SGF AUTOMOTIVE COUPLING SYSTEMS
SGF says that when it comes to automotive coupling systems, one size or design does not fit all
SGF says that unfortunately, it is a common and dangerous misconception by most Automotive parts retailers and mechanics that a flexible driveshaft coupling in a vehicle is just there to transmit engine power and handle some movement in the driveline.
This is far from the truth, it says, stating that just supplying or replacing a vehicle’s coupling based on this simple criterion can lead to serious vibration if not catastrophic and expensive failures.
As each vehicle Make and Model exerts different power and harmonic signatures due to the combination of its powertrain configuration, factors including the engine, transmission, axle, driveshaft, wheel base and vehicle weight etc will also effect the correct design and tuning of a flexible coupling in order to negate or eliminate NVH in each vehicle.
In addition, every coupling is subject to high stresses during torque transmission which can be constant or fluctuate between peak loads, shock loads and torque and RPM ranges.
In short, the correct specified coupling in each application also needs to:
a. Reliably transmit the peak torque and RPM range generated by the engine;
b. Compensate for axial, angular and radial misalignment in the drivetrain of the vehicle; and
c. Be specifically tuned to eliminate or reduce the Noise, Vibration, Resonance and other disturbing harmonic signatures generated by the vehicle’s powertrain.
Therefore, when selecting a flexible coupling, SGF recommends you remember each vehicle’s flexible coupling can be unique and one size or design does not fit all – in fact it says there are minute vehicle specific performance characteristics designed into each SGF coupling.
SGF is a German company specialising in torque transmission and anti-vibration solutions for the OE Automotive and Industrial market.
Unlike many copy couplings available in the market, SGF says it utilises its trademark Tenpu fibre technology: a combination of cord inlays vulcanised within select rubber compounds that operate in tension rather than pressure or shear load.
It says the Tenpu fibre reinforcement fibres transmit the majority of the torque whilst the design enables the tuning of the coupling for the specific reduction of each vehicle’s NVH characteristics, resulting in optimal damping and the elimination or reduction of noise and vibration, improved tolerance to shock loads and compensation of radial, axial and angular misalignments. Further, SGF states its couplings also have a high-power density ratio.
For more information from SGF, visit www.sgf.de