The Influence of the Bearing Lifetime on the Performance of Universal Gear Drives with High Gear Ratio Values

• Published in: MATEC Web of Conferences Vol. 287; p. 1022
• Main Authors: Rackov, Milan, Kuzmanović, Siniša, Knežević, Ivan, Čavić, Maja, Penčić, Marko, Stefanović, Darko, Starzhinsky, Victor E., Shil’ko, Sergey V., Algin, Vladimir B.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 2019
• Subjects: Bearings; Dependence; Gear ratios; Torque
• ISSN: 2261-236X; 2274-7214; 2261-236X
• DOI: 10.1051/matecconf/201928701022

The problem of defining the load (nominal torque on the output shaft - T2N) of universal gear drives depending on the size of the gear ratio is analysed in this paper. It is logical that the load capacity of gear drive depends on the weakest gear component. Since the gears are the most expensive components of gear unit, it tends to maximize their performance. However, for low gear ratio, i.e. for high speeds, the bearings often limit their load capacity since the same bearings are used in all transmission ratios because it is not practiced to oversize the bearings at low speeds. Nowadays, when high values of gear ratio are used, it is interesting to consider the dependence of the nominal torque at the output regarding to gear ratio and operating life of the unit.