pewe
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| posted on 10/8/13 at 05:57 PM |
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None-sense question?
So I removed the front hub, outer taper roller bearing as there was something clicking in that area.
Cleaned it using my favourite cleaner - petrol with a bit of diesel added.
Bearing looks OK - no picks or scores.
Blow it out with the air-line and think what a nice whistling noise it's making as as it rotates between my finger and thumb.
Bearing spins faster and faster - more and more noise - little things please little minds etc.
"Frick me" I think "that must be turning at a good few thousand revs".
Suddenly without warning the whole lot explodes showering the rollers and inner all over the place and damn near taking my fingers off.
Fortunately I was wearing thick PVC gloves so only slight bruising.
So the question is - was the bearing defective or because the rollers weren't contained by the race was it my own stupid fault?
Answers on a postcard.......
Cheers, Pewe10 
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Carbonman
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| posted on 10/8/13 at 06:38 PM |
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Think you have answered your own questions
Using the airline will have spun the bearing at a much higher rpm than it was designed for. Taper bearings of this sort are designed for low speed
high load applications ie a wheel bearing
The cage is only there to keep the rollers separated at the correct spacing, the outer retains them.
You should never run a bearing "dry" even at low rpm.
At least you haven't been badly hurt.
Carbon Copies Ltd
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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SteveMX5
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| posted on 10/8/13 at 06:40 PM |
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Of the two choices, definitely the latter 
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Fred W B
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| posted on 10/8/13 at 08:04 PM |
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quote:
was it my own stupid fault?
yes...
Cheers
Fred W B
You can do it quickly. You can do it cheap. You can do it right. – Pick any two.
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Daddylonglegs
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| posted on 10/8/13 at 09:14 PM |
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Bet you can't guess where my vote is? 
At least you;ve still got all your pinkies though, I think they say "lesson learned" 
It looks like the Midget is winning at the moment......
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NigeEss
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| posted on 11/8/13 at 12:07 AM |
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Bearing + airline = good game.......................... Done it several times but obviously been very lucky so far
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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trikerneil
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| posted on 11/8/13 at 05:09 AM |
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Neil
ACE Cafe - Just say No.
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owelly
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| posted on 11/8/13 at 06:27 AM |
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Ah yes, the Bearing Races! We used to get bearings and race them across the yard. Big bearings would howl once up to speed and when you drop them,
they do a bi of a dance and then feck-off really quickly! Nightshifts saw big sparky rooster tails. As an alternative to bearings, spin a nut on a
Phillips screwdriver shaft and then let it slie of onto the floor. Spinning nuts can be a bit more unpredictable as they can jump up and knock your
teeth out. A 2" nut is a bit of a handfull.
All of the aforementioned is fool-hardy and dangerous and not recommended.
http://www.ppcmag.co.uk
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dave r
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| posted on 11/8/13 at 07:58 AM |
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got the t shirt, and the bruises
I'd love to give my imaginary friend a great big hug,
but this jacket makes it impossible.
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dave_424
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| posted on 11/8/13 at 09:38 AM |
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Just like this...
https://www.youtube.com/watch?v=ZBX_8Y1o5hU
[Edited on 11/8/13 by dave_424]
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