Talk:Bearing (mechanical)

message: I've removed a number of commercial external links, see here, and discuss if anyone feels that some should be re-added.  If there are a few really notable manufacturers, it would be okay to link to just those, but it would be far better to use internal links for them, to discourage further non-notable manufacturers from adding themselves.  --Interiot 06:25, 1 March 2006 (UTC)
thread_title:  Commercial external links removed 

message: "A bearing is a component used to reduce friction in a machine."
Come again? Really?? No. Oil reduces friction in a machine, so it's a bearing?
A bearing is a joint union between two items, one being the load & the other being the support, the point of contact being "the bearing". this can be between solid constructions "as in buildings" or between moving objects as in machines. The medium used between the moving parts to allow movement might be more accurately described as the race, sleeve or shell depending on the medium used. This medium is purely a friction reducer at the point of contact between the moving objects. The description below defines it further.  —Preceding unsigned comment added by 86.146.0.153 (talk) 08:44, 26 April 2008 (UTC)
thread_title:  Definition of bearing 

message: This article really could use some illustrations - there are very good ones at :Commons:Category:Bearings, but I'm not knowledgeable enough to assign them. There are also good photographs used in the German version of this article. Sandstein 05:42, 18 August 2006 (UTC)
replies: text: Wow, those commons images are great!  I've added several to rolling-element bearing.  This is a more general article though, so it should probably have two or three images, of very different kinds of bearings.  (eg. maybe one rolling, one flexure, and one plain bearing?).  --Interiot 08:15, 18 August 2006 (UTC)
thread_title:  Illustrations 

message: I know there are many many types of bearings, especially if you include different mountings, but a list would be educational of non-experts. (E.g" cutlass bearing, pillow block, etc...)24.225.51.32 17:19, 10 October 2007 (UTC)
thread_title:  Types of bearings 

message: I don't have time to follow up right now, but the blanket reversion of my recent edits won't stand vis-a-vis the edit summary given with it. Tweaking is welcome, but blanket reversion won't do here. Too many omissions were validly addressed by the additions. Will be back soon to revisit. — ¾-10 03:07, 14 April 2009 (UTC)
replies: text: OK, after reading the articles on flexure bearings and living hinges, I understand better why my edits of last night cannot stand as written. Thanks for pointing me to those. Nevertheless, some of the info that my edits conveyed must still be duly incorporated into this article, although in modified form. For example, in 19th- and 20th-century scraping practice, it was common to speak of "scraping to a bearing," by which they meant scraping to approach the final geometry and surface finish of an accurate, smooth plane or cylindrical surface. Such accurate surfaces would then serve as bearing surfaces such as ways and spindle bearings. So we need to broach in this article the very idea of a bearing surface as simply a careful preparation of the substrate's geometry and surface finish. This is "square one" from which bushings and linear bearings build in complexity. When I have "free time," or a synthetic approximation thereof, I'll work on incorporating this info in a way that also keeps in mind the broadest sense of the word "bearing" including flexure bearings and living hinges. Thanks, — ¾-10 00:11, 15 April 2009 (UTC)
replies: text: Update: Haven't had time to come back to this, but I will note here for future development that when you consider flexure bearings, the simplest journal bearings, and scraping ways to a bearing, you must define the broadest sense of the word "bearing" not as "a device to allow constrained relative motion between two or more parts", but as "an interface to allow constrained relative motion between two or more parts". The "device" sense is the next step down in breadth (but still fairly general) and is the sense most frequently used. Will work on a revision sometime if the spirit moves me. Regards — ¾-10 22:50, 5 June 2009 (UTC)
replies: text: Given that an interface is an infinitely thin surface I kinda doubt that that's what a bearing is. Got a reference?- (User) Wolfkeeper (Talk) 23:41, 5 June 2009 (UTC)
replies: text: I'm referring to the broadest sense of the noun interface (ie, the way that two objects [or two components of the same object] interact); whereas you're referring to a step down in breadth (ie, one of the subsets of that superset). There is a logical connection that links those two senses, but I don't yet know if the world of existing secondary sources contains any good instances of someone having written a clear exposition of that connection. Such instances are what I would need to find as refs. I may not get the time to pursue this. If anyone else out there who's reading this does, feel free to follow up. Regards — ¾-10 16:50, 6 June 2009 (UTC)
replies: text: Here's a site with photos of an integral cast iron bearing. Also talked about in this book. — ¾-10 03:16, 24 November 2009 (UTC)
replies: text: For the record here, a link to this discussion,  related to the same superset topic (the various senses of the words), from when "Bushing (isolator)" was called "Bushing" and was conflated and merged with "Plain bearing" (ie, the Venn relationship of the overlapping senses was not represented correctly by the former page naming logic). When I get a chance I will move the "to bear/bearing/to be borne" info here and fill in the references. — ¾-10 02:34, 11 December 2009 (UTC)
replies: text: Looking forward to it...the definition needs to be fleshed out more for sure. Wizard191 (talk) 17:53, 12 December 2009 (UTC)
thread_title: Definition redux

message: As it is obvious that rollers and wheels are related technologies a statement to this effect now introduces the history section.
There is no evidence that the ancient egyptains used rollers or that they invented them. The former is entirely archeological speculation, the later certainly not true (see invention of the wheel). Actual egyptian art depicts sleds on lubricated runners without rollers. The references for the current statement do not link to a viewable document, one links to an engineering association, the other to a website selling copies of their proceedings.
I suggest that Egyptain use of rollers is more accurately described as speculation hence my previous text alteration as follows:
"Though it is often claimed that the Egyptians used roller bearings in the form of tree trunks under sleds[2] they are depicted in their own drawings as moving massive stone blocks on sledges with the runners lubricated with a liquid which would constitute a plain bearing. This may have been because there were few trees in Egypt adequate for this task and that under the weight of the larger stones any logs small enough to be man-handled into position to form a continuous rolling surface would have quickly deteriorated."
Evidence, in the form of a real ancient illustration (not a modern "theory") can be found by Googling Djehutihotep. The illustration shows a massive statue on a sled but without rollers.  — Preceding unsigned comment added by Cymtriks (talk • contribs) 12:28, 15 April 2011 (UTC)
replies: text: Please review Wikipedia:Verifiability; Wikipedia's policy for inclusion is verifiability not truth. Moreover, you are pushing lots of original research, so unless you have solid secondary references to cite, its just speculation. Wizard191 (talk) 13:18, 15 April 2011 (UTC)
thread_title:  history 

message: Friction roller search. New article section or new friction rollers wiki page? HonestIntelligence (talk) 09:24, 6 June 2012 (UTC)
replies: text: A new section in roller conveyor.  Their function is for materials handling, not about bearing design. Andy Dingley (talk) 10:41, 6 June 2012 (UTC)
thread_title:  Friction Rollers 

message: Hello fellow Wikipedians,
I have just modified  on Bearing (mechanical). Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20160104230339/http://www.timken.com:80/en-us/knowledge/glossary/pages/BearingTermsGlossary.aspx to http://www.timken.com/en-us/knowledge/glossary/pages/BearingTermsGlossary.aspx
*Added archive https://web.archive.org/web/20100409062101/http://www.reliableplant.com:80/Read/260/bearing-failure-detection to http://www.reliableplant.com/Read/260/bearing-failure-detection
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at ).
Cheers.—InternetArchiveBot (Report bug) 10:16, 29 October 2016 (UTC)
thread_title:  External links modified 

message: Hello fellow Wikipedians,
I have just modified 3 external links on Bearing (mechanical). Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20130511155609/http://www.intechbearing.com/5200Series-DoubleRowAngularContactBallBearings-SealsandShields-Shop.html to http://www.intechbearing.com/5200Series-DoubleRowAngularContactBallBearings-SealsandShields-Shop.html
*Corrected formatting/usage for http://www.timken.com/en-us/knowledge/glossary/pages/BearingTermsGlossary.aspx
*Corrected formatting/usage for http://www.reliableplant.com/Read/260/bearing-failure-detection
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
Cheers.—InternetArchiveBot (Report bug) 17:09, 16 July 2017 (UTC)
thread_title:  External links modified 

message: Imagine that you had an eigth-grade textbook on bearings and in the middle of it you inserted a paragraph out of a someone's PhD dissertation about bearings.  That's the situation with the "Rolling-element bearing outer race fault detection" section.  It's not that it's wrong, but that it's just at a completely different level than the rest of the article.  That same amount of space could be much better used to cover a more general topic about bearings.  Someone who is an expert in this material should remove that section and add some more general material.  — Preceding unsigned comment added by 96.37.224.164 (talk) 07:00, 18 September 2017 (UTC)
thread_title:  The "Rolling-element bearing outer race fault detection" section does not belong with this article 

message: The following Wikimedia Commons files used on this page or its Wikidata item have been nominated for deletion:
* 
* 
Participate in the deletion discussion at the nomination page. —Community Tech bot (talk) 08:38, 22 July 2020 (UTC)
thread_title:  Commons files used on this page or its Wikidata item have been nominated for deletion