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RPM SPA motor bearing replacement
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frcn
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frcn
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Posted Mon Apr 21, 2014, 5:34pm
Subject: Re: RPM SPA motor bearing replacement
 

For press fit parts, the inner can be put in the freezer and the outer left in the sun or, if it can take it, heated up with a hair dryer or heat gun, etc.

 
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DavecUK
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Posted Tue Apr 22, 2014, 2:52am
Subject: Re: RPM SPA motor bearing replacement
 

Nice job on that bearing replacement.
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ham
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Posted Tue Apr 22, 2014, 8:12pm
Subject: Re: RPM SPA motor bearing replacement
 

many thanks to all the thread contributors. I had no idea these bearings could be replaced, or where to begin, for that matter. Hope to keep the old girl alive for another decade or more!
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herman2p
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Posted Mon Jun 16, 2014, 2:44pm
Subject: Re: RPM SPA motor bearing replacement
 

I am about to rebuild a similar SPA motor with the same problem.  Can I ask what was the outer diameter (OD) of the bearing you purchased was?  I would guess 32mm from the housing without disassembly.
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BIGALE4499
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Posted Mon Jun 16, 2014, 3:59pm
Subject: Re: RPM SPA motor bearing replacement
 

35 MM
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ham
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Posted Mon Jun 16, 2014, 6:57pm
Subject: Re: RPM SPA motor bearing replacement
 

I think it is a standard bearing size, just go with what is recommended.

I took apart the motor three or four times as I had reversed that inner bearing sleeve, and then thought that I had too much of a rattle, but that turned out to be my new pump making funny noises… Go figure…  

Tap the motor apart with a screwdriver or small socket aligned against the vent holes with a hammer to open up a gap. Once you have a small gap, then use the screwdriver to pry the casing apart. You can really lever the casing apart quite easily with a rocking motion between the halves, but be sure to go from point to point around the clock face so that the casing doesn't get cockeyed and jam.

I did not need to use the gear puller, but rather was able to take the bearing off without difficulty. I may have tapped it a couple of times with a screwdriver. When replacing, be sure to note the orientation of the reducer sleeve if any, simply align and put the casing back on. It should all pop into place. There is also a spring washer at the back of the motor to keep the shaft tight. If you had a deep socket, you could conceivably tap the bearing on, but it has to fit just snugly around the inner race or else you could destroy the bearing.

On reassembly, I also shimmed the casing with some cut-in-half thin washers after a couple of trials, as I think the bearing I purchased may have been ever so slightly too short, and the shaft did not turn freely enough.
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herman2p
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Posted Mon Jun 23, 2014, 10:33am
Subject: Re: RPM SPA motor bearing replacement
 

Thank you for all the help fixing the motor in my Wega Lyra.  

I purchased a pair of vxb 6202z 15mm x 35mm replacement bearings on ebay for ~$5 delivered .   Using a set of gear pullers, vice, socket set, and your post as a guide I was able to replace the bearings in my motor in less than an hour.  The motor is as quiet as the day it was new!!!  

Thank you for all of your help!!
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