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Post by HankRocks on Jun 25, 2017 5:50:57 GMT -5
Before I tear into to, does anyone know if the motor bearings for the motor on a Thumler's Model B tumble can be replaced, or can they be lubricated. Suspect that the high-pitched whine when running is a sign the bearings are going out.
Thanks
Henry
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doublet83
starting to spend too much on rocks
Member since March 2016
Posts: 118
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Post by doublet83 on Sept 1, 2017 17:49:05 GMT -5
Actually started having this same "high-pitched whine" on my model B as well. Unfortunate..since I've had mine for less than a year.
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Post by coloradocliff on Sept 1, 2017 18:02:47 GMT -5
Bet that they are bushing type and not ball bearing. I rarely see ball bearing these types with all the planned obsolescence built into products these days. Maybe a couple drops of oil at the ends of the shaft with care taken not to get it into the windings. Just have the 4 retaining clips on the ends. Might be worth taking it apart and looking. I would likely get another motor headed my way. Always seemed like the motors were built too light for long term operation.
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Post by pauls on Sept 1, 2017 23:45:55 GMT -5
I hate things with planned obsolesence built in, if it was me I would have a go at pulling it apart just for the satisfaction of flipping a rude gesture at the makers when I get it fixed.
It looks like the end plates are held on with those clips, what concerns me is the 4 rivets closer to the shaft, they might hold a plate that holds the bearings, if thats the case you may need to drill the rivets out to get at the bearings, 4 small bolts and nuts may be all thats required to replace the rivets on each plate. Bearings that size are only a few bucks each.
Have a go, it sounds like the bearings are cactus and in that case probably soon the whole motor if they aren't replaced. You have nothing to lose.
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Post by captbob on Sept 2, 2017 9:00:30 GMT -5
Pardon my asking the obvious, but you have been oiling the motor regularly haven't you? I've got a bunch of these same tumblers running, with some for many years and have never had this problem.
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doublet83
starting to spend too much on rocks
Member since March 2016
Posts: 118
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Post by doublet83 on Sept 2, 2017 11:14:34 GMT -5
I oil the motors once a month. I do have 3 model B's total. The other two are a bit over one year old and don't have this problem either. Seems to be an one off bad motor perhaps.
I'm far from handy, but I'll try playing around with it like pauls was nice enough to suggest. This ringing sound it gives off travels surprisingly far and is driving me a bit crazy.
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Post by coloradocliff on Sept 2, 2017 11:19:53 GMT -5
Pardon my asking the obvious, but you have been oiling the motor regularly haven't you? I've got a bunch of these same tumblers running, with some for many years and have never had this problem. Yepp Reminded me.. I had a serious loud squealing from one of mine and all I needed to do was to oil the little bushings that the carrier rods ran on. Solved the problem quickly and am sure the lessened resistance prolonged the motor life. Oil the carrier rods bushings @hankrocks
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Post by captbob on Sept 2, 2017 11:32:25 GMT -5
Yes, the bushings on the shafts need oiling, but the motor needs to be oiled regularly as well. There are small oil ports on the top of the motor at either end. One drop in each once a month or so is what I do.
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Post by coloradocliff on Sept 2, 2017 11:42:34 GMT -5
Yes, the bushings on the shafts need oiling, but the motor needs to be oiled regularly as well. There are small oil ports on the top of the motor at either end. One drop in each once a month or so is what I do. TY The reminder Bob ..
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doublet83
starting to spend too much on rocks
Member since March 2016
Posts: 118
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Post by doublet83 on Sept 2, 2017 12:23:32 GMT -5
For clarification, I do oil both the shafts and motor. This ringing sound is clearly coming from the motor and I would bet that my issue, along with Hankrocks issue, is due to something defective in the motor.
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Post by coloradocliff on Sept 2, 2017 12:30:56 GMT -5
jamesp Our version of MacGyver has a belt spray that he uses to quiet that down. May well be the motor though. I run a large commercial greenhouse operation and have dozens of motors running at any given time. Mine die at times and I simply replace them. I don't get extra mileage by trying to baby a worn motor . Yep Good Luck on your motor Doublet83
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,155
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Post by jamesp on Sept 2, 2017 12:39:04 GMT -5
Try a drop of machine oil strategically placed in the shaft ends. Greenhouse motors are usually shot when they go coloradocliff, that is some hard duty. Fanning air is hard on motors. Tumblers not so much. Undersize a blower/fan motor and she will burn out overnight.
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Post by coloradocliff on Sept 2, 2017 12:41:34 GMT -5
Try a drop of machine oil strategically placed in the shaft ends. Greenhouse motors are usually shot when they go coloradocliff , that is some hard duty. Fanning air is hard on motors. Yeah and all them heater motors are hard to get too and pricey. Rare to lose a propeller type though. Headed for the Farmers Market to grab a couple squash..
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Post by spiceman on Sept 2, 2017 15:04:19 GMT -5
As luck has it, I had a tumbler motor go bad. It over heated, I think the bearings went bad. I mounted a fan on the motor shaft Blowing air in the motor vents. And oiled it as noted in the manual.
I found a mortor just like it at a flea market for $5 bucks. Lucky, it's still running today. It's been over a month.
The tumbler motor was smoking real bad from the front and extremely hot. Then seized up. Hope everything works out for you that easy. It's all luck. Didn't even try to replace the bearings. Could be lots of trouble.
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