Mastermind
Work Saw Specialist
I have reused bearings.......but only after careful cleaning and inspection.....
Case Bearing Installation
- Thread starter Mastermind
- Start date
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All the machinery and parts coming from China right now are a crap shoot but some will prove out over time if they are good or not. I have been in on installs where the bearings are supporting 40 tons on either end of the shaft using China made bearings and have been in service 6 years now, at the time of install all the other machinists and mechanics working with me said they would be lucky to make a year. Previously we had changed the bearings on this piece of equipment every 2-3 years and they would cost 3-4 times the cost of the China bearings.
Now I won`t recommend using China made bearings in chainsaws, I don`t have enough hours on a 046 I put them in yet to give a recommend on them. They did seem well enough made to give them a try in one of my own saws. You see, I always like to experiment on my own equipment and run it for an extended amount of time before giving out a recommendation.
komatsuvarna
Arboristsite MVP
After a closer look, I can feel the wear on these when I ''rock'' the center back and forward.
No use building a nice saw around a worn out bottom. I'll just order the bearing from Stihl and be done.
Yes, there's a bearing supplier in Denver, Brown's or Brownell's, I have limited time to spend though.
I'm spending all my free day time in flood recovery. My farm and bass fishery got shredded, 400 tractor dumper loads of fill to rebuild the washed out dikes, berms and roads.
The saw was going to Mastermind, but I need every saw I can get a hold of for clearing debris on the 60 acres of creek bottom and slough.
Trying to cut a lane in to a jungle of small junk trees so we can get a trailer in to begin loading debris.
I have friends to help, but they are sawless.....
Darn it...I got price cut before I ever started my business enterprise...and here I was thinkin I was gonna be "duck dynasty" rich !!!!!
sorry to hear about your misfortune.
stubnail67
Addicted to ArboristSite
Now Jon is heating the PTO side at the bar pad first. He'll get it hot enough that the bearing will just drop in. How long you have to heat it, and how hot, is just something Jon has learned for doing a **** load of saws. ever try putting the bearing in the freezer for ten or so minutes?
In this picture you can see that he's installed the oil pump on the case. This is actually a junk pump that he keeps just for this reason. The oil pump is used to locate the depth of the bearing in the bore. When the case half is hot enough, the bearing just slides in against it.
Like this.....
No hammering or pressing is needed.
Last edited:
stubnail67
Addicted to ArboristSite
dont see my reply LOL.... have you ever tried to put the bearing into a freezer?
Trx250r180
Saw polisher
whats the difference of reusing a main bearing vs a rod bearing ,they are both used and have the same hours on them ?
They are constructed differently and take different loads during operation of a chainsaw (and many other types of equipment.)
Sometimes you just have to bite the bullet when in a bind like yours and pay off shelf prices. My builds are planned well in advance but then again I have oodles of saws hanging around.
...and the Rod Bearings can't be replaced (unless you replace the crank too) as easily as the case bearings. but i get your point.
JJ what do the 6202 bearings fit ?
6202 is the common size for many 50-70cc saws...except for the proprietary PTO bearings in 024/026/MS-260/034/036/MS-361/044/046/MS-440/MS-460...
Eccentric
Mister Wizard
Husqvarna 61-272XP series is one.
Thanks JJ,
What size fit the 460 ? In SNF ? My buddy said he would grab a handful off the shelf for me.
I have a pair of 6202 sitting for a rebuild that i think were for a 440 or a 460 ..??
nmurph
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6202 are in 346/357/372 just to name a few.
jughead500
Sasquatch
I thought i was having trouble with the MS260 Flywheel side bearing not going in enough but found yesterday after pressing it back out that the replacement bearing i got was at least 1/8" thicker than the Original.brand is niachi from japan.anyone else found this problem?
nmurph
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It sounds like you got the wrong bearing. The numbers on the bearing tell the dimensions.
