Results 31 to 40 of about 228,051 (167)

Research on Key Technologies of Temperature Rise Suppression for Motor Grease Lubricated Rolling Bearing

机车电传动, 2020
At present, grease lubrication is widely used in motor rolling bearings. However, the bearing DN value increases rapidly with the increasing of motor speed and power for the factor that the lubricating grease is semi-solid with poor flow and heat ...
Baoying SHE, Sizhou GUO, Ronghai MEI, Haijiang LI, Jiawei CAO   +4 more
doaj  

Transient Simulation Analysis of Needle Roller Bearing in Oil Jet Lubrication and Planetary Gearbox Lubrication Conditions Based on Computational Fluid Dynamics

Lubricants
The transient lubrication conditions of rolling bearings are different in gearboxes and bearing testers. It has been observed that samples of qualified rolling bearings tested in rolling bearing testers often fail and do not meet lifespan requirements ...
Shushen Gao, Xiangying Hou, Chenfei Ma, Yankun Yang, Zhengminqing Li, Rui Yin, Rupeng Zhu   +6 more
doaj   +1 more source

Studies on the Influence of Residual Stresses on the Fatigue Life of Rolling Bearings in Dependence on the Production Processes

Frontiers in Mechanical Engineering, 2020
The production process significantly influences the surface properties of rolling element bearings raceways. Deep rolling can induce a depth dependent residual stress state.
Florian Pape, Timm Coors, Gerhard Poll
doaj   +1 more source

Research on the Remaining Life Prediction Method of Rolling Bearings Based on Optimized TPA-LSTM

Machines
The whole life cycle degradation data set of rolling bearings has the characteristics of large capacity, diversity, and non-stationarity. As a powerful tool for processing such time series data in deep learning algorithms, LSTM is prone to the loss of ...
Na Lei, Youfu Tang, Ao Li, Peichen Jiang
doaj   +1 more source

Fault Diagnosis of Rolling Bearing Based on a Novel Adaptive High-Order Local Projection Denoising Method

Complexity, 2018
Rolling bearings are vital components in rotary machinery, and their operating condition affects the entire mechanical systems. As one of the most important denoising methods for nonlinear systems, local projection (LP) denoising method can be used to ...
Rui Yuan, Yong Lv, Gangbing Song
doaj   +1 more source

Fault Diagnosis for Rolling Bearings Using Optimized Variational Mode Decomposition and Resonance Demodulation

Entropy, 2020
It is difficult to extract the fault signal features of locomotive rolling bearings and the accuracy of fault diagnosis is low. In this paper, a novel fault diagnosis method based on the optimized variational mode decomposition (VMD) and resonance ...
Chunguang Zhang, Yao Wang, Wu Deng
doaj   +1 more source

Development of acoustic emission technology for condition monitoring and diagnosis of rotating machines: bearings, pumps, gearboxes, engines, and rotating structures [PDF]

, 2006
Proof pdf available on ResearchGate (2nd May 2015 uploaded by David Mba)One of the earliest documented applications of Acoustic Emission Technology (AET) to rotating machinery monitoring was in the late 1960s.
Mba, David, Rao, Raj B. K. N.
core   +3 more sources

Multiscale Distribution Entropy and t-Distributed Stochastic Neighbor Embedding-Based Fault Diagnosis of Rolling Bearings

Entropy, 2018
As a nonlinear dynamic method for complexity measurement of time series, multiscale entropy (MSE) has been successfully applied to fault diagnosis of rolling bearings.
Deyu Tu, Jinde Zheng, Zhanwei Jiang, Haiyang Pan   +3 more
doaj   +1 more source

Lubrication life of cylindrical roller bearings for traction motors of railway vehicles (Effects of bearing temperature, vibration acceleration, and grease mass)

Nihon Kikai Gakkai ronbunshu
In general, the life of a rolling bearing is calculated as the total number of rotations until rolling fatigue occurs on the raceway. However, when rolling bearings are used under light loads and high rotational speeds, they are damaged not by rolling ...
Daisuke SUZUKI, Ken TAKAHASHI
doaj   +1 more source

Complexity Analysis of Time-Frequency Features for Vibration Signals of Rolling Bearings Based on Local Frequency

Shock and Vibration, 2019
The multisource impact signal of rolling bearings often represents nonlinear and nonstationary characteristics, and quantitative description of the complexity of the signal with traditional spectrum analysis methods is difficult to be obtained.
Youfu Tang, Feng Lin, Qian Zou
doaj   +1 more source