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Have a ballbearing NMB(or any type of fan) fan with noisy bearings? Now with pics!

post #1 of 27
Thread Starter 
If you have an NMB ballbearing fan with noisy bearings, and dont wanna replace it, you can repack the bearings with new grease by doing these simple steps:
EDIT:
NOW WITH PICS, and a few more in depth steps.

1. Peel back label on back of motor

2. VERY VERY carefully remove the plastic snap ring inside of the fan, be careful and cover it with your thumb coz they LOVE to fly!

3. store it in a VERY safe place so it dosnt get lost.

4. remove fan blade assembly from fan frame

5. remove bearings from fan's frame

6. look at the bearings, make sure they are relubeable(unsealed ball bearings) if unsealed, continue to step 6. if sealed, find a DEAD fan with good bearings and simply replace the ball bearings.

7. if it doesnt have sealed bearings, some dont, you can take the ball bearings out and soak them in rubbing alcohol(91 percent kind) to remove the old, spent grease.


8. dry them compleately to not let them rust from the small amount of water in the rubbing alcohol.

9. find some lightweight grease(even vaseline works) and re pack the freshly cleaned bearings with brand new grease, be sure the whole bearing is fully packed with new grease, or itll still make noise.

10. reassemble the fan and test. if it makes noise still, either the bearings are shot, or they arent packed enough. if they arent packed enough, pack some more light weight grease into them, and reassemble again.

11. your fan is now refurbished and ready for work again! Ive done it to a few NMB fans. it works great if done properly! I hope I help some people with noisy fans, happy refurbishing of fans!

EDIT: Pics for disassembly:

1. / Uploaded with ImageShack.us[/IMG]



/ Uploaded with ImageShack.us[/IMG]

2. / Uploaded with ImageShack.us[/IMG]

4.

/

5. [/ Uploaded with ImageShack.us[/IMG]
Edited by pyro_dude - 5/15/11 at 4:43pm
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post #2 of 27
Great idea. Thanks for sharing. I'm going to reference you in my fan lube thread.

What about lithium grease?
Edited by ehume - 2/20/11 at 4:13pm
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post #3 of 27
Thread Starter 
yes lithium grease would also work also coz its the same consistency and viscosity of vaseline. Vaseline is all i had laying around when I did the refurb. And it worked great!
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post #4 of 27
Thread Starter 
Quote:
Originally Posted by ehume View Post
Great idea. Thanks for sharing. I'm going to reference you in my fan lube thread.

What about lithium grease?
BTW, thanks man, im glad you think its a good idea!
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post #5 of 27
High Temp Lithium or Silicon Brake Grease/Lube (the type used for brake caliper slides) is excellent for this purpose as well as for sleeve bearing fans.

I remember using Vaseline to pack bicycle, roller skate, and skate board bearings back when I was a kid in the 60's. Nice to see that people are still using it today.
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post #6 of 27
Thread Starter 
Quote:
Originally Posted by PapaSmurf View Post
High Temp Lithium or Silicon Brake Grease/Lube (the type used for brake caliper slides) is excellent for this purpose as well as for sleeve bearing fans.

I remember using Vaseline to pack bicycle, roller skate, and skate board bearings back when I was a kid in the 60's. Nice to see that people are still using it today.
yes I use a lithium-based assembly lube called Luberiplate 150(i think) for assembling engines, and most engine builders use this kind of assembly lube for building their engines. Comp cams has a special lithium based grease that they pack with their cams, and if you dont use it, it voids the Comp Cams warranty. But this lube is too light for ball bearings, it has to be more of a grease like stuff, the Luberiplate is lighter more like a very light grease/oil combination, its designed to mix into the oil and become oil on the first fire of an engine. Even airplane engine overhaulers use this stuff. Thats where I got my tube of it, from my old work where I used to work on airplane engines.
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post #7 of 27
Before actual assembly lube like Lubriplate 105 we used STP.

CRC's Sta Lube SL33011 is my Caliper Grease/Lube of choice. SL3301 is my second choice.
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post #8 of 27
Thread Starter 
Quote:
Originally Posted by PapaSmurf View Post
Before actual assembly lube like Lubriplate 105 we used STP.

CRC's Sta Lube SL33011 is my Caliper Grease/Lube of choice. SL3301 is my second choice.
Caliper grease would work great in fan ballbearings too. I wouldnt use grease on sleeve bearings because its to thick, but on ballbearings, its awesome. And axle grease as well. So before Lubriplate 105 existed,you used STP? STP what?
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post #9 of 27
Quote:
Originally Posted by pyro_dude View Post
STP what?
"It's the racer's edge."
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post #10 of 27
Thread Starter 
Quote:
Originally Posted by ehume View Post
"It's the racer's edge."
The racer's edge? id like some more info on this stuff! Could I please get some?
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