Crank bearing thread

[blsnelling]

They MUST be Silicon Nitride (SiN4) which are very dark grey. The ones with white Zirconia Oxide (ZrO2) balls will fail in very short order.

These are what I use.
http://www.microblueracing.com/microblue-ceramic-ball-bearings.html

 

[rattler]

Brad I will shoot you a pm with the mfg of the bearings

 

[TreeLife]

@blsnelling the saw rattler is speaking of had around 200k board feet on it, tuned fat, good oil, and a professional user behind it.

 

[blsnelling]

What saw, oil, and ratio?

 

[TreeLife]

What saw, oil, and ratio?

Model 2071, red armor @ 32:1, 28" bar, tuned to 13,8xx on a typical day.

 

[AlfA01]

I was really discouraged to find the plastic/nylon caged bearings in 5-series Huskies. I replaced mine on the 562XP rebuild and couldn't locate any metal caged bearings to install instead.

Anyway, here's to hoping they hold up. As some others have said, they felt good before cases were split. My PTO side had a real hitch in one of the balls. It was almost has if a piece of plating had flaked off or had pitting corrosion.

My dealer looked at me like I was nuts when I told him I wanted the new bearing pressed on (I don't have a press yet). Then I showed him the problem.

 

[Marshy]

There are good reasons why ceramic bearings are not commonly used in crankshaft.

 

[blsnelling]

There are good reasons why ceramic bearings are not commonly used in crankshaft.

Please explain.

 

[Stihl working Hard]

Very interesting thread guys need more insight into the ceramic bearings pros and cons

 

[David Young]

Please explain.

Brad please share your experience. Did changing the bearings to ceramic increase performance?

 

[Tor R]

If I split the case I toss in new bearings, unfortantly Huskies 242 PTO bearing is NLA, that is the only saw I dont swap both bearings in.

If I get one decent 550 project with a usuable crank it get new bearings no mather what, I somehow think Husky slap them together in a hurry, new bearings, heat, tools, just get that bottom part as good as possible before I build her up again.

Other then then 242's and 550's, SKF Explorer 6202 C3 VG104 is the bearings I mostly buy, they are OEM bearings but I buy them from one SKF dealer in Norway, Ashell placed in Kristiansand, 1/2 the price compared against Husky.