Thrust cone bearings provide increased efficiency for helical gear units at moderate speed levels

Thrust cone bearings are an elegant option to handle the axial forces generated by the torque transmission in helical-toothed gear stages. They have proven as an efficient and reliable bearing concept for integrally geared compressors but are nearly unknown in other fields of gearbox engineering. Th...

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Veröffentlicht in:Forschung im Ingenieurwesen 2017-09, Vol.81 (2), p.135-143
Hauptverfasser: Heß, Marcel, Lohrengel, Armin
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description Thrust cone bearings are an elegant option to handle the axial forces generated by the torque transmission in helical-toothed gear stages. They have proven as an efficient and reliable bearing concept for integrally geared compressors but are nearly unknown in other fields of gearbox engineering. The presented investigations consider three aspects which appear relevant to extend the field of possible applications for thrust cones towards gearboxes constructed with roller bearings. Based on simulations and experiments design parameters were identified, which enable a significant reduction of the necessary velocity for full film lubrication. For a single stage test gearbox noticeable increases in efficiency were achieved by replacing tapered roller bearings with a combination of thrust cone and ball bearings, especially during partially loaded operation. The resistance to wear and the determination of limits for the bearable loads under mixed friction conditions for various thrust cone design configurations are investigated in a third test series. It appears that the few limit values known so far might be exceeded significantly for future applications.
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subjects Axial forces
Axial stress
Ball bearings
Bearings
Compressors
Design parameters
Helical gears
Load resistance
Lubrication
Parameter identification
Roller bearings
Thrust cone bearings
Thrust cones
Transmissions (machine elements)
title Thrust cone bearings provide increased efficiency for helical gear units at moderate speed levels
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