SGFlex-3F-Series
The perfect Cord Reinforced Coupling System
.The SGFlex-3F coupling system incorporates industry proven SGFlex discs with solid steel flanges or flywheel combinations to provide an integrated solution to our customers.
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More InformationRobust and resistant
SGFlex discs are very robust and resistant. They are made of extremely resilient cord inlays and high quality elastomer to ensure reliable power transmission in any application.
Ideal for compensating misalignments
SGFlex discs are torsionally flexible, non-switching couplings. They are used to compensate for radial, axial and angular misalignments of rotating of rotating parts, dampen vibrations in the drive train and minimize peak loads. Common applications are pump systems, hydraulics drives and conveyor drivelines.
Also ideal for special machines thanks to high power density
The high power density and strength of SGFlex discs make these discs ideal for all types of specialized machinery, such as wood chippers, shredders and rock crushers.
Made of high quality forged steel
The steel flanges are made of high quality forged steel and their innovative design meets all common as well as custom requirements for shaft-hub connections.
Customization
The 3-arm flanges can be easily machined and adapted to your individual requirements, for example for keyway or splined shaft connections. In addition, the flanges can accommodate very large shafts due to the unique triangular contour.
The Components
Robust. Lightweight. Flexible. This is the short description of our SGFlex-3F coupling. It consists of the SGFlex disc, which has been used a hundred million times, and steel flanges made of high-quality forged steel. The individual components are explained in more detail below.
SGFlex Disc
Power is transmitted almost exclusively via the vulcanised-in cord inlays (Tenpu® fiber technology) by the unique SGF tension-forceprinciple.
The cord inlays serve to damp torque peaks and to absorb start-up impacts. The rubber takes on a supporting and protective function for the cord inlays and serves to isolate noises due to the interruption of the structure-borne noise path.
Common applications
- For connecting combustion engines and generators, including any related drive equipment in power plants and power stations
- As a flexible disc in drivetrain such as vibrating screens and test benches
- For movement compensation and vibration absorption between engines and hydraulic pumps in forklifts, cement trucks or other similar equipment
- As a flexible connecting element in mixers, pumps and agricultural machinery
- For connecting the transmission and drive shaft in road, rail, mining, military or marine applications
Flange variants
The steel flanges are made of high-quality forged steel and, thanks to their innovative design, meet all common as well as customer-specific requirements for shaft-hub connections.
All flanges are corrosion-protected by a galvanic coating, which ensures excellent storability as well as protection against aggressive media and environmental influences. Applications in forage harvesters, biogas plants or under salt water atmosphere in marine applications confirmed the excellent resistance under these demanding environmental conditions.
SGFlex flanges and discs are connected by a simple bolted joint. Only high-quality bolts (grade 10.9) and washers (300 HV) are used for this purpose. The direct bolting into the flange allows very simple assembly.
This design allows the SGF discs to be radially disassembled and reassembled simply by loosening the screws. It is not necessary to dismantle or move the flanges.
Please click on one of the variants to enlarge it.
Shrink Disc
Clamping Set
Spline Connection
Huge Shafts
Key Connection
Performance Data in the Standard Range
The Series
The flexible discs assembly SGFlex-3F Series is an assembly consisting of a SGFlex flexible disc, a drive flange and a driven/output flange.
The series includes three types of couplings. Each is available in six sizes: 75, 96, 120, 140, 180 and 220mm. The nominal torque range is between 200Nm and 3,200Nm, depending on the size.
SGFlex-3FD
For shaft-shaft connections
The SGFlex-3FD is designed to connect power units with shaft connection, for example an electric motor with a hydraulic pump. The SGFlex-3FD is available with pilot bore flanges and flanges for taper-lock bushings.The flanges with pilot bore can be machined to fit almost any shaft design.
The coupling is easy to install, both fully assembled and step-by-step in individual parts. For maintenance, the flex coupling can be replaced without moving the power units or the flanges.
The SGFlex-3FD coupling is reliable in operation and easy to handle.
SGFlex-3FB
For single-sided shaft connections with spacer bushings
The SGFlex-3FB has been designed similarly to the SGFlex-3FS to connect an existing interface with a shaft connection, such as a pulley to an electric motor. Thanks to the included spacer bushings, the existing component for coupling the flexible disk requires only minor adjustments, reducing the need for additional parts and saving costs.
The SGFlex-3FB flexible disk coupling makes connecting compatible components with shafts even easier!
SGFlex-3FS
For single-sided shaft connections
The SGFlex-3FS is designed to connect an existing connection to a shaft connection, for example a pulley to an electric motor. The existing component has to be slightly adapted for the connection of the flex coupling, but this allows saving of additional components and thus costs.
The SGFlex-3FS is available with flanges for taper-lock bushings as well as pilot bore flanges, which can be machined as required.
The SGFlex-3FS coupling is an intelligent solution for applications with suitable components for connecting the flex coupling and combines this with the advantages of the SGFlex-3FD.
SGFlex-3FF
For flywheel-shaft connections
The SGFlex-3FF is designed to connect engine flywheels to shaft connections, for example to a gearbox or generator. The flanges for the connection to the flywheel are standardized according to SAE J620. The flanges for the shaft connection can be adapted as required.
The SGFlex-3FF coupling combines the advantages of ready-made flanges for the flywheel connection with high flexibility for the shaft connection.
Assambly?
In no time at all.
The SGFlex-3F-ALIGN centering system makes it very easy to replace the flexible discs including the two centering flanges. You do not have to move any machine parts.
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More InformationWhat are the advantages of the SGFlex-3F-Series?
The SGF tractive force principle ensures that power is transmitted almost exclusively by the vulcanized cord inlays as tractive force.
The cord inlays (Tenpu® fiber technology) simultaneously provide damping of torque peaks and absorption of start-up shocks. The elastomer takes on a supporting and protective function for the cord inlays and serves to isolate noise by interrupting the structure-borne sound path.
Maintenance-free
No need to lubricate
High power density
High power density due to power transmission through Tenpu® fiber technology
Insensitive
Insensitive to shock loads
FAQ Flexible Couplings
What are flexible couplings and how do they work?
The SGFlex‑3F series is a torsionally flexible coupling that connects two shafts via a thread-reinforced elastomer element (SGFlex coupling), thus compensating for vibration, torsional shock load and misalignment.
For which applications is it ideal?
How does the vibration damping of the SGFlex‑3F‑series work?
What materials are used in the SGFlex‑3F‑series?
The internal thread packages are made from various materials such as nylon or polyester, can be tailored to the respective application and ensure reliable power transmission.
Both the inner bushings contained in the joint disc and the metal flanges of the coupling are made of high-quality steel.
How easy is the SGFlex‑3F‑series to maintain and install?
You can find out more about installation here.
What are the advantages compared to claw couplings?
Due to their design, they often show some play at zero crossing and the elastic element can often only be replaced with bigger efforts (e.g. by moving machine components). SGFlex-3F couplings are backlash-free and the elastic element, can be replaced with minimal effort. In order to replace it, only the 6 screw connections need to be loosened; it is not necessary to move any system components. The internal thread packages significantly reinforce the elastomer in SGFlex-3F couplings, enabling these couplings to withstand higher loads and offering a longer service life compared to conventional claw couplings.
Why is the SGFlex-3F series superior compared to conventional elastomer couplings?
Thanks to the combination of high-quality elastomer and internal thread packages, couplings in the SGFlex-3F series are significantly more resilient and durable.
Since the internal thread packages and the elastomer form a single unit together with the screw connection bushings, no dirt can get into the system. This makes the SGFlex-3F series the ideal coupling for demanding environments.
What advantages does it offer over compared to bolt couplings?
SGFlex-3F couplings are very small and lightweight. The elastic element (the SGFlex coupling) can be replaced quickly and easily using standard tools. This saves time during installation and maintenance.
How does the SGFlex-3F series contribute to energy efficiency?
What size and configuration options are available?
Is the SGFlex-3F series suitable for extreme conditions?
What economic advantages does the SGFlex‑3F‑series offer?
In use e.g. for these Industries
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