Untersuchungen zum Käfigrasseln bei Spindellagern*/Cage rattling analysis in spindle ball bearings

2016 ◽  
Vol 106 (01-02) ◽  
pp. 65-71
Author(s):  
E. Abele ◽  
L. Holland ◽  
J.-N. Burbach
Keyword(s):  
Behavior Analysis ◽  
Vibration Analysis ◽  
Ball Bearings ◽  
Negative Effects ◽  
Bearing Behavior

Instabile Käfigbewegungen wie das bekannte „Käfigrasseln“ können sich auf das Wälzlagerverhalten negativ auswirken. Die Analyse des Käfigrasselns ist daher essentiell, um das Phänomen besser verstehen und schließlich Maßnahmen ableiten zu können sowie instabile Bewegungszustände zu vermeiden. Dieser Beitrag stellt Schwingungsanalysen zur Untersuchung des Käfigrasselns vor.   Unstable cage movements, e.g. cage rattling, may have negative effects on bearing behavior. Analysis of cage rattling is essential to understand the phenomenon and to give recommendations for preventing unstable movements. This paper presents methods for vibration analysis in order to investigate cage rattling.

Nonlinear Vibration Analysis of an Elastic Rotor Supported on Angular Contact Ball Bearings Considering Six Degrees of Freedom and Waviness on Balls and Races

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
C. K. Babu ◽  
N. Tandon ◽  
R. K. Pandey
Keyword(s):  
Nonlinear Vibration ◽  
Elastic Deformation ◽  
Vibration Analysis ◽  
Degrees Of Freedom ◽  
Ball Bearings ◽  
Rigid Rotor ◽  
Six Degrees Of Freedom ◽  
Extension Work ◽  
Inner Race ◽  
Rotor Model

Nonlinear vibration analysis of an elastically deformable shaft supported on two lubricated angular contact ball bearings is reported herein considering six-degrees of freedom (6-DOF) and waviness on races and balls. This is an extension work of the investigation published by the authors Babu, C. K., Tandon, N., and Pandey, R. K., 2012, “Vibration Modeling of a Rigid Rotor Supported on the Lubricated Angular Contact Ball Bearings Considering Six Degree of Freedom and Waviness on Balls and Races,” ASME J. Vib. Acoust., 134, p. 011006. Elastic deformation of shaft, frictional moment, and waviness on races and balls have been incorporated in the model for the vibration investigations of rotor's CG. Two noded 3D Timoshenko beam element having 6-DOF has been employed in the computation of the shaft's deformation. Governing equations with appropriate boundary conditions have been solved using 4th order Runge–Kutta method. It is observed that vibration amplitude enhances considerably after incorporating the elastic deformation in comparison to the amplitude achieved using rigid rotor model approach. Moreover, the influence of outer race's radial waviness is large on the amplitudes of vibrations in comparison to radial waviness of inner race. However, it is worth noting here that in case of rigid rotor model the presence of radial waviness on inner race yields high amplitudes of vibrations.

Identification of Bearing Defects in Hybrid Thrust Ball Bearings by Vibration Analysis

2015 ◽  
Vol 825-826 ◽  
pp. 844-851 ◽  
Author(s):  
Arne Ziebell ◽  
Oskar Schöppl ◽  
Roland Haubner ◽  
Thomas Konegger
Keyword(s):  
Vibration Analysis ◽  
Relevant Information ◽  
Optimal Operation ◽  
Ball Bearings ◽  
Test Rig ◽  
Successful Operation ◽  
Bearing Defects ◽  
The Status ◽  
Key Aspects

Hybrid ball bearings, consisting of metallic washers in combination with ceramic bearing balls, feature a variety of significant advantages in comparison to standard steel bearings, including mechanical properties and reduced friction during operation. Key aspects for a successful operation are a prevention of defects of both balls and washers, as well as the knowledge of critical and optimal operation parameters. This relevant information can be obtained through test rig trials, where vibration analysis has found to be a versatile and efficient tool for the characterization of the operational status. In this contribution, hybrid thrust ball bearings with Si3N4 balls are investigated. After an introduction of defined damages in different parts of the bearing, test rig trials were conducted, and the vibration behavior during operation was compared to new, unused bearings. The characteristic vibrational frequencies, obtained through a variety of software-based filter and analysis algorithms, were correlated with materialographic investigations of failed bearings. The proposed method was shown to yield valuable information about damage morphologies and, subsequently, about the status of the bearing during operation.

Study of ball bearing fatigue damage using vibration analysis: application to thrust ball bearings

2015 ◽  
Vol 53 (2) ◽  
pp. 325-336 ◽  
Author(s):  
Toumi M. Yessine ◽  
Bolaers Fabrice ◽  
Bogard Fabien ◽  
Murer Sebastien
Keyword(s):  
Fatigue Damage ◽  
Vibration Analysis ◽  
Ball Bearing ◽  
Ball Bearings ◽  
Analysis Application

Estimation of the Surface Roughness on the Race or Balls of Ball Bearings by Vibration Analysis

1987 ◽  
Vol 109 (1) ◽  
pp. 60-68 ◽  
Author(s):  
H. Kanai ◽  
M. Abe ◽  
K. Kido
Keyword(s):  
Surface Roughness ◽  
Vibration Analysis ◽  
Diagnostic Method ◽  
Ball Bearing ◽  
Vibration Signal ◽  
Short Length ◽  
New Method ◽  
Ball Bearings ◽  
Accuracy Rate ◽  
Percent Accuracy

This paper describes a vibration-based diagnostic method by estimating the surface roughness on the rotating ring or balls in ball bearings. The surface roughness has been measured by a stylus that directly traverses the surface of the ring or balls obtained by taking apart the ball bearing. We developed a new method to estimate accurately the surface roughness by analyzing the short-length vibration signal that is excited when balls encounter flaws on the rotating ring or when races encounter flaws on the balls in a ball bearing. Our experimental results confirm that the roughness estimated by the proposed method agrees with that measured directly by using a stylus even in the case of crack μm wide. We applied this new method to the diagnosis of surface roughness in small-sized ball bearings and inferior samples were detected with a 95.3 percent accuracy rate.

High Precision Contact Model for Ball Bearings With Waviness

2021 ◽  
Author(s):  
Camille Jeannot ◽  
E. Sadoulet-Reboul ◽  
S. Dufrenoy
Keyword(s):  
High Precision ◽  
Predictive Models ◽  
Angular Position ◽  
Contact Model ◽  
Ball Bearings ◽  
Nonlinear Contact ◽  
Tangential Forces ◽  
Bearing Behavior ◽  
Global Parameters

Abstract Studying high precision ball bearings requires the development of predictive models. In presence of waviness on the rings, geometrical and also mechanical parameters will vary according to the angular position. To consider these modifications, a nonlinear contact model is proposed with normal and tangential forces calculation using Hertz and Dahl’s models. To solve the static equilibrium of the bearing, a highly modular energy method is developed. It allows the determination of both local and global parameters using the same equation. The 2D developed approach can be used to study different waviness orders and magnitudes to get a better understanding on how this affects the bearing behavior (contact load, balls gaping, pointing defects...). The presented results show that even small contact direction reorientation can create tangential forces. This modifies the bearing deflections and induces a residual moment. These phenomena can only be observed when the contact is accurately modeled.

Vibration Analysis and Its Application of a Linear Motion Guide Supported by Rolling Ball Bearings

2005 ◽  
Vol 29 (7) ◽  
pp. 955-963 ◽  
Author(s):  
Jae Seok Choi ◽  
Yong-sub Yi ◽  
Yoon Young Kim ◽  
Dong Jin Lee ◽  
Sung Jin Lee ◽  
...  
Keyword(s):  
Vibration Analysis ◽  
Ball Bearings ◽  
Linear Motion ◽  
Rolling Ball ◽  
Linear Motion Guide

scholarly journals Detection and discrimination of flaws in ball bearings by vibration analysis.

1986 ◽  
Vol 7 (2) ◽  
pp. 121-131 ◽  
Author(s):  
Hiroshi Kanai ◽  
Masato Abe ◽  
Ken'iti Kido
Keyword(s):  
Vibration Analysis ◽  
Ball Bearings

Application of Vibration Analysis in Ball Bearing Fault Detection

2005 ◽  
Author(s):  
F. Bakhtiary-Nejad ◽  
A. H. Nayeb ◽  
S. E. Yeganeh
Keyword(s):  
Fault Detection ◽  
Computer Program ◽  
Time Domain ◽  
Vibration Analysis ◽  
Ball Bearing ◽  
Detection Method ◽  
Ball Bearings ◽  
Test Results ◽  
Localized Defects ◽  
Set Up

In this paper, existence of localized defects in a ball bearing has been diagnosed using vibration analysis. First, different kinds of faults which occur in ball bearings have been investigated. Then an analytical model has been proposed for determining the damaged ball bearing vibrations due to a localized defect. Also various methods of fault detection have been evaluated. Next, in order to examine the ball bearings, a testing set-up has been designed and constructed. Then by preparing a computer program, which calculates defect frequencies, some ball bearings have been tested. The test results were originally derived in time-domain. Then by using vibration analysis of healthy and damaged ball bearings in frequency-domain, a fault detection method for ball bearings has been proposed.

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