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  1. #14
    Join Date
    Nov 2005
    Posts
    574
    Well I was told the in house guys would handle the job but now today it's back to me again.

    I spoke to Bearing Corp today because I wanted a beefy bearing. They taught me allot about bearings in a short period on the phone. I thought I knew allot, boy was I wrong. Great people over there.

    Bearings are coming in on Monday, 10 h.p. motor on a 30" dia fan. There are no labels. cfm I fiqure is around 10000-12000cfm.

  2. #15
    Join Date
    Jan 2004
    Location
    New Jersey
    Posts
    534
    Originally posted by cyro
    Well I was told the in house guys would handle the job but now today it's back to me again.

    I spoke to Bearing Corp today because I wanted a beefy bearing. They taught me allot about bearings in a short period on the phone. I thought I knew allot, boy was I wrong. Great people over there.

    Bearings are coming in on Monday, 10 h.p. motor on a 30" dia fan. There are no labels. cfm I fiqure is around 10000-12000cfm.
    If you use the grinder ( SPARKS !!!) have a fire extinguisher ready.

  3. #16
    Join Date
    Feb 2004
    Location
    northern colorado
    Posts
    90

    20 year old

    By the time you get the saft out of the blower it's going to be out of balanced.

    Replace it!!

    Grainger has alot of fans in stock.

  4. #17
    Join Date
    Aug 2002
    Location
    manitowoc wisconsin
    Posts
    4,943
    The most cost effictive way would be to cut the old shaft out of the way & replace the shaft & bearing assembly.Or you could reuse the old shaft only to find it is slightly out of balance after the new bearing is installed & probably was the cause of the bearing failure to begin with upsetting the customer & you.
    Take your time & do it right!

  5. #18
    Join Date
    Nov 2005
    Posts
    574
    The inhouse guys took the bearings and where suppose to do it at 5a.m. Friday.

    I don't know yet if they ran into any problems, I hope all went smooth for It will just be dumped back to me.

  6. #19
    Join Date
    Oct 2005
    Posts
    922

    Unhappy

    Have done about fifty of these on large units and I no longer like them. You have received good advice. Best thing is to plan on several hours of cleaning so if you can spry it down in advance do it. Bring lots of rags and sand cloth. Sand while you can still spin the shaft. If you can't move the bearing after cleaning and tapping and heating you will need to cut it off, then clean again. After all this the new one will go on or you will sand and clean again until it does.
    Good luck it will be ok

  7. #20
    Join Date
    Nov 2005
    Posts
    574
    After all said and done they have decided to install a whole new unit.

    Hope to do it during Thansgiving shut down for saftey concerns with all the students walking around.

  8. #21
    Join Date
    May 2000
    Location
    Monmouth Junction-NJ-USA
    Posts
    5,996
    Oh Mikey you gonna work on Turkey Day??????? Need any help?????
    If you really know how it works, you have an execellent chance of fixin' er up!

    Tomorrow is promised to no one...

  9. #22
    Join Date
    Nov 2005
    Posts
    574
    Happy Thanksgiving Ray.

    I do allot of work during there shut downs on holidays.

    No people in the way, all alone, no noise, I can get a ton done during these days.

  10. #23
    Join Date
    Oct 2007
    Location
    Plainfield Il
    Posts
    43
    I would not wast your time on a piece that old. Get a new shaft, some bearings and a new cage. I would bet that the old cage is out of balance and could have contributed to the bearing failure. If the unit was not that old I might try and salavge the shaft.

  11. #24
    Join Date
    Mar 2008
    Location
    Florida
    Posts
    193

    Smile

    Could not be given better advice for removing a bearing than whats been given. Seeing I have a couple of pillow blocks to remove I'm gonna add some more expertise to the removal.

  12. #25
    Join Date
    Dec 2005
    Location
    chicago
    Posts
    106
    Quote Originally Posted by jkochan View Post
    Worked on a couple of these. Sand and CLEAN the shaft VERY WELL and the new bearing should slide right down the shaft. If you oil the shaft lightly it will help. Too much oil on the shaft will cause a suction seal and make the bearng harder to move. If the shaft is damaged it should be replaced or repaired. I worked on an air handler at a large church that had the brick and stone work put up AFTER the equipment went in .... no way to extract the 10' long shaft that was damaged by a spun bearing. Welding and grinding were not an option. Found an epoxy product from Belzona Moutain States (http://www.belzonamsd.com) which allowed me to repair the shaft in place. I have used this company's products for years, but this was new to me. I rebuilt the shaft with epoxy and it has now been in service with the new bearing for 5 years. Hope this helps.
    belzona some good stuff but its needs to be real clean where it goes. and if its going to be a thin layer drill into the material a little bit in a few spots to let it get a better bite. I have used it on many cast iron compressors to convert jg to PA in the Yorks. wow old thread

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