LAUSR

Abstract A new model for cylindrical roller bearings, capable of deterministically handling lubrication and misalignment situations, is developed by coupling a quasi-static model and a finite line-contact EHL solver. Numerical results of internal load, pressure, and film thickness between rollers and raceways as well as bearing stiffness are obtained with different configurations of diametrical clearances, speeds, lubricant viscosity, misalignment angles, and the roller-profile modifications. It is revealed that if the roller bearings operate under zero or negative clearances, the loaded zone expands and additional loads can be produced by lubrication due to geometric constraints to the rollers, especially under light load and high speed conditions. The logarithmic profile of the rollers tolerates the misalignment better than the dub-off or crown profile.