...Zhenjiang Zhou; Xincong Zhou; Konstantinos Gryllias; Hanhua Zhu; Xueshen Liu To investigate the impact of the length to diameter ratio (LDR) on the lubrication performance of misaligned journal stern bearings, a lubrication model was developed and solved using numerical methods, with experimental...

... of Oil Droplets Modeling of Aerodynamic Leidenfrost Effect of Oil Droplets air lubrication high-speed bearings lubricant levitation aerodynamic Leidenfrost effect (ALE) soft-EHL adhesion bearings tribological systems The Leidenfrost effect, originally described by Boerhaave...

... field. In this research work, initially, centrifugal experiments were conducted to estimate the antispreading behavior of the MFs, in the presence of an external magnetic field. Later, the starvation behavior of a thrust ball bearing was investigated after lubricating it with an MF, under different...

...Peng Xia; Jiabao Liu; Wenlong Song; Zhongqiang Huang; Hao Yang; Wensheng Ma; Yanling Guo Manufacturing errors impacted the gas porous bearing's performance, particularly the waviness on the rotor surface that repeatedly squeezed the gas film during rotation. This study investigated the effects...

...Dimitrios Skaltsas; Christos I. Papadopoulos Within the framework of stochastic surface roughness representation, a recently derived Reynolds-type equation has been employed by the authors to compute the average values of a bearing’s operational parameters. To enhance the understanding...

...Yongpeng Li; Mingyue Yu; Guanglei Meng; Yunbo Wang One-dimensional local binary pattern (1D-LBP) identifies the running state of bearings by describing local textural features of vibration signals. However, the 1D-LBP algorithm is rather sensitive to noise and intrinsic periodic features...

...Gang Wei; Guorong Wang; Lin Zhong; Yang Wang; Xia He; Mengyuan Li; Dan Zhu; Dangfei Wang; Wenling Liao Improving the wear resistance of cone bit bearings is crucial for enhancing bit life and drilling efficiency. This study integrates surface texture lubrication with bit floating sleeve bearings...

...Rai Singh Notay Over the past two decades, the phenomenon of electrical stray currents in bearings has garnered significant attention from researchers and industry professionals. With the widespread adoption of electric motors and generators in applications like electric vehicles and sustainable...

... the lubrication performance of the bearing. Therefore, this study takes the tiltable double rectangular oil pad hydrostatic thrust bearing as the research object and explores its dynamic characteristics. The study involves the analysis of oil film displacement response under eccentric loading conditions...

...Boyu Tian; Xiaofeng Zhang; Jin Xu; Fuan Zhu The article examines the dynamic characteristics of porous air bearings in the critical pneumatic hammer state (the transition state from the steady state to the pneumatic hammer state). The dynamic characteristics mainly include the critical load (film...

...MD Shujan Ali; Dongil Shin; Alan Palazzolo Supercritical CO 2 (SCO 2 ) power cycles offer significant advantages in terms of thermal efficiency, cost-effectiveness, and environmental benefits. However, the successful implementation of these cycles depends on the design and analysis of bearings...

...J. C. Atwal; P. Ganai Rigid bore aerodynamic journal bearings are widely used in precision machinery, high-speed small turbomachinery, etc., to support and guide the motion of shafts. Due to several starts/stops of the machinery, these bearings may wear out in the service, and subsequently...

...Vishal G. Salunkhe; S. M. Khot; Nitesh P. Yelve; T. Jagadeesha; R. G. Desavale Bearing clearance is a common issue in mechanical systems due to unavoidable assembly errors, leading to weak fault features that are challenging to detect. This study introduces a novel diagnostic technique...

...Rajesh Joshi; Gurmitsingh Bassan Tapered roller bearings with hollow rollers offer improved roller stiffness, enhanced speeds, and lower running temperatures due to better lubrication. Designing precise tapered roller bearings with hollow rollers is crucial. This study introduces a novel design...

...Mitul T. Solanki; Dipak P. Vakharia The fatigue life of rolling bearings is a critical factor in their selection and application, driving ongoing research aimed at enhancing their performance. Among the solutions explored, the introduction of hollow rollers has been noted for their lighter weight...

... motors generate complex shaft voltages and bearing currents, leading to bearing electrical erosion. This study proposes a new method for detecting high-frequency (HF) circulating current and electric discharge machining (EDM) current signals in bearings for electric motors. The proposed method utilizes...

...Yang Liu; Yangzhou She; Wenqi Li To analyze the working mechanism of the floating sleeve bearing of the cone bit, the life of the floating sleeve bearing was tested. The experimental results show that adhesive wear will form on the bearing surface with the increase in temperature, which is the main...

...Robert L. Jackson; Sudip Saha; Jack R. Janik Rolling element bearings are an integral component of electric vehicles, supporting radial and axial loads in powertrain components such as electric motor shafts and wheel bearings. Fast-switching inverters enable precise, variable control of motor...

...Ge Xu; Shuyun Jiang; Chibin Zhang; Xiaohui Lin The hydrodynamic herringbone groove journal bearing (HGJB) performs exceptionally well at high speeds but is limited by a low load-carrying capacity, largely due to the lubrication characteristics of water. To address this issue, a hybrid water...

...Collier Fais; Muhammad Ali; Isaiah Yasko This study presents the design and development of a new hydrodynamic thrust bearing test rig with a novel hydrodynamic pressure feedback bearing alignment control system. The bearing alignment system maintains an even distribution of thrust load across...