MAIN BEARINGS FAILURE, MUST CHANGE

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the main advantage I see is that the crank will not spread, loose pin fit is no longer an issue so you could use the crank for say 10 big end rebuilds instead of 3

if the bearings/cases can take the axial loads then its worth doing just to stop the crank spreading.

they get a longer life out of them than the rollers so don't have to open up the engine as often but for the husaberg if you need to change the CB or the piston it needs to be split anyway so .....

I'll try them if I can get my crank/rod down to 3.8kgs
 
Hi!

The sparepart tells me the original main bearing is:

NJ206ECP/C3HVC058. My local big bearing store found the closest one which is NJ 206 ECP/C3 <-- is this a totally diffrent bearing? What does the HVC058 stand for?

Are the ORANGERBERG:s mainbearings only way to go? (worth the extra money?)

regards

juhis
 
27 pages juhiss and your conclusion is that Orangeberg has the only bearings?

they are an off-the-shelf KTM and Husaberg item. the extra numbers are because they are especially hardened. THEY'RE AN OEM ITEM.

regards

Taffy
 
I use these main bearings for a ktm 560 smr or 610 rfs crate motor.

NTN bearing: SKF TMB206/C3 JR2 on the left part no: 06250.60206
and stock on the ignition side NJ206ECP/C3HVC058 part no: 800.30.019.000

you can order them at your local ktm dealer

i have 150 hours on mine and they are still ok.

regards
 
Damn this thread.

I had 5300km on the clock and stripped my engine (-02 644cc). The original ball type main bearings were still fine, I even had bought new 6206 C4 TN9 bearings already. I could have just put them in and be pleased, but then I got reading this and got very confused...

Well then I found a new NTN TMB206/C3 JR2 (0625060206) ballbearing from my parts box that came with some parts, my dealer didn't have another in stock, so I bought NJ206 ET2XCS46 (50330082000) roller for the right side.
Some say its better than the original SKF NJ206 roller (80030019000)?

We'll see how it works.
 
are there any reliable references about alternative bearings that are same or better qualityt han OEM for 644?

and only 4 road use, how many km (hours) bearing lasts?

I am reading thread and just got lost in bunch of information :twisted:

thanks :oops:
 
I started the thread a while back and it was one of the biggest ever, I use my own brand of bearing specially obtained and I started fitting them back in 2005 and still no reported failures. They are the same design identical to original. I sell them cheaper and they stopped the problem that genuine caused. PM me for more information. Orangeberg
 
Hi, what part number bearings should I use in the stock engine, with the balancer.

I've found NJ 206 ECP SKF 30x62x16, will this be ok? A lot of part numbers in this thread is not helping at all ;)
 

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