Bearing World Journal
![]() Herunterladen |
09.11.2022
Harald Rosemann: The Weibull Distribution and the Problem of Guaranteed Minimum Lifetimes
For service life tests, a shifted Weibull distribution, also known as the translated or three-parameter 2022 |
![]() Herunterladen |
09.11.2022
Sébastien Blachère, Experimental Conformity Level for comparison between endurance tests and life ca
Rolling bearing fatigue life is a stochastic process generally represented by a Weibull-like statistical distribution. 2022 |
![]() Herunterladen |
09.11.2022
Sébastien Blachère: Extrapolating Rolling Bearing Life Data to Very High Reliabilities: Friend or Fo
Bearing life is assumed to encounter randomness driven by a Weibull-like statistical distribution. Typical reliability |
![]() Herunterladen |
09.11.2022
Luc Houpert: Exact calculation of the cumulative failure rate; Study of the four parameter Rosemann’
It is therefore concluded that although powerful and very flexible, Rosemann’s model is not easy to use in practical 2022 |
![]() Herunterladen |
09.11.2022
Luc Houpert: A new four parameter reliability model applied to a first-in-N testing strategy using a
Abstract 2022 |
![]() Herunterladen |
30.04.2021
F. Morosi: Microinclusions Impact on Steel Balls Fatigue LifeRolling contact fatigue is the main cause of failure in bearings. Among other factors, damage phenomena are related to material properties and manufacturing processes. The damage evolution might be affected by microinclusions present in the material. This influence is related to composition, dimension, shape and location of microinclusions. The relation between microinclusions and fatigue life is investigated for balls undergoing Hertzian pressure fatigue for 100Cr6 steel. Failures are analysed 2020 |
![]() Herunterladen |
30.04.2021
H.-M. Eckel: Measuring the Kinematic Behavior of the Rolling Elements in a Spindle Bearing
Measuring the Kinematic Behavior of the Rolling Elements in a Spindle Bearing under Axial and Radial Loads 2020 |
![]() Herunterladen |
30.04.2021
T. Schröder: Full-Size Test Bench Measurements and Validation of a Novel Conical Sliding Bearing ...
After a description of the test bench used for this investigation, the independently measured creep behavior of two bearing rings of a planetary bearing arrangement under varying gear load distributions is presented. For the investigated planetary gear, both rings only show so called gear creep at high loads for all gear load distributions applied. 2020 |
![]() Herunterladen |
30.04.2021
S. Graf: Surface Mutation of the Bearing Raceway During Electrical Current Passage ...
Test results are presented which document the surface mutation of a bearing raceway of an axial bearing during passage of electrical current and operation in the mixed friction area. For the investigation of this matter, a combined mechanical and electrical load is applied to axial bearings of type 51208. For these experiments, the axial 2020 |
![]() Herunterladen |
30.04.2021
M. Wolf: Dynamic Simulation of Full Complement Cylindrical Roller Bearings with a Semi-Analytical ..In this paper, it is critically investigated how significant the runtime and stability advantages of the new contact detection algorithm are in context of an entire multibody simulation in comparison with full numerical models. 2020 |
![]() Herunterladen |
30.04.2021
M. Oehler: Bearing Selection for high Efficiency Worm Gear DrivesIn this work, comparative studies are shown in which different bearing setups are applied to a worm gear drive. Example setups are tapered roller bearings or angular contact ball bearings in adjusted bearing arrangement as well as a locating/non-locating bearing arrangement using four-point contact bearing as locating bearing. A tribological simulation software is used to calculate the load on the worm shaft bearings in axial and radial direction depending on the load situation of the gearbox .. 2020 |
![]() Herunterladen |
30.04.2021
L. Friedrich: The Utilization of Production-Related Defects for Improving Operating Properties ...
The influence of the orientation of form deviation of hydrodynamic journal bearings were simulated on the basis of the Reynolds equation and evaluated by a worst-case and best-case investigation. 2020 |
![]() Herunterladen |
30.04.2021
J. Gegner: Finite Element Analysis of Two-step Deep Rolling of Bearing Steel for Expansion ...In the present paper, two-step deep rolling with differently sized and loaded tools is introduced as corrective measure against the weak surface layer. For assessing the influence of process parameters, a finite element analysis is performed on ANSYS 19.2 software. A twodimensional model of the rolling elements pressed onto a raceway is used for residual stress simulation and engineering. 2020 |
![]() Herunterladen |
30.04.2021
I. Khader:The Influence of Mechanical Stresses on the Diffusion and Accumulation of Hydrogen ...
In this work, a finite element simulation model of a cylindrical roller thrust bearing (CRTB) was created. The simulations enabled studying the diffusion of hydrogen and obtaining qualitative information pertaining to stressassisted diffusion in tribological loading under the influence of residual stresses. The simulations revealed rather 2020 |
![]() Herunterladen |
30.04.2021
G. Breslau: A Fatigue Life Model for Roller Bearings in Oscillatory ApplicationsThis article presents a unified calculation approach for oscillating roller bearings based on the theory of LUNDBERG and PALMGREN, which is compared to the methods of RUMBARGER / JONES and HOUPERT. The relations derived in this work are based on the formulas for calculating the basic dynamic load rating according to the standard. For oscillating motion smaller than the critical amplitude, a more practical calculation method is presented, compared to RUMBARGER / JONES. 2020 |
![]() Herunterladen |
30.04.2021
F. Schlüter: Influence of Off-Centered Gear Load Distribution on Planetary Bearing Outer Ring CreepIn the contribution the design and calculation process of such conical sliding bearing and corresponding validation measurements of a full-scale demonstrator test in the application of a wind turbine main bearing will be shown. In order to investigate the new bearing concept under real conditions, an extensive measuring campaign has been carried out on a full-scale 1 MW system test bench. Among other matters the load-bearing properties and the overall bearing performance have been investigated. 2020 |
![]() Herunterladen |
30.04.2021
E. Broitman: Microstructural Analysis of Bearing Steels by a Statistical Nanoindentation Technique
The microstructure of ASTM 52100, X30CrMoN15-1, and AISI M62 steel samples, analyzed by optical 2020 |
![]() Herunterladen |
30.04.2021
E. Burbaum: Enhancement of the Insulation Properties of Thermally Sprayed Ceramic Bearing CoatingsThermally sprayed ceramic coatings partly include desired inhomogeneities like pores, which can be filled by sealers. Common bearings for drive trains in rail vehicles with electrical engines are coated with ceramics by thermal spraying for electrical insulation. The lifetime of these bearings can be reduced by the electrical characteristics of modulated frequency converters in electrical engines. High frequencies and a strong increase of the voltage may lead to a premature breakdown ... 2020 |
![]() Herunterladen |
30.04.2021
O. Leimann: Calculation Method to Evaluate the Risk of WEC Occurrence in Industrial Applications
White Etching Crack WEC is a premature subsurface initiated failure mode. WEC can occur on bearing components in industrial applications and is reported in wind turbine gear boxes, automotive and other applications. 2020 |
![]() Herunterladen |
30.04.2021
C. Eberhardt: Simulation Based Design of an Intelligent Hybrid Plain Bearing for Forming MachinesIn this paper, a simulation method to design an intelligent hybrid plain bearing (IHPB) and its hydraulics actuators is presented. A substitute model of the bearing composed of lookup tables is derived and integrated in a multiphysics model. An eccentricity control strategy is then developed and tested with a load profile from a deep drawing process. The results show a great potential for the performance of IHPB and its simulations. 2020 |
![]() Herunterladen |
24.02.2020
D. Bechev et al.: Method for the investigation of the EDM breakdown voltage of grease and oil
Method for the investigation of the EDM breakdown voltage of grease and oil on rolling bearings EDM, breakdown voltage, bearing currents |
![]() Herunterladen |
24.02.2020
G. Poll et al.: Starved Lubrication in Rolling Contacts-A ReviewStarvation is frequently encountered in rolling element bearings. The occurrence of starvation inhibits the generation of pressure and hence results in reduction in film thickness. On the other hand, starvation is helpful to suppress rolling friction and gross skidding of rolling bearings. ... starvation, rolling contacts, elastohydrodynamic lubrication, grease lubrication, replenishment |
![]() Herunterladen |
24.02.2020
M.Y. Sherif et al.: A new through-hardenable high hardenability bearing steel
A new through-hardenable high hardenability bearing steel designed by means of simultaneous optimisation of multiple responses using the desirability function approach Alloy design, desirability function, bearing steel, large size bearings |
![]() Herunterladen |
24.02.2020
L. Houpert: Novel analytical and numerical calculations in truncated point contactNovel relationships are given for calculating the contact load, tilting moment and pressure distribution along the roller as a function of the contact deformation and tilting angle for non-truncated or truncated point contacts described using single crown profiles. The analytical results have been calibrated versus some numerical results obtained using a cylinder on cylinder case and an advanced model and tool that account for pressure spikes. ... Hertzian point contact, truncated point contact, contact pressure, pressure spikes, 2019, Bearing, World, Journal |
![]() Herunterladen |
24.02.2020
W. Ma et als: Numerical solution and FFT-based prediction of the hydrodynamic pressure generation
Numerical solution and FFT-based prediction of the hydrodynamic pressure generation of parallel rough surfaces hydrodynamic lubrication, parallel surfaces, load carrying capacity, FFT techniques |
![]() Herunterladen |
24.02.2020
M. Stammler et al.: The influence of oscillation sequences on rolling bearing wearOscillating applications for rolling bearings include construction machinery like cranes and excavators and wind turbine pitch and yaw bearings. Due to the widespread use and the specific challenges of wind energy, oscillating applications have gained increased attention by the scientific community in the last years. In wind turbines, the amplitudes, their mean values and external loads of oscillations vary. ... wear, oscillation, rolling bearings, pitch bearings |
![]() Herunterladen |
24.02.2020
S. Rizzo et al.: Dimensional stability on Fatigue Performance of Wheel Bearing Rolling ElementsRolling bearings are critical automotive and mechanical components. For high loaded bearings, the steel rolling elements are subjected to failure having a direct impact on overall bearing fatigue life performance. Fatigue phenomena involve both rolling contact fatigue and material fatigue damage processes. ... Bearing, RCF, Rolling elements, Dimensional stability |
![]() Herunterladen |
24.02.2020
T. Klenk et al.: Conductive Simmerrings
Conductive Simmerrings help prevent electrical discharge machining in modern electrical powertrains EDM electrical discharge machining, conductive nonwovens, bearing damage, impedance spectroscopy, EMI electromagnetic interference |