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RPM SPA motor bearing replacement
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Discussions > Espresso > Espresso Mods > RPM SPA motor...  
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ham
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Joined: 27 Oct 2003
Posts: 27
Location: USA
Expertise: I love coffee

Posted Sun Apr 13, 2014, 7:01am
Subject: Re: RPM SPA motor bearing replacement
 

Here is an end-on picture of the motor with the pump removed. I tried to max out exposure/sharpness to be sure there is nothing hiding, but I don't see any writing on the bearing. Thoughts?

ham: Reneka Motor Pic.jpg
(Click for larger image)
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skydragondave
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Joined: 18 Feb 2013
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Location: Ontario, Canada
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Posted Sun Apr 13, 2014, 7:10am
Subject: Re: RPM SPA motor bearing replacement
 

Looks like a 6202-ZZ to me. Once you remove it you will find it either on the metal shield or on the outer race in very small print, possibly on the opposite side.
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BIGALE4499
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Joined: 26 Apr 2010
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Location: RI
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Posted Sun Apr 13, 2014, 7:18am
Subject: Re: RPM SPA motor bearing replacement
 

I had to replace the berings on my Izzo Duetto II RPM motor because the pump is on top of the motor. When the pump leaks it ruins the motor bearings. Your photo looks like water has gotten into the bearing.
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ham
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Joined: 27 Oct 2003
Posts: 27
Location: USA
Expertise: I love coffee

Posted Sun Apr 13, 2014, 7:18am
Subject: Re: RPM SPA motor bearing replacement
 

Hmmm..... Water in the bearing would explain the pump noise and now the motor noise.  How do I remove it??
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ham
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Joined: 27 Oct 2003
Posts: 27
Location: USA
Expertise: I love coffee

Posted Mon Apr 14, 2014, 7:11pm
Subject: Re: RPM SPA motor bearing replacement
 

Is replacing the bearing entirely obvious? Unbolt the end, pull it off and the bearing drops off the shaft? I will have the new bearings by Wednesday.
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skydragondave
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Posted Tue Apr 15, 2014, 5:42am
Subject: Re: RPM SPA motor bearing replacement
 

Mark the halves of the motor for reassembly, carefully separate, use small gear puller to remove bearing from shaft, use long socket to reinstall, being careful not to damage the metal shield.
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ham
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Joined: 27 Oct 2003
Posts: 27
Location: USA
Expertise: I love coffee

Posted Sat Apr 19, 2014, 8:14am
Subject: Re: RPM SPA motor bearing replacement
 

Success! there was a reducer sleeve in the bearing which took the ID from 15mm to 13mm. After a lot of cogitating I used a pair of sockets and a vise to press out the sleeve and then reinstall in the new 6202z. Reassembled and works like a charm. Many thanks for the help.

ham: reducing sleeve.JPG
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ham
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Joined: 27 Oct 2003
Posts: 27
Location: USA
Expertise: I love coffee

Posted Sat Apr 19, 2014, 8:15am
Subject: Re: RPM SPA motor bearing replacement
 

sockets aligned in vise to press out insert

ham: pressing out bearing.JPG
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ham
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Joined: 27 Oct 2003
Posts: 27
Location: USA
Expertise: I love coffee

Posted Sat Apr 19, 2014, 8:17am
Subject: Re: RPM SPA motor bearing replacement
 

Insert out. I lubed with some WD40 and placed the sleeve in the new bearing. I used a socket to support the inner race so as to not damage the new bearing, placed it all in the vise and pressed in the sleeve.

ham: bearing out.JPG
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skydragondave
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Joined: 18 Feb 2013
Posts: 168
Location: Ontario, Canada
Expertise: Professional

Espresso: Commercial Only
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Roaster: Has Garanti HG5
Posted Mon Apr 21, 2014, 3:31pm
Subject: Re: RPM SPA motor bearing replacement
 

That's how it's done, congratulations.
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