Geislinger Couplings are torsional elastic, high damping steel spring couplings with the The classic Geislinger Coupling is a torsionally elastic, high damping. Geislinger develops and produces torsional vibration dampers, torsional elastic, high-damping couplings, misalignment couplings, and torsional vibration. The Geislinger Coupling is a torsional elastic, high-damping steel spring coupling with hydrodynamic damping. High reliability, long intervals between overhauls.
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The Geislinger coupling is an all-metal voupling for rotating shafts. It is elastic in torsionallowing it to absorb torsional vibration. Unlike some other coupling types, it is not intended to compensate for high radial mis-alignment between shafts, but it can compensate axial misalignments better than elastomer couplings.
The coupling may have a small ability to compensate for varying alignment, but if this is needed it is generally done through using an additional coupling in tandem.
The coupling also runs at the same speed for input and output shafts, unlike a torque converter. The design was invented by Dr. Leonhard Geislinger in Geislinger couplings are constructed inside robust enclosed steel housings. An outer housing and a central hub or “inner star”  form the input and output drive members.
Geislinger Coupling | Coupling with Hydrodynamic Damping
Internally, the drive is transmitted through a number of radial leaf springs. These leaf springs are damped by a damping ring, the tips of the longest leaves engaging in splines in the inner star. Hydraulic damping is provided, as the leaf springs are immersed in oil.
Any movement of the spring plates must squeeze oil through the narrow gaps around them between couplung plates and the casing. As the springs have a high surface area, yet there is only a small gap between them and their housing, the damping factor can be high.
Damping can be adjusted completely independent from the coupling’s torsional stiffness. The oil used for damping is usually supplied by the engine lubrication system, through a drilling in the crankshaft. This oil filling also aids lubrication and encourages a long service life. The coupling is mostly used on the output of large diesel engines.
It isolates vibration between geeislinger, shafts and driven components. A major benefit can be to avoid resonance problems where systems have a critical speed that must be avoided.
Use of a damped coupling can shift this frequency to an unimportant speed, outside the engine operation speed range and damp resonance peak.
The Geislinger coupling’s ability to easily tailor its damping is valuable here to allow tuning for a particular frequency. The nearly linear torsional stiffness, makes it easy to calculate Torsional Vibrations. A related device is the Geislinger geislingeg.
For 60 years. Built to last.
The massive outer casing is connected to this through similar leaf spring packs, but is free to move torsionally, with damping. It is used as a harmonic damper to control vibrations in shafts. The steel springs are tuned to optimize the natural frequency of a system and engine oil is used to reduce torsional vibrations.
Geislinger uses specially developed software to select the specific damper parameters which best protect the engine crank- and camshaft, as well as intermediate and propeller shafts from damage due to critical vibratory loads. The Geislinger Damper provides constant stiffness and very high damping over the damper life, independent of engine room temperature.
From Wikipedia, the free encyclopedia. Retrieved from ” https: Rotating shaft couplings Torsional vibration.
Geislinger | Couplings