Dynamic stability analysis of cages in high-speed oil-lubricated angular contact ball bearings

Liu, Xiuhai; Deng, Sier; Teng, Hong‐Fei

doi:10.1007/s12209-011-1487-6

Cited by 36 publications

(17 citation statements)

References 15 publications

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“…The whirl trajectories of the cage mass center gradually vary from irregular to regular, and the whirl radii of the cage motions are enlarged with the increment of the rotating speeds and axial loads, as shown in Table 4. The observed results are similar to both measurements for a tapered roller bearing in Sakaguchi and Harada 16 and theoretical simulations for an angular contact ball bearing in Liu et al 19 On increasing the axial forces, the contact loads of between balls and rings will become more uniformdistributed, which help to decrease the difference for the traction force of the balls, and further diminish the speed fluctuation of balls. These results directly reduce the frequency of collision between the cage pocket and balls, and enhance the guiding function between the cage and guiding land.…”

Section: Space Motion Trajectories Of the Cage Mass Centersupporting

confidence: 85%

Experimental investigation of cage motions in an angular contact ball bearing

Wen

Ren

Zhang

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part J:

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The commonly known effects of both the rotating speeds and external loads on the bearing dynamics or life behaviors are mostly caused by its cage dynamics, because of the complicated contact and collision interactions between the cage and other parts such as the inner or outer rings and balls. In this paper, experimental investigation of dynamic motions of a cage is carried out under various rotating speeds and external loads in a ball bearing. On a bearing test rig, the cage motions in axial and radial directions are measured by use of eddy transducers installed inside the bearing house and the subpanel. Then the measured results are analyzed by fast Fourier transform and compared at different operating conditions including rotating speeds, axial and radial forces, or moments. The three-dimensional space motions of the cage are also constructed to illustrate its different modes. Results reveal that the cage motions are typically periodic in the three directions. The motion frequencies consist of the cage rotating frequency and its multi-frequency, the inner ring rotating frequency, and also some combination frequencies of the cage and inner ring. The obtained characteristic frequencies of the cage motion in axial are similar to that in radial, but different in the variety of amplitudes under the same operating conditions. The increment of rotating speeds and axial loads of the bearing gradually make the whirl trajectories of the cage mass center regular, and enlarge its whirl radii. Instead, the whirl trajectories change from well-defined patterns to complicated ones, and its whirl radii decrease on increasing the radial loads and moments of the bearing. All the obtained experimental results are useful references for dynamic design and life prediction of high-speed and low-load bearings commonly used in many machines.

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Section: Space Motion Trajectories Of the Cage Mass Centersupporting

confidence: 85%

Experimental investigation of cage motions in an angular contact ball bearing

Wen

Ren

Zhang

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Some theoretical investigations of cage motion affected by cage clearances have been carried out by scholars. Ghaisas [8] and Liu [9] discussed the effects of the ratio of pocket clearance to guiding clearance on the cage motion in a cylindrical roller bearing and ball bearing, respectively, and indicated that cage motion stability is strongly dependent on the roller-cage pocket clearance. Further, the cage motion are evaluated as a function of clearances both in the ball pockets and at the guiding lands by Gupta [5,10], with the well-known computer code ADORE (Advanced Dynamics Of Rolling Elements) and demonstrated that cage instability has a definite correlation to cage pocket and guiding land clearances.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Clearance Influences on Cage Motion and Wear in Ball Bearings

et al. 2021

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Clearances of cages in ball bearings, including pocket and guiding clearances, play a vital role in the stability and reliability of bearings. In this paper, experiments on the cage motion and wear were carried out to investigate the influence of clearances in ball bearings. Firstly, the cages with a series of pocket and guiding clearances were specially designed and tested for prescribed operating conditions on a bearing test rig in which the cage motions were measured, and corresponding wear was also observed. Then, the normalized trajectory, waveform, and spectra of cage motion were constructed and compared to illustrate the effects of clearances on the cage motion and then to establish the relationship between cage motion and wear. Results reveal that the cage motion and wear are both significantly affected by its clearances. The increment of cage guiding clearance makes the whirl trajectories of the cage regular and the motion frequency of cage motion significantly change. However, the increment of cage pocket clearance make the whirl trajectories change from well-defined patterns to complicated ones, and the frequency of cage motion apparently changes. Additionally, the bearing wear is closely related to the cage motion. If the inner ring frequency is of domination for the cage motion, the cage guiding surface will wear seriously. While cage motion is dominated by two times cage frequency in spectrum domain, the cage pocket will wear more seriously.

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“…12,14 It reduces the intermittent collisions thereby increasing cage stability, which is also enhanced with increasing race speeds. 5 For the plastic cage, the cage whirl reduced slightly with the increasing inner race speeds, particularly for higher axial loads. At constant inner race speed and with increasing axial load, the average cage whirl radius reduced slightly for all three cages, within the margin of error.…”

Section: Resultsmentioning

confidence: 94%

Experimental Investigation of Cage Dynamics and Ball-Cage Contact Forces in an Angular Contact Ball Bearing

Arya

Sadeghi

Conley

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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The objectives of this investigation were to experimentally examine the cage motion and ball-cage contact forces for an angular contact ball bearing (ACBB) operating under various load and speed combinations. In order to achieve the objectives, a Counter Rotating Angular Contact Ball Bearing Test Rig (CRACTR) was designed and developed such that both the races of an ACBB can be rotated simultaneously in opposite directions, providing valuable insights into the ball-cage interaction. Five proximity probes were used concurrently to measure the in-plane (radial) and out-of-plane (axial) motion for three commercially available cage designs. Two load cells were used to measure the contact forces between the balls and cage pocket. The experimental results demonstrate that high inner race speeds and high axial loads develop the smallest and most circular cage whirl motions. Additionally, cage radius, cage pocket clearance, cage pocket area and cage inertia were the prominent factors affecting the magnitude of cage whirl. Experimental results also indicate that contact forces between the ball and cage pocket increase linearly with the increased race speeds. Ball-cage contact force was shown to be different for the three cages and was primarily governed by the cage pocket area and the cage radius. Results from this investigation can be utilized to predict the correlation between the ball-cage contact forces and the race speeds, and identify the key parameters governing the stable cage motion during bearing operation.

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Dynamic stability analysis of cages in high-speed oil-lubricated angular contact ball bearings

Cited by 36 publications

References 15 publications

Experimental investigation of cage motions in an angular contact ball bearing

Experimental investigation of cage motions in an angular contact ball bearing

Experimental Investigation of Clearance Influences on Cage Motion and Wear in Ball Bearings

Experimental Investigation of Cage Dynamics and Ball-Cage Contact Forces in an Angular Contact Ball Bearing

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