

Standard parts made of rustproof stainless steel have been designed for use in the food sector, in the chemical industry, for aggressive ambient conditions or for outdoor use.

  • corrosion-resistant
  • precise fit
  • environmentally friendly
Show all Stainless Steel products

Product description

Information

Stainless Steel-Multiple-joint hinges GN 7231 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 90°, making them perfect for use with thick doors.

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 L type and one R type are used per opening. For higher loads, e.g. from large flaps or hatches, these can be supplemented with additional hinges of any type.

Specification

Stainless steelNI AISI 304
Matte, groundMT

Friction bearing
Bronze
self lubricated







RoHS

On request

other materials
other finishes
other fixing angle pieces
other opening angles
other max. wall thicknesses
other lifting motion

Technical drawing

3D
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GN 7231 Stainless Steel-Multiple-joint hinges, concealed, opening angle 90° sketch

Article options / Table

Type

LFixing angle piece left
RFixing angle piece right
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l1dh1h2h3l2l3l4l5l6l7l8l9m1m2rsxy
405,37,5282,52636789523,975,823,985,825577,541129
506,510352,5354610112637,297,937,2108,630697,551937
608,512,5402,5406112616363,9117,863,9138,636812752247

Build & Price

Open 3D configurator
Material

l1
Type


Finish

Installation position - pivot characteristics

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

Installation position - pivot characteristics GN 7231

Examples of use

Examples of use GN 7231

Adjustment and fastening options

Adjustment and fastening options

The Stainless Steel-Multiple-joint hinges can be adjusted in three planes during installation. For example, this allows tolerances to be adjusted or the required compressive forces for seals to be established. Two planes can be adjusted via the parallel or perpendicular slots 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, flush or mitered. The maximum wall thicknesses and bend sizes for sheet metal constructions given below arise from the respective installation type.

1. Fixing angle pieces mounted to the housing with slots perpendicular to the hinge axis:

MD7231_NA-34385-0
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l1s1 max.b1s2 max.b2 max.s3 max.b3 max.
40251 ... ∞1 ... ∞352626
50301 ... ∞1 ... ∞453636
60351 ... ∞1 ... ∞605050

2. Fixing angle pieces mounted to the housing with slots parallel to the hinge axis:

MD7231_NA-34387-0
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l1s4 max.b4 max.s5b5 max.s6 max.b6 max.
40351 ... ∞1 ... ∞252626
50451 ... ∞1 ... ∞303636
60601 ... ∞1 ... ∞355050

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 is lower than s or b, 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.

Example of an assembly

MD7231_AN-34374-0

Load capacity

The maximum load of the Stainless Steel-Multiple-joint hinge 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.

MD7231_BL-34379-0
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Load capacity
per hinge pair in N

l1


FA (axial)


FR (radial)
40175650
50175750
60150550

Selected Part (How to order)

Total (net)
62,65
plus VAT 11,90 €
gross 74,55 €
In stock
Weight: 0,267 kg
If this article is new in our product range, it may happen that details concerning weight are as yet not listed.
If you do need weight details, please contact our Sales Department!
Phone+49 7723 6507 - 0
RoHS: Yes
This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Please note our quantity discounts.
With a total value (net) per order:
from 175,00 € -> 10 % discount
from 275,00 € -> 20 % discount
from 375,00 € -> 30 % discount
With a total value (net) per order:
-> 15,00 Euro
for value of goods less than 25,00 €
-> 10,00 Euro
for value of goods from 25,00 to 50,00 €
All prices in accordance with our price list No. 53, valid from 1 May 2021, plus VAT only valid for Germany.

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GN 7231-NI-60-L-MTGN 7231-NI-40-L-MTGN 7231-NI-50-R-MTGN 7231-NI-40-R-MTGN 7231-NI-50-L-MTGN 7231-NI-60-R-MT

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