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Shaft Repalcement Help!!!!

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Old 05-20-2013, 12:11 PM   #1
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Join Date: May 2013
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Shaft Repalcement Help!!!!

I am replacing the shaft in a large squirl cage fan its 4' dia. has a 60" 2 7/16" solid shaft. I need advise as to how to get the wheel off. I understand how to heat and quench it, my question is how do i get the heat out of the shaft fast enough to make it work. The mass of the shaft is more than that of the hub on the wheel, or do i need a large enough BTU torch to get the hub hot faster? i cant damage the wheel. Is there any other option for getting this done.

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Old 05-23-2013, 10:08 PM   #2
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Re: Shaft Repalcement Help!!!!

When we change pillow block bearings on big blowers (100 hp.) we shine up the shaft with fine emory cloth, then touch up with crocus cloth ,soak with PB Blaster and come back the next day and have at it.
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Old 08-18-2013, 07:39 AM   #3
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Re: Shaft Repalcement Help!!!!

Heat the blower wheel hub with the torch. It will heat up and expand quicker then the shaft.
How many times must one fix something before it is fixed?
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