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Geislinger Coupling Description

Application

Geislinger Couplings are torsional elastic, high damping steel spring couplings with the follwong advantages: High damping factor High elasticity Long life Low weight, small size No ageing effects on isolation or damping Low wear and maintenance Indifferent to high temperatures, dirt and oil Sound damping Suitable for high rotational speeds Due to the increased power density of today’s diesel and gas engines, more attention must be paid to torsional vibration issues. In many cases it is now necessary to dampen torsional vibrations and to move damaging natural frequencies out of the operating speed of the drive system. The Geislinger Coupling is capable of solving both of these tasks. The stiffness of the coupling leaf springs can be precisely tuned to isolate or move harmful natural frequencies. In addition the Geislinger Coupling provides a unique hydrodynamic damping, via oil displacement, which effectively absorbs torsional vibrations. These torsional vibrations create stresses in the driveline system, dramatically shortening component life and reliability. As a result, the Geislinger Coupling allows for continuous operation within the operating speed range of the drive system. Incorporation of Geislinger Couplings into a torsional system results in lower stresses for the engine’s crankshaft, all other driven shafts and gears. Geislinger Couplings not only meet the demands of any type and size of internal combustion engine, but also the demands of all sorts of other machinery. Applications such as pumps and compressors are typical examples. Data collection from many research test beds and running installations has enabled precise damping and spring stiffness (elasticity) requirements to be established. This guarantees correct calculation of the critical speeds, amplitudes and loads in all parts of the system. Damping and elasticity can be tailored within a wide range to meet the needs of any installation. Due to the fact that a Geislinger torsional elastic coupling has no axial stiffness, axial vibrations cannot be transmitted from the prime mover to any components connected after the coupling. Besides absorbing thermal expansion of the driving and driven shafts, the coupling also permits parallel and angular misalignments.
Geislinger GmbH, 5300 Hallwang, Austria Coupling Catalog: Version 17.1 2 / 118