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Keywords: Bearings
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Journal Articles
Article Type: Research Papers
J. Tribol. May 2023, 145(5): 054301.
Paper No: TRIB-22-1309
Published Online: January 17, 2023
...Ken Takahashi; Takafumi Nagatomo The calculating method for fatigue life of rolling bearings is based on the theory of Lundberg and Palmgren. The rated life is determined from the ratio of the dynamic load rating of the bearing to the dynamic equivalent load. However, in actual applications...
Journal Articles
Accepted Manuscript
Article Type: Research Papers
J. Tribol.
Paper No: TRIB-21-1498
Published Online: January 5, 2023
...Shuai Yang; Jiang Xueqing; Shaolin Zhang; Hong Guo; Shaoqi Cen The conical bearing can withstand both journal and axial load because of the conical-shape fluid film, and an investigation concerning the thermodynamic lubrication and stability properties is proposed for a conical hydrostatic...
Journal Articles
Article Type: Research Papers
J. Tribol. March 2023, 145(3): 031201.
Paper No: TRIB-22-1200
Published Online: November 17, 2022
...Oliver Menck Fatigue life calculation in bearings is an issue that has been the focus of decades of research culminating in national and international standards that are easily applicable to a wide variety of applications. However, almost all research has focused on simple, repetitive operating...
Topics: Bearings, Stress
Journal Articles
Article Type: Research Papers
J. Tribol. February 2023, 145(2): 021205.
Paper No: TRIB-22-1050
Published Online: November 10, 2022
...Michael Dawoud; Stephan Beitler; Hubert Schwarze The set and roller slip of an NU215 cylindrical roller bearing with medium clearance (MC) and tight clearance (TC) classes have been tested and compared to those of extensive clearance (EC) presented in Parts I and II of this publication. A total...
Journal Articles
Article Type: Research Papers
J. Tribol. February 2023, 145(2): 021204.
Paper No: TRIB-22-1046
Published Online: November 10, 2022
...Michael Dawoud; Stephan Beitler; Hubert Schwarze The rolling element slip of an NU215 cylindrical roller bearing fitted with four cage types was studied under various operating conditions. In comparison, a specially designed full complement bearing with the same principal dimensions was also tested...
Journal Articles
Article Type: Research Papers
J. Tribol. February 2023, 145(2): 021203.
Paper No: TRIB-22-1063
Published Online: November 10, 2022
...Michael Dawoud; Stephan Beitler; Hubert Schwarze The slip behavior of four cage types was studied for an NU215 cylindrical roller bearing under radial forces lower than the minimum recommended by the manufacturer by performing force, speed, and oil flow ramp tests. In comparison, a specially...
Journal Articles
Article Type: Research Papers
J. Tribol. January 2023, 145(1): 011801.
Paper No: TRIB-22-1005
Published Online: October 7, 2022
...-darmstadt.de bearings fluid-film lubrication hydrodynamic lubrication hydrostatic lubrication journal bearings rotordynamic seals References [1] Childs , D. W. , 1983 , “ Finite-Length Solutions for Rotordynamic Coefficients of Turbulent Annular Seals ,” ASME J. Lubr...
Journal Articles
Article Type: Research Papers
J. Tribol. November 2022, 144(11): 112201.
Paper No: TRIB-22-1035
Published Online: June 23, 2022
...–thermal–load coupling model, a 30,205 tapered roller bearing with curved contact is examined by reading the real-time key point temperatures using thermocouple. Finally, the effectiveness of the presented model is verified through experiments and comparison. Figure 1 shows the arbitrary curvilinear...
Journal Articles
Article Type: Research Papers
J. Tribol. November 2022, 144(11): 111201.
Paper No: TRIB-21-1447
Published Online: June 20, 2022
...Jing Liu; Zidan Xu The heat generated during the bearing working process would greatly affect the working life and stability of bearing and mechanical transmission system. To analyze the heat generation of cylindrical roller bearings (CRBs), a theoretical calculation model of bearing friction...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2022, 144(10): 101203.
Paper No: TRIB-21-1356
Published Online: June 6, 2022
... the boundary condition for calculation of the raceway’s elastic deformation outside the Hertz contact zone. Since the ball screw only bears the axial load, the displacements of the screw and the nut under the axial load are along the axis of the screw. According to Saint–Venant principle, the elastic...
Journal Articles
Article Type: Technical Briefs
J. Tribol. October 2022, 144(10): 104501.
Paper No: TRIB-21-1461
Published Online: May 10, 2022
...Xun Huang; Ge Xu; Shuyun Jiang Journal bearing reaction is usually represented by a set of forces and moments concentrated at a single point. This single point support model cannot be utilized to describe the behavior of fairly long bearing. This technical brief proposes a multiple nodes model...
Journal Articles
Article Type: Research Papers
J. Tribol. October 2022, 144(10): 101502.
Paper No: TRIB-22-1017
Published Online: May 10, 2022
...Hiroyuki Ohta; Yusuke Ueki This article deals with the expressions of friction force of a four-point contact linear ball bearing with two rows under low-speed operation. First, the slip velocity on a contact area and the equilibrium of moments acting on a ball were theoretically examined...
Journal Articles
Article Type: Research Papers
J. Tribol. May 2022, 144(5): 051202.
Paper No: TRIB-21-1443
Published Online: February 8, 2022
...Xiao-Yi Wang; Hu-Tian Feng; Chang-Guang Zhou; Zeng-Tao Chen; Jing-Lun Xie Preload, which is widely applied in linear motion ball guide (LMBG) to eliminate clearance and increase stiffness, gradually decreases owing to wear, resulting in the degradation of the load-bearing capability and dynamic...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071801.
Paper No: TRIB-21-1263
Published Online: December 22, 2021
...Dongil Shin; Junho Suh; Alan B. Palazzolo This paper investigates the journal asymmetric temperature-induced thermal bow vibration of a rotor, as supported by a flexure pivot journal bearing (FPJB). Thermal bow-induced vibration, known as the Morton effect (ME), is caused by non-uniform viscous...
Journal Articles
Article Type: Research Papers
J. Tribol. July 2022, 144(7): 071601.
Paper No: TRIB-21-1160
Published Online: December 17, 2021
...Luc Houpert; Oliver Menck This article begins by describing standard bearing life models in continuous rotation before going on to explain how the bearing life can be calculated for roller and ball bearings in oscillatory applications. An oscillation factor a osc is introduced, which accounts...
Journal Articles
Article Type: Research Papers
J. Tribol. December 2021, 143(12): 121201.
Paper No: TRIB-21-1207
Published Online: September 15, 2021
... fatigue life equation was constructed from this investigation’s RCF simulations to evaluate the stochastic RCF performance, given grain diameter and contact pressure, of non-conformal contacts. References [1] 2020 , Precedence Research Report on Bearing Market—Global Market Size, Trends Analysis...
Journal Articles
Article Type: Research Papers
J. Tribol. May 2022, 144(5): 051603.
Paper No: TRIB-21-1177
Published Online: August 27, 2021
...A. Dindar; A. S. Chimanpure; A. Kahraman A tribo-dynamic model of ball bearings is proposed to predict their load-dependent (mechanical) power losses. The model combines (i) a transient, point contact mixed elastohydrodynamic lubrication (EHL) formulation to simulate the mechanics of the load...
Journal Articles
Article Type: Review Articles
J. Tribol. April 2022, 144(4): 040801.
Paper No: TRIB-21-1155
Published Online: August 3, 2021
...P. Samanta; H. Hirani The present work portrays the latest review of the progressive advances in passive magnetic bearing (PMB) technology. PMB is an old technology with many encouraging properties. However, there are a number of inherent issues with design, analysis, and performance...
Journal Articles
Article Type: Research Papers
J. Tribol. April 2022, 144(4): 041803.
Paper No: TRIB-21-1142
Published Online: July 16, 2021
...Shuyun Jiang; Pengfei Liu; Xiaohui Lin Water-lubricated hydrodynamic spiral groove bearing is a potential support way for high-speed rotary machine, but the frictional power loss of the bearing will increase with the rotatory speed. Surface texture processing should be an effective technical means...
Journal Articles
Article Type: Research Papers
J. Tribol. March 2022, 144(3): 031201.
Paper No: TRIB-21-1090
Published Online: June 10, 2021
...Vladimir Ivannikov; Mikhail Leontiev; Sergey Degtyarev; Valeriy Popov An approach for accurate life analysis of radial roller bearings in complex loading conditions is presented. It employs ISO 16281 and accounts not only for external radial loads applied to the inner ring but also for (i) internal...
Topics: Bearings, Rollers