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Forum Newbie
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Last Login: 10/18/2007 8:25:07 PM
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| I have a model 395 Dremel which I have had for quite awhile. It still works fine but the bearings are bad and it is especially troublesome when trying to use it as a router or for delicate work. Dremel does not offer replacement bearings for this model and I haven't taken it apart yet to see what bearings it needs. I was just wondering if anyone has replaced the bearings in this model Dremel and if so, what bearings does it take.
Dave
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Supreme Being
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If Dremel does not replace or carry the bearings they could be hard to get hold of. I have heard some say that vacum stores might carry the brushes for older models you might check and see if they have the right bearing for you. If not you might consider getting the 400 XPR I received mine and it is smooth as silk and all 395 attachments and bits will fit it. I found mine on eBay for $25.00 it was $40.00 shipping and all it had a 140 pc bit set with it. Well thats all I got.
Doug 
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Supreme Being
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I also have a 395 with a bad upper bearing. The bearing looks like it is only cpmes as a shaft assem. I have a 400 but, I dont want to give up the 395. I wonder if the bearing can be purchased at a bearing supply shop?
Bruce!
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Supreme Being
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You might check with some industrail supply co or a bearing supply if you can find one. Might be cheaper to by a new 395.
Doug
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Forum Member
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| Does anyone know the bearing size is for the Dremel 395? Mine has rough running bearings -- what I do (about once a week) is open it up and put a drop or two of a product called (POWER UP). I use my Dremel 4-6 hours a day so once a week may be to often for the casual user. It is a super lube type oil. In the class of STP I think. I use a syringe that is supplied with the ink refill kits for PC printers to dispense the oil. It has a long metal probe on the end. It works great. If after you do this you get overheating, open it up again and add a drop or two of WD-40. It should dilute the heavy oil a bit, and begin to run cooler. Would like to change my bearings, but like it is said. They are obviously hard to find. And that sucks.
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Supreme Being
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| You could watch for a used one on e-bay or freecycle and get a whole set of replacement parts!
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Forum Member
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| Yep thx, been working on that. Would be nice to have a bearing number or the sizing (without having to take it all appart.) I'm afraid if I try to take the bearings off they may pop apart and I won't get the size right. (Have had that happen to me on other things)
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Forum Newbie
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Same issue for me. I want to replace the front bearing.
On the bearing itself you find the correct reference 626Z.
If you check on any bearing manufacturer catalogue, you find this ref which defines the size. Some added information tells the max rotary speed. Make you choice.
The issue for me is to remove this bearing (the front one) from the rotary armature. I have some tools as bearing extractor and others but I dont know how to proceed with this particular bearing.
If you did it please tell me the different steps to reach objective.
Thanks a lot in advance
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Forum Newbie
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Last Login: 9/24/2009 4:35:40 PM
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As far as I can tell the bearings are an interference fit on the shaft. Basically this means the inside diameter of the bearing is a teeny bit smaller than the shaft and would be installed with a press to push them to where dremel wants them to be on the shaft and keep them there.
I'm not generally a person who mails my toys off for repairs when I can open them up and snoop around in them myself. I'm Pretty Durn Sure that opening the tool yourself to fix it will kinda void the warranty, so be warned! It is perhaps better to simply let Dremel fix the problem.
From what I have seen stiff upper bearings is a fairly common problem with the 395s. I have gone so far as to place the insides of the dremel into a vise and try to pry the bearing off. (It would turn only with great effort when powered up, and not at all on the lower speed settings).
Finally what I did was actually open the bearing seal while it was still on the shaft and placed a very small blob of wheel bearing grease into the cage and thinned it out with WD-40 to water down the grease and let it spread around in the cage. The WD-40 evaporates fairly rapidly when the dremel is used, leaving just the thin coat of grease in the cage. DON'T PACK THE BEARING! Use just a small amount of both grease and WD-40!
My poor little almost seized up dremel now runs as smooth as glass.
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