Power loss of gearbox ball bearing under axial and radial loads

Journal Article · Sat Jan 01 04:00:00 EST 1994 · ASLE Transactions

DOI:https://doi.org/10.1080/10402009408983269· OSTI ID:101970

Nelias, D; Sainsot, P; Flamand, L ^[1]

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1. Inst. National des Sciences Appliquees de Lyon, Villeurbanne (France)

A new ball bearing behavior model which predicts and locates power losses in a high-speed gearbox angular contact ball bearing, operating under axial and radial loads, is presented. Its new features come from the consideration of both cage action and effect of lubricant film thickness in the computation of bearing kinematics at equilibrium. Lubricant rheological properties are used in order to calculate hydrodynamic and elastohydrodynamic forces in each lubricated contact of the mechanism. This model considers cage and ball kinematics to be unknowns. These are obtained by setting motion equations for each bearing element. The computation and the location of power losses are given by the friction forces and sliding speeds among the various bearing elements, i.e., contact between ball and inner or outer ring, ball-cage and cage-ring. The total power loss varies strongly with the rotational shaft speed and the oil flow through the bearing; nevertheless, it is hardly sensitive to axial and radial loads. Finally, a significant role of the cage in the power losses is established.

• Sponsoring Organization: USDOE
• OSTI ID: 101970
• Journal Information: ASLE Transactions, Journal Name: ASLE Transactions Journal Issue: 1 Vol. 37; ISSN ASLTA2; ISSN 0569-8197
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
BEARINGS
FRICTION
HYDROSTATICS
LUBRICANTS
MATHEMATICAL MODELS
TEMPERATURE DEPENDENCE