GN 7247 Multiple-Joint Hinge Aluminum, Concealed, with Opening Angle of 180°

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Product description

Information

The GN 7247 multiple-joint hinge is installed on the inside of flaps, hatches and doors to save space and ensure protection against vandalism. The hinge has 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.

Multiple-joint hinges are typically used in pairs. For higher loads, e.g. from large doors, these can be supplemented with additional hinges. Four reinforced washers are supplied for assembly, which can be used with mounting screws of thread size M6.

Specification

Body
AluminumAL
Anodized finish, natural colorELEL

Hinge pins / washers
Stainless steel AISI 304

Friction bearing
Plastic
  • Self-lubricated
  • Temperature resistant from -40 °F to +194 °F (-40 °C to +90 °C)







RoHS compliant

On request

Other finishes / colors
Other mounting flanges
Other opening angles
Other max. wall thicknesses
Other lifting motion

Technical drawing

3D
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GN 7247 Aluminum Multiple-Joint Hinge, Concealed, with Opening Angle of 180° sketch

Part Options / Table

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Metric

Dimensions in: Inch (change to Metric)
l1d1d2h1h2l2l3l4l5l6l7l8l9l10m1m2m3m4m5rsxy
2.950.260.162.361.181.751.182.013.964.592.931.162.911.062.400.311.571.811.103.660.281.021.14

Build & Price

3D Product Configurator
Material

Length l1
Finish / Color
EL

Installation position – pivot characteristics

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.

MD7247_NA-16456-0

Application examples

MD7247_NA-22788-0

Adjustment and mounting options

MD7247_NA-22863-0

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.

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

MD7247_NA-16458-0
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l1s1 max.b1s2b2 max.s3 max.b3 max.
7515241 ... ∞81111

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

MD7247_NA-16460-0
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l1s4 max.b4s5b5 max.s6 max.b6 max.
7581 ... ∞24151111

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 example

MD7247_AN-22777-0

Load capacity

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.

MD7247_BL-22827-0
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Max. load capacity
per hinge pair

l1


FA (axial)


FR (radial)
75146 lbf (650 N)169 lbf (750 N)

Selected Part

Total US Dollars (net)
$304.94
Call / Email for Delivery Time
Please note our quantity discounts (US Dollars).
MinMaxPrice
19$304.94
1024$279.53
2549$254.12
≥ 50$228.71
Prop 65: Not compliant
WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
RoHS: Compliant
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)).
Weight: 0.705 lbs
If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: 800-877-8351
All Prices are in US Dollars. Taxes Not Included.

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Our service team is available from Monday to Friday between 7:30 AM and 5:00 PM Central Time: 800-877-8351

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GN 7247-AL-75-EL

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