Space Mechanics and Control Division (DMC), Brazilian Institute for Space Research (INPE), São José dos Campos 12227-010, Brazil
Copyright © 2009 Mário César Ricci. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Rolling-element bearings are simple machine elements of great
utility used both in simple commercial devices as in complex
engineering mechanisms. Because of being a very popular machine
element, there is a lot of literature on the subject. With regard
to the behavior of internal loading distribution, elastic
deformations at point or line contacts, and geometric parameters
under loading, although there are many works describing the
parameters variation models, few works show such variations in
practice, even under simple static loadings. In an attempt to
cover this gap some studies are being developed in parallel.
Particularly in this work, a new, iterative computational
procedure is introduced which calculates internal normal ball
loads in statically loaded single-row, angular-contact ball
bearings, subjected to a known thrust load which is applied to a
variable distance (lever arm or eccentricity) from the geometric
bearing center line. Numerical examples results for a 218
angular-contact ball bearing have been compared with those from
the literature. Fifty figures are presented showing geometrical
features and the following parameters variations as functions of
the thrust load and eccentricity: contact angle, contact ellipse
parameters, normal ball loads, distances between groove curvature
centers, normal and axial deflections, and loading zones.