*mydirectindustry

Catalogs
Otto Ganter GmbH & Co. KG
Multiple-joint hinges

Multiple-joint hinges

Product catalog summary

General Notes
Multiple-joint hinges are designed for space-saving and vandalism protection, allowing up to 180° opening angles for flaps, hatches, and doors. They feature a zero-play, self-lubricated mechanism that lifts and pivots flaps, providing optimal accessibility without external attachments. These hinges are suitable for logistics, vehicle manufacturing, and industrial applications due to their high-quality materials and design.

Overview of Types
The document details multiple-joint hinges, including stainless steel and aluminum variants, specifying standard opening angles, load capacities, and maximum door or housing thicknesses. For instance, the GN 7231 stainless steel hinge has a 90° opening angle and a load capacity of 175 N axial and 750 N radial.

Design and Applications
Stainless steel hinges are ideal for flaps and hatches due to closely arranged joints, while aluminum hinges, with wider joint spacing, are suitable for heavy doors. These hinges are used in manufacturing, transport, and architecture for machine doors, safety mechanisms, and furniture construction.

Uses and Examples of Use
Multiple-joint hinges are applied in industries such as manufacturing, transport, and architecture, meeting requirements like large opening angles, concealed mounting, and high load capacity.

Stainless Steel-Multiple-joint Hinges
The GN 7231 hinge is designed for concealed installation with a 90° opening angle, suitable for thick doors. It can be used in pairs and supplemented with additional hinges for higher loads. The GN 7233 hinge offers a 120° opening angle for medium-thick doors, with similar installation and adjustment features.

Accessories
Accessories include stainless steel spacer plates and plates with tapped holes or threaded studs, allowing for easy mounting and adjustment in three planes.

Technical Instructions
The document includes mounting information, technical instructions, and details on accessories and special versions. It emphasizes checking design variants via CAD or test setups to ensure compatibility with specific applications.

Specifications
The hinges are made from Stainless Steel AISI 304 with a matte, ground finish, available in different sizes with varying load capacities and dimensions. The GN 7237 allows a maximum opening angle of 180°, while GN 7241 allows 90°.

Load Capacity
The load capacity per hinge pair varies by size, with axial and radial load capacities provided. For example, the 40 size has an axial load capacity of 175 N and a radial load capacity of 650 N.

Installation and Adjustment
Hinges can be installed with slots either perpendicular or parallel to the hinge axis, affecting pivot characteristics. They can be adjusted in three planes to accommodate tolerances and compressive forces for seals. Spacer plates and plates with tapped holes or threaded studs are available for additional fastening options.

Design Variants
The document outlines various design variants for sheet metal applications, including flush, inset, and mitered installations. It emphasizes the importance of a final function check using CAD or a test setup due to potential variations in installation conditions.

Ordering Information
The document provides a structured format for ordering, specifying material, size, type, and finish. Custom options are available upon request, including different materials, finishes, and dimensions.

Mounting Information
Hinges should be installed in pairs, aligned parallel to each other and the door or flap opening. Limiting and stop elements are recommended to prevent overextension beyond the intended opening angle.

Technical Instructions

Load Capacity: Depends on hinge cross-section, materials, and installation situation. Aluminum hinges are better for doors due to their larger cross-section, while stainless steel offers other advantages. Load should be evenly distributed among all hinges.
Mounting: Use screws of at least strength class 8.8 or A2-70, tightened with specified torque. Avoid using force during installation. If issues arise, adjust and align the hinges.
Adjustment: Hinges can be adjusted in two planes using slotted holes, and in the third plane using spacer plates GN 2370 for stainless steel and GN 7247.2 for aluminum hinges.
Modification: Modifications like polishing or welding can impair functionality. Test changes in a setup first.
Safety: Risk of injury exists when operating hinges; fingers can be caught or crushed.

Endurance Testing

Conducted with hinge pairs on standard doors, ensuring even load distribution and at least 15,000 cycles. Slight elastic deformation is permissible under maximum load.

Lubrication and Maintenance

Hinges have lifetime lubrication; no further lubrication is needed under normal conditions.

Operational Temperatures

Stainless Steel hinges: -200 °C to 280 °C. Aluminum hinges: -40 °C to 90 °C (briefly to 150 °C).

Accessories and Special Versions

Accessories include spacer plates and stainless steel plates with threaded studs or tapped holes for easier mounting.
Special versions can be developed for specific requirements, such as different opening angles, materials, or reinforced designs.

Catalog excerpts

Multiple-joint hinges Standard Parts. Ganter.

Open the catalog to page 1

Contents Multiple-joint hinges General notes Overview of types Design and applications Uses and examples of use Page Page Page Page Stainless Steel-Multiple-joint hinges Stainless Steel-Multiple-joint hinges GN 7231 Stainless Steel-Multiple-joint hinges GN 7233 Stainless Steel-Multiple-joint hinges GN 7237 → Page → Page → Page Accessories for Stainless Steel-Multiple-joint hinges Stainless Steel-Spacer plates GN 2370 → Page Stainless Steel-Plates GN 2372 → Page Stainless Steel-Plates GN 2376 → Page Aluminum multiple-joint hinges Multiple-joint hinge GN 7241 Multiple-joint hinge GN 7243 Multiple-joint...

Open the catalog to page 3

Multiple-joint hinges General notes Multiple-joint hinges are a new type of hinge offering freedom of design. Mounted inside the housing to save space and protect against vandalism, they allow an opening angle of up to 180° on flaps, hatches and doors. This ensures that the inside of the housing is optimally accessible. In general, the outside of the housing remains free of attachments that do not match the design or must be avoided entirely due to special requirements, such as ease of cleaning. Multiple-joint hinges replace existing, conventional hinge solutions while opening up entirely new...

Open the catalog to page 4

Multiple-joint hinges Overview of types Opening angle Load capacity max. door or housing thickness per pair in N (s or b) for design variants insert flush Material mitered Stainless Steel Stainless Steel Stainless Steel Highlights - Multiple-joint

Open the catalog to page 5

Multiple-joint hinges Design and applications Design Stainless Steel multiple-joint hinges Aluminum multiple-joint hinges Applications Stainless Steel-Multiple-joint hinges feature joints arranged in two levels that are very close to each other. This makes them particularly suited for applications involving flaps and hatches. The joint levels of the aluminum multiple-joint hinges are spaced more widely, making them suitable for use with doors, even heavy ones. | Highlights - Multiple-joint hinges

Open the catalog to page 6

Multiple-joint hinges Uses and examples of use Industries Machine and plant construction Machine doors, cleaning flaps Repair and maintenance hatches Medical and pharmaceutical industry Chemical and electrical industry Logistics and conveyor systems Bus and rail industry Agricultural and construction machinery Ship and yacht building Pivot mechanisms, shelves Safety mechanisms, conveyor hatches, adjusting units and guide systems Luggage hatches, storage compartments, rear and skirting hatches Cabin construction, supplemental equipment, motor covers, front hatches, repair and maintenance openings...

Open the catalog to page 7

Stainless Steel-Multiple-joint hinges concealed, opening angle 90° L Fixing angle piece, left R Fixing angle piece, right • Stainless Steel AISI 304 NI matte, ground • Friction bearing Bronze self lubricated • Stainless Steel characteristics → Main Catalogue Page 1489 • RoHS On request • other materials 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...

Open the catalog to page 8

GN 7231 Stainless Steel-Multiple-joint hinges continued 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. 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...

Open the catalog to page 9

GN 7231 Stainless Steel-Multiple-joint hinges continued 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: 2. Fixing angle pieces mounted to the housing with slots parallel to the hinge axis: 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...

Open the catalog to page 10

GN 7231 Stainless Steel-Multiple-joint hinges continued 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. Load capacity per hinge pair in N l1 Highlights - Multiple-joint hinges |

Open the catalog to page 11

Stainless Steel-Multiple-joint hinges concealed, opening angle 120° L Fixing angle piece, left R Fixing angle piece, right • Stainless Steel AISI 304 NI matte, ground • Friction bearing Bronze self lubricated • Stainless Steel characteristics → Main Catalogue Page 1489 • RoHS On request • other materials • other finishes • other fixing angle pieces • other opening angles • other max. wall thicknesses • other lifting motion Information Stainless Steel-Multiple-joint hinges GN 7233 are installed on the inside of flaps, hatches and doors to save space and ensure protection against vandalism. The...

Open the catalog to page 12

GN 7233 Stainless Steel-Multiple-joint hinges continued 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. 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...

Open the catalog to page 13

Multiple-joint hinges

Multiple-joint hinges

Catalog excerpts

All Otto Ganter GmbH & Co. KG catalogs and technical brochures