Stihl MS200t bearings from Husqvarna??

[redlight066]

I ordered bearings and seals direct from husky for a T540 XP. These look awful familiar. Cost was $33 for both sets I've done a bunch of MS 200 rebuilds. The aftermarket bearings just don't have tight enough tolerances. Crankshaft still had a little play so out they came. So I've been hosed at the Stihl dealer for bearings and seals to the tune of 65-70 bucks......until now maybe

 

[Stump Shot]

Stihl lists the size as 12x24.5x8.8, Husqvarna does not list size just part number 505394701. Wonder if you could look at the bearings from each and see if there is a common bearing size to these.

 

[mgr1]

Any help with this?

 

[redlight066]

Harbor freight micrometer measures same OD and 8.7 MM height on both. Dunno how to get an accurate ID tho. Found an old one in the trash from a build last week. Old one is on top. They do have different numbers etched on them.

 

[Chainsaw Jim]

They are needle bearings and will have a little play in them.

 

[Al Smith]

They are not really needle bearings,they are roller bearings by definition .

 

[Stump Shot]

This type bearing will seem a little sloppy especially when dry. Some oil applied takes care of this.

 

[tickbitintn]

The AM ones of this type have enough slop to throw a dead cat sideways through them...

 

[Dub11]

The AM ones of this type have enough slop to throw a dead cat sideways through them...

lol.

 

[beaglebriar]

Harbor freight micrometer measures same OD and 8.7 MM height on both. Dunno how to get an accurate ID tho. Found an old one in the trash from a build last week. Old one is on top. They do have different numbers etched on View attachment 119553 them.

Measure the crank diameter.

 

[redlight066]

Measure the crank diameter.

Damn, I feel dumb now. Lol sitting here drinking my coffee and all I hear in my head is DUH!! I'll measure today and post the crank diameters

 

[redlight066]

The AM ones of this type have enough slop to throw a dead cat sideways through them...

Exactly

 

[Al Smith]

It's been my contention that worn out bearings have caused the seals to leak on these things causing the most failures .It was thought faulty carbs were the problem but I'm not so sure that's true .I've changed bearings and seals on several which has cured the problem .Now they may be 60 bucks OEM but look what the saw is worth .

 

[Wilhelm]

Harbor freight micrometer measures same OD and 8.7 MM height on both. Dunno how to get an accurate ID tho. Found an old one in the trash from a build last week. Old one is on top. They do have different numbers etched on View attachment 119553 them.

Measure from outer race to tip of a roller, will not be a perfect measurement but can show if there are any significant differences between the two bearings.

Just an idea how I would try and check.

 

[redlight066]

It's been my contention that worn out bearings have caused the seals to leak on these things causing the most failures .It was thought faulty carbs were the problem but I'm not so sure that's true .I've changed bearings and seals on several which has cured the problem .Now they may be 60 bucks OEM but look what the saw is worth .

Agreed. Parts for the 200 have sky rocketed in the last year or two though. I think we all have been disappointed with the quirks of using AM parts. Just hanging it out there as an alternative. Last OEM intake boot I bought was $50. That was after buying a bag full of Chinese ones that couldn't pass a pressure/vac test. Inside lip on the boot didn't seat in the groove of the cylinder.

 

[angelo c]

Bearing should work. My concern would be for the seals...
Because my middle name is "bakelite"!!!!

 

[redlight066]

Both wear a 12mm crankshaft

 

[Marshy]

They are not really needle bearings,they are roller bearings by definition .

The term "roller bearing" is a generalized term to describe a contact rolling element type bearing. Some specific "roller bearings" are the deep groove ball bearings, angular contact ball bearing, cylindrical roller bearing, tapered cylindrical roller bearing, and the needle roller bearing.

A needle bearing has rolling elements that are long and slender cylinders that resemble needles, like used in the wrist pin. Ball bearings had a ball rolling element. Cylindrical contact bearings have cylinders for rolling elements.

The bearing in the picture most definitely appears to be a cylindrical roller bearing.

 

[Al Smith]

More on the 200T bearing .If you look at them you can see a fiber thrust washer on one side .That's the parts that wear out and allows the side slop in the bearing . If it weren't for that design I doubt the actual rollers would ever wear out . A roller type can take a lot of radial load but unless it's tapered like a wheel bearing on an automobile it can't take a lot of thrust load. Thus it's the weak link in an otherwise excellently designed little saw .

 

[Lightning Performance]

Radial roller bearing is the correct terminology.