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Thread: Bearing stuck on shaft
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03-04-2007, 05:23 AM #1
Bearing stuck on shaft
You have a bearing stuck on a shaft.
By heating the bearing, we know that the metal will expand.
Does the hole get bigger, smaller or stay the same?
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03-04-2007, 06:01 AM #2
Re: Bearing stuck on shaft
Its a trick question I reckon , metal expands when you heat it this helps to remove tight fitting bearings , thats the simple answer
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03-04-2007, 07:34 AM #3
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03-04-2007, 07:53 AM #4
Re: Bearing stuck on shaft
It becomes wider.
SKF Bearings (Sweden) sells a special device - I used it several times - where you put your bearing over an induction coil and energise then that coil so that the bearing heats up and fits over the ax.
http://www.acorn-ind.co.uk/products/prind.htm
Last edited by Peter_1; 03-04-2007 at 08:02 AM.
It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
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03-04-2007, 08:02 AM #5
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03-04-2007, 09:01 AM #6
Re: Bearing stuck on shaft
It gets bigger depending upon its coefficient of linear expansion and temperature increase.
Whilst it will expand towards its virtual centre it will also expand in circumference which will more than offset this movement towards its centre and so its internal diameter will increase.
Paula
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03-04-2007, 09:10 AM #7
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03-04-2007, 05:43 PM #8
Re: Bearing stuck on shaft
Another way you may soak it into hot boiling compressor oil.
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03-04-2007, 08:35 PM #9
Re: Bearing stuck on shaft
or freeze the axe if your bearing isn't allowed to get very hot. Soem use the same device as they use to make an ice stops on water lines.
It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.