Purchased a bunch of Huskies

[lehman live edge slab]

In my opinion, some of the faults on the 5xx series are downright assembly errors at the factory.
Some of the crank bearing failures are due to leaner mixture.
I've said it before, when Husqvarna makes service tools for cold pressing crank bearings, it's hardly better maintained at the factory production...

Nylon bearings were used on the 346 as well, and there were significantly fewer PTO bearing failures on that series compared to the 550.
And doesn't Stihl also use nylon bearings now and then?

Pretty much all nylon cage included a large number of the 440/460 bearings.

 

[Rich Fife]

I wonder how ethanol effects the nylon cage...

 

[mainer_in_ak]

I'm almost certain they are OEM 044 bearings that are steel caged... I'll have to look at my order form and check my bearing bin.

Nice! One of the most beat up 044's ive see up here in interior Alaska, is still on its original steel-caged crank bearings. The guy has fed 3 wood stoves in a 10,000 square foot log home, with that 044, since it was new.

Anyhow, cracks me up the claims against steel caged bearings. All my fleet of saws new and old are set up for 6202 or 6203 bearings. In the past 3 years I've worn out 2 crank bearings in high hour saws. Here's exactly what happened:

One crank bearing on a cs 530, I could hear a slight rattle. Kept running it. Eventually the crank seal went out and the saw wouldn't hold a tune. Pretty boring crank bearing replacement. Nothing was damaged.

In my cs 8000, it has spun a bearing. The vibrations have increased, and it begins to run away when warm, into the 14k rpm territory, then i fiddle with the high jet. The vibrations are actually severe enough to trip the chain brake. But no rattles or noises. Time to tear it down and split the cases. Another boring, worn out bearing failure.

 

[Ketchup]

If you wouldn't mind. Base width and length, the alignment pins and the bolt pattern center to center.

The ones I have are steel caged...

I think I'd have to clearance the case because the large end of the rod would hit... (I think).

550 / 562
Hole pattern
FW-PTO, Intake side 53mm / 57mm
Exhaust 42mm / 45mm
Intake to Exhaust 37mm / 38mm

Base width. 63.83mm / 67mm
Base length. 81.84mm / 79.5mm

Locate pins OC. 35.5mm / 37mm

All holes measured on center. I just eyeballed it, so I could be off 0.5mm.

Edit: The 550 jug has a 49mm base flange. Enough room for the 562 flange to be thinned and drop in.

 

[lehman live edge slab]

Nice! One of the most beat up 044's ive see up here in interior Alaska, is still on its original crank bearings. The guy has fed 3 wood stoves in a 10,000 square foot log home, with that 044, since it was new.

Anyhow, cracks me up the claims against steel caged bearings. All my fleet of saws new and old are set up for 6202 or 6203 bearings. In the past 3 years I've worn out 2 crank bearings in high hour saws. Here's exactly what happened:

One crank bearing on a cs 530, I could hear a slight rattle. Kept running it. Eventually the crank seal went out and the saw wouldn't hold a tune. Pretty boring crank bearing replacement. Nothing was damaged.

In my cs 8000, it has spun a bearing. The vibrations have increased, and it begins to run away when warm, into the 14k rpm territory, then i fiddle with the high jet. The vibrations are actually severe enough to trip the chain brake. But no rattles or noises. Time to tear it down and split the cases. Another boring, worn out bearing failure.

Good thing most of the 044/046 bearings have nylon cages. They all go but if a metal cage one actually let’s go more often then not it’s a top end too. You know so much I think you need to get a job at skf.

 

[SimonHS]

550 / 562
Hole pattern
FW-PTO, Intake side 53mm / 57mm
Exhaust 42mm / 45mm
Intake to Exhaust 37mm / 38mm

Base width. 63.83mm / 67mm
Base length. 81.84mm / 79.5mm

Locate pins OC. 35.5mm / 37mm

All holes measured on center. I just eyeballed it, so I could be off 0.5mm. View attachment 450129

Edit: The 550 jug has a 49mm base flange. Enough room for the 562 flange to be thinned and drop in.

Yay for millimetres! I thought that all Americans used inches? I'm an old fart that learned both systems at school. I use mm when I feel like it and inches when I feel like it. Sometimes both sets of units on the same sketch drawing.