Results 21 to 30 of about 228,051 (167)

Creep Phenomenon in Thrust Washers of Needle Roller Bearings

Tribology Online
In radial rolling bearings, a phenomenon called creep occurs in the outer ring (the stationary/fixed raceway) when the bearing is subjected to excessive load.
Hiromichi Takemura, Taketoshi Chifu, Tetsuya Okumura   +2 more
doaj   +1 more source

Investigation of the influence of the degree of contact of rolling surfaces on contact stresses in ball radial bearings

RUDN Journal of Engineering Research, 2022
The study is devoted to the determination of the coefficients of the degree of contact of rolling surfaces, considering the tolerance field of rolling bodies, as well as the influence of the coefficients of the degree of contact on the maximum contact ...
Yuriy V. Belousov, Valeriy V. Kirilovskiy, Fedor V. Rekach   +2 more
doaj   +1 more source

Research on the service life of bearings in the gearbox of rolling mill transmission system under non-steady lubrication state

Advances in Mechanical Engineering
A rolling bearing plays a key role in the gearbox of the cold rolling mill transmission system. As a result, the degradation and failure of bearings can lead to unplanned shutdowns of the entire rolling mill system.
Hai Xu, Qingqing Zhang
doaj   +1 more source

Experimental Assessment of Influence of the Ball Bearing Raceway Curvature Ratio on the Level of Vibration

Communications, 2020
Raceway curvature ratio is a very important parameter, because its values influence the performance characteristics of rolling-element bearings, their durability and the level of generated vibrations.
Pawel Zmarzly
doaj   +1 more source

A Review of Mesoscopic Damage and Its Discrete Performance in Local Functional Grooves of Cageless Ball Bearings

Lubricants
Cageless ball bearings, due to their larger number of rolling elements and stronger load-bearing capacity, are widely used in active magnetic bearing systems, serving as protective bearings.
Enwen Zhou, Yibo Wang, Jingwei Zhang, Yuan Zhang   +3 more
doaj   +1 more source

Chaotic prediction of vibration performance degradation trend of rolling element bearing based on Weibull distribution

Science Progress, 2020
Rolling element bearings are used in all rotating machinery, and the degradation performance of rolling element bearings directly affects the performance of the machine.
Li Cheng, Xintao Xia, Liang Ye
doaj   +1 more source

Fault Diagnosis of Rolling Bearing Using Multiscale Amplitude-Aware Permutation Entropy and Random Forest

Algorithms, 2019
A rolling bearing is an important connecting part between rotating machines. It is susceptible to mechanical stress and wear, which affect the running state of bearings.
Yinsheng Chen, Tinghao Zhang, Wenjie Zhao, Zhongming Luo, Kun Sun   +4 more
doaj   +1 more source

Rolling Bearing Fault Diagnosis Based on Multiscale Permutation Entropy and SOA-SVM

Machines, 2022
The service conditions of underground coal mine equipment are poor, and it is difficult to accurately extract the fault characteristics of rolling bearings.
Xi Zhang, Hongju Wang, Mingming Ren, Mengyun He, Lei Jin   +4 more
doaj   +1 more source

A Review of the Non-Linear Motion Behaviour of Ball Bearing and Methods for Its Multibody Dynamics Analysis

Lubricants
Active magnetic levitation bearings incorporate backup bearings that support the rotor during a breakdown, allowing it to maintain its circular movement despite the loss of magnetic force.
Jingwei Zhang, Enwen Zhou, Linting Guan, Xiaoyu Gai, Yuan Zhang   +4 more
doaj   +1 more source

Stiffness Model of Rolling Bearing Considering Clearance and Analysis of Its Time-varying Characteristic

Jixie chuandong, 2021
In order to research the influence of the time-varying stiffness of rolling bearings on the precision of spindle rotation of machine tools， a time-varying stiffness model of rolling bearings are established by considering the radial clearance.
Runlin Chen, Qin Han, Menghao Zhang, Yanchao Zhang, Longlong Li, Yahui Cui   +5 more
doaj