Talk:Ball bearing

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advantages of ball bearings over plain bearings


Contents

[edit] Inventor

The ball bearing was not invented by Sven Wingquist (research reveals it was invented by Da Vinci as it says later on the page), he was merely a pioneer. I will make the change. STufaro 21:33, 10 September 2006 (UTC)

Got a cite for that?
I've got info which says that Philip Vaughan patented the first ball bearings. I've also read/heard about Emperor (Nero?)'s ball bearings in his pleasure ship, which was sunken in Italy, and raised in the 1900s... but very little details on that.
~ender 2006-11-23 4:54:AM MST
Specifically, Sven Wingquist developed the self-aliging spherical ball bearing (non-standard terminology, translated on the spot). Earlier designs were cylindrical and less tolerant to misaligned axles. I don’t have a reference handy, though. -Ahruman 08:39, 29 November 2006 (UTC)

NO! —Preceding unsigned comment added by 138.38.249.125 (talk) 03:38, 29 February 2008 (UTC)

Sorry. First time using. Would like to say please add in how the reference code for ball bearings are read ie 6309, 6302 and so on. Also, the Da Vinci with no citation can be found on repeated on the Bearing(mechanical) page. Just type "bearings" to find it. Yeokaiwei —Preceding unsigned comment added by Yeokaiwei (talk • contribs) 12:13, 15 April 2008 (UTC)

[edit] colloquial use

The article should mention, that when most people mention "ball bearings" or "BBs" they actually mean the balls, and not a bearing at all. --BjKa 15:22, 29 November 2006 (UTC)

[edit] Zero Byte

This article does not look like a Zero-byte sized article to me. Is this a bug in the Wiki software or somthing? --soumসৌমোyasch 05:27, 22 February 2007 (UTC)

[edit] e-DENTITY

For those who work on it, this article features in the theatre play/work e-DENTITY that is currently being performed in Toronto. One of the characters uses it to produce a report for his boss that he's too busy playing RPG games to write for himself. Ben W Bell talk 21:37, 7 April 2007 (UTC)


[edit] Lack of pictures

I really can't form a mental picture of the different types of ball bearings discussed in the article. Could we please have some more illustrative images ? 87.194.10.183 20:04, 11 April 2007 (UTC)

There's an animated 3D-version of a ball bearing on an external link now. Does that help? Khashayar.farmanbar 15:53, 3 May 2007 (UTC)
Jlindbergh: Is it possible to re-insert the link to the 3D-animation? It was explanatory, specially the red lines. /andersp 83.251.54.215 11:23, 5 May 2007 (UTC)
andersp: Of course. Though I feel I want to lay low and be a little more careful adding links for now. But maybe someone else agrees and adds it. Jlindbergh 08:55, 7 May 2007 (UTC)

[edit] Removed fact

I removed the following fact. It's unsourced and smells of an urban legend/original research. It should stay here until it is sourced.

  • "It should also be noted that as the allied bombers destroyed the ball bearing factories, all of the small, metal balls became projectiles. Many of these projectiles were launched high into the air and caused damage to the Allied bombers. At least one bomber was known to have crashed due to the large amount of damage caused from the balls. Essentially, the entire ball bearing factory was like a huge Claymore mine![citation needed]"--Tabun1015 20:34, 13 June 2007 (UTC)

[edit] Magnetism and ball bearings?

Ball bearings www.magnetman.com have also been experimented by use a luancher to test to see if magnetics have an effect on the ball bearings. The answer to that is apparent. --64.20.134.228 01:04, 12 October 2007 (UTC)Chris K.--64.20.134.228 01:04, 12 October 2007 (UTC)


[edit] Caged

Caged bearings typically have fewer balls than a full complement, and thus have reduced load capacity. However, cages keep balls from scuffing directly against each other and so can reduce the drag of a loaded bearing. Caged roller bearings were invented by John Harrison in the mid 1700s as part of his work on chronographs.[1]

- this page is about ball bearings. this fact is about roller bearings and should be on that page. 75.153.120.169 (talk) 23:05, 16 November 2007 (UTC)jer

That's untrue. Roller bearings aren't the only bearings with cages as I work ball bearings with cages. --Wizard191 (talk) 13:20, 7 March 2008 (UTC)

[edit] Ball race?

I came here as a result of a redlink for the term 'ball race'. Now, to my thinking, "ball race" is a colloquial equivalent for "ball bearing" (in its 'bearing' sense, rather than the 'ball' sense!) Am I correct in that thinking?

Regardless, could some knowledgeable person explain (in the lead) what a 'race' is here? The word is used at various points in the article, although from just reading the introduction (where the word is first used) I could not determine what it means.

Thanks.

EdJogg (talk) 13:52, 27 February 2008 (UTC)

I added a redirect. I think they're synonymous in practice, but I have a sneaking suspicion that the ball race is technically the raceway that the balls run it if you're being very strictly accurate, but I'm not completely sure; close enough, they're both covered here in any case.- (User) WolfKeeper (Talk) 18:40, 27 February 2008 (UTC)
Thank you for your attention to this, your description matches my understanding. However, if you read this article from the POV of someone who knows nothing about it, knowledge of the term 'race' is assumed, as the word is used without explanation.
EdJogg (talk) 18:57, 27 February 2008 (UTC)
In the absence of anyone else doing it, I've added a line about 'races' to the lead paragraph. This description was arrived-at with the help of the Wiktionary definition of 'race (noun)'. It would be a good idea for an 'expert' in the subject to check my wording!
EdJogg (talk) 13:33, 6 March 2008 (UTC)
I've reworked the intro to try and make it less technical while being as descriptive as possible. Let me know what you think. --Wizard191 (talk) 03:16, 7 March 2008 (UTC)
That is exactly what it needed. As a 'layperson' (albeit with a good understanding of mechanical things) that is a very clear description. Thank you.
My only reservation is that "ball bearings" is used to introduce three consecutive sentences in paragraphs three and four. This is a tricky one, as the term is needed in these locations, but a slight re-ordering should be enough. This is a minor style issue though, rather than one about content. The whole is a great improvement.
EdJogg (talk) 08:05, 7 March 2008 (UTC)
I've done some copy-editing to address this. Hope it's OK now. EdJogg (talk) 10:56, 7 March 2008 (UTC)
Thanks for cleaning up my style issues. It looks much better to me. --Wizard191 (talk) 13:17, 7 March 2008 (UTC)

[edit] "Angular Load"?

The section on angular contact bearings includes this line:

An angular load passes in a straight line through the bearing, whereas a radial load takes an oblique path that tends to separate the races axially.

Should that second word be "axial"? MrRK (talk) 06:14, 6 March 2008 (UTC)

Yes you are correct that should be axial. I went in and changed it already. --Wizard191 (talk) 13:18, 7 March 2008 (UTC)