☆ 4.1 Article

Tapered Roller Bearing Rib-Roller End Interaction at Hydrodynamic Contact

JOURNAL OF FRICTION AND WEAR (2022)

Fatigue life analysis of the radial cylindrical roller bearings: roller end-flange construction effect

Ramazan Bayrak et al.

Summary: The fatigue life analysis of radial Cylindrical Roller Bearings (CRBs) considers the effects of roller end-flange construction. The study shows that the variation of the flange angle has a significant impact on the bearing life, with minimal changes after a certain flange angle. In the case of high misalignment angles, the predicted life decreases until a specific flange angle and then increases with increasing flange angle. The change in bearing life is mainly attributed to the change in roller tilt angle versus flange angle.

MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES (2023)

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Article Engineering, Mechanical

Critical Sliding in Rolling Bearings under Hydrodynamic Friction Conditions

I. M. Klebanov et al.

Summary: This study investigates the conditions for seizing during hydrodynamic contact between parts under rolling friction. A friction model based on the generalized Eyring equation and the phenomenon of oil film self-heating is used. The model is validated by comparing with experimental data. It is found that the bearing seizing hazard occurs in the thermal zone of friction curves. The concept of critical slide-roll ratio is introduced and its dependence on contact pressure and temperature is studied. The conditions of contact between the rollers and the inner ring have a greater impact on friction power loss than the conditions of contact between the rollers and the outer ring.

JOURNAL OF FRICTION AND WEAR (2022)

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Article Engineering, Mechanical

Geometrical Optimization of the EHL Roller Face/Rib Contact for Energy Efficiency in Tapered Roller Bearings

Sven Wirsching et al.

Summary: Through numerical optimization of macro geometric parameters, the friction behavior of the EHL roller face/rib contact of tapered roller bearings was studied, and predicted through experimental design and EHL contact simulation. The study found that the basic geometric pairing and radius primarily determined friction behavior, while eccentricity played a minor role. Additionally, there was a trade-off between high load carrying capacity and low frictional losses.

LUBRICANTS (2021)

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Article Engineering, Mechanical