joejansal
noticing nice landscape pebbles
Member since August 2009
Posts: 98
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Post by joejansal on Nov 15, 2014 15:15:38 GMT -5
hi all,
I have a thumlers ar2 tumbler, also a 2 3lb barrel chicargo tumbler, question is my lortone 2 3lb barrel tumbler runs a lot slower than the other 2 is this normal, I checked all bushings and put new belt on but it seems that it turns slower. use 3 in 1 oil every change of grit on all shafts, and there is no oil on belt. thank you joejan
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blessed
spending too much on rocks
Member since January 2010
Posts: 329
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Post by blessed on Nov 15, 2014 18:01:20 GMT -5
I had a similar problem with a couple of mine. I discovered the bushings on the motor were dry. Oiled them and now it runs normal. James
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Post by deb193redux on Nov 15, 2014 19:06:16 GMT -5
the question is whether it slows down under load. if so, the motor is failing, or there is slippage somewhere. if not, it is jut the rpm of the motor different across models.
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Nov 15, 2014 19:26:14 GMT -5
Used to have Chicago Electric. It ran faster than my Lortones. The CE was about 55 RPM and the Lortones about 40 RPM ...give or take a few RPM.
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Post by connrock on Nov 16, 2014 12:31:45 GMT -5
From what I can find the Lortone barrel has a 4-1/2" OD and the Thumler's AR-2 barrel has a 5" OD.
These dimensions are for the maximum OD and it looks to me that the AR-2 barrels have a "rim" so the actual barrel may be the same?
Some of the problem areas have been mentioned so I'll just cover what I've found in my experience. There is a "drivetrain" for every tumbler that starts at the motor and ends up at the barrel(s). If the motor doesn't clow down drastically under a load it should be OK. The next component to check is the pulley on the motor.It should have a small "set screw" that has to be tight or the pulley will slip. The next component is the drive belt between the motor pulley and the drive shaft pulley. If the drive belt is stretched or has oil on it it will slip causing the barrel(s) to turn slower then normal.You can clean all of the pulleys and the belt with alcohol. The next component is the drive shaft pulley.It too has a small set screw that must be tight.
The next component is the drive shaft.It has a rubber hose covering it and it must be clean and free of any oil.It can also get a "glaze" on it over time which should be "roughed up" with a piece of sand paper or emery.The "idler shaft" should also be checked at the same time and corrected if anything is fond to be in poor working condition.
The next components are connected,,,,,First check the plastic bearings to make sure they are clean and oiled properly.Also check the metal ends of the shafts ,that rotate in the plastic bearings, at the same time to make sure they are not worn.
The last ting to check is the barrel itself.Check to make sure there is no oil on it and also that it doesn't have a "glaze" on it.If it does have a glaze you can use the sand paper or emery again.
One other thing that may slow down a tumbler is overloading the barrel(s). I may have missed something here but I think I remembered all of it. Good luck,,, connrock
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joejansal
noticing nice landscape pebbles
Member since August 2009
Posts: 98
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Post by joejansal on Nov 18, 2014 15:21:48 GMT -5
thanks connrock, you really gave me a lot of good info, will check all thanks to all you guys for helping with this little problem. joejan
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