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MAIN BEARINGS FAILURE, MUST CHANGE

O

ORANGEBERG

Joined Apr 2007
377 Posts | 70+
Orange, New South Wales, Australia
The original bearings that are fitted to your to the range of Husaberg motorcycles are failing regularly the NJ206 bearing inner race will shed metal and put it through your engine and ruin the chrome bore and piston, KTM has the same problem on their EXC 450 -525 and use the same bearing. Either factory will not admit that its an inferior bearing at fails regularly. We do not use the genuine replacement bearing on any of our customers bikes because the failure will continue, We use a heavier duty bearing specially imported into Australia for us. If you hear your engine becoming noisy or get metal on the drainplug magnet dont operate it or you will damage your cylinder and piston.
Ive asked my warranty dept why something has not been done to improve the original bearing to stop this failure they have tried to help me emailed the factory and sent pictures of my bin full of wrecked engines bearings, sleeves and pistons. NOTHING
We do three of these rebuilds a week and recommend that you get it fixed before it happens and save money on the damaged cylinder.
 
  • Helpful
Reactions: zen
1.) are you seeing this failuire on FE450e's or is it more the 550's and 650's and if so why?

2.) is there any operating reasons? or is everybody seeing this failure regardless of use?

3.) How many miles / hours do the factory bearings seem to last?

thanks
 
Trying to understand the connection (if there is one) between these bearing failures and Dale's concerns on the effects of the TPS system, resulting in wild ignition timing and very high engine loads.

Are these failures related to the TPS ?

Cheers

Mark
 
Three a week? I'll admit I don't have a clue how many 'Bergs are Down Under, but in the US if you repaired three a week, in 6 months you could probably have repaired every single one in existence, twice.
 
Re: RE: MAIN BEARINGS FAILURE, MUST CHANGE

bigbob said:
1.) are you seeing this failuire on FE450e's or is it more the 550's and 650's and if so why?

2.) is there any operating reasons? or is everybody seeing this failure regardless of use?

3.) How many miles / hours do the factory bearings seem to last?

thanks
Click to expand...
1: Mainly 550 fe 05/06 we dont sell many 450 fe, 650 fe have been ok,
2: Dont know all types of riders and conditions, 1000k or 3000k regular services or not, crank endfloat done.
ive got two 550 engines here now and one our demo standard bearings and its gone, one other with ball bearing fitted and the roller bearing on the other side has failed 10 hrs. Both cylinders and pistons ruined by metal scoring. KTM 525 exc has the same issue different part number same size bearing different specs, ive been told that the KTM SX 450 06 bearing is better quality its the same part no as the berg bearing. some changes in bearing manufacturer over the years NTN or SKF. im not sure whats causing this but i have some angry owners lately and its damaging the reputation. We have trialed another roller bearing with over 5000km NTN with 13 rollers bith sides( standard are 12 rollers) . We dont use the ball bearing because they lock onto the crank and in the casing
Ive heard the detonation theory as well as overgearing, crank end float, forged crank, steel crank and alignment i dont know the answer, all i can say is the original bearings fail now regularly enough for a factory fix, im sure the warranty claim statistics would reflect a problem.
 
dsducati said:
Are the replacement bearings a ball, roller, or hybrid type like in Weeds gallery?
dan
Click to expand...
Roller both sides, the ball bearings lock onto the crankshaft and casing and are hard to remove 13 rollers not 12 C3 extra capacity.
 
Rev Limiter

Hey guys,

my FE550 has let go with the same thing & is in ORANGEBERG's workshop now. I had been on a 3hr ride & aint no enduro champion so the bike wasnt being worked hard. However, on the way home I stretched out top gear to about 140kms/hr & upon snapping off the throttle I heard said noise.

Would there be any merit to fitting a rev limiter to stop over revving your engine like when you miss a gear or dont change early enough ? The other thing I considered was could the inertia of snapping the throttle off from high revs actually "skid" the mainbearing in the race because of the compression braking the engine generates ? Only a theory !

Wal
 
RE: Rev Limiter

I have seen on pushrod engines with roller cams the roller lifters fails from skidding rather than rolling when synthetic oil is used it just works to good.

I have seen this my self a lot of guy will not use synthetic for this reason including some v8 supercar teams here in Australia.
 
I asked Takis what he uses and he sent me a few pix.
This is the bearing he used,
SKF_OEM_BEARINGS_1.jpg

SKF on left, stock on right.
His engine has no balancer and uses a 670 kit.

More pix here, http://www.husaberg.org/index.php?set_albumName=Takis-engine&name=gallery&include=view_album.php
 
Hi Orangeberg.
What exactly is the bearing # of this bearing you have especially imported to Aus.Also can you explain what you mean when you say the ball bearings "lock" onto the crank and cases.
 
Re: Rev Limiter

wildman said:
Hey guys,

my FE550 has let go with the same thing & is in ORANGEBERG's workshop now. I had been on a 3hr ride & aint no enduro champion so the bike wasnt being worked hard. However, on the way home I stretched out top gear to about 140kms/hr & upon snapping off the throttle I heard said noise.

Would there be any merit to fitting a rev limiter to stop over revving your engine like when you miss a gear or dont change early enough ? The other thing I considered was could the inertia of snapping the throttle off from high revs actually "skid" the mainbearing in the race because of the compression braking the engine generates ? Only a theory !

Wal
Click to expand...


wal

why should you think about changing your riding style in order to make the bike last ?

you like many others are just riding normally , cruise , squirt , back off .

the problem needs to be addressed at the factory , with KTM paying for the repairs.
i too have been a victim of this , and it cost me big . the HUSABERG is a fantastic motor cycle and is let down [in this area ] by a company that will not recognize a weekness
 
RE: Re: Rev Limiter

Hey guys, wasn't there discussion on a another thread about brg failure, I didn't read the whole thing, but fuel quality and inaudible detonation caught my eye. Could this be possible in your case? I've never seen main brg failures from offroad use here. Just adding some food for thought
 
nsman said:
Hi Orangeberg.
What exactly is the bearing # of this bearing you have especially imported to Aus.Also can you explain what you mean when you say the ball bearings "lock" onto the crank and cases.
Click to expand...
Special NTN Roller bearing its still an NJ 206,
the ball bearing grabs on the crank and in the case of the engines that have had the change done and you have to heat and hit the crank out with undue force. if you fit the ball bearing its only time until the roller on the other side will fail.
Use 2 of our special NJ bearings monitor end float and its sweet.
 
Re: RE: Rev Limiter

brisberg said:
I have seen on pushrod engines with roller cams the roller lifters fails from skidding rather than rolling when synthetic oil is used it just works to good.

I have seen this my self a lot of guy will not use synthetic for this reason including some v8 supercar teams here in Australia.
Click to expand...
can you get more info on this theory it seems plausible, i have sent pictures of the damaged bearings to a bearing engineer from SKF and the reply i got was that the wear pattern was consistant with their testing program and concluded it was lack of oil supply, could the skidding give the same wear patterns as lack of oil ????. any one out there got a bro in the kno, i will make contact with the representative from SKF and report back.
maybe we should run a less quality oil but change it more often ?????.
ORANGEBERG ???? im confused.
 
RE: Re: RE: Rev Limiter

I replaced my mains at 5000kms when i rebuilt engine. Them main bearings didnt even look worn at the time (but did them anyway) and they were both roller bearings.

I put roller bearings back in. I have an 05 650.

Yet to see how they fair?
 
Re: RE: Re: RE: Rev Limiter

faktor said:
I replaced my mains at 5000kms when i rebuilt engine. Them main bearings didnt even look worn at the time (but did them anyway) and they were both roller bearings.

I put roller bearings back in. I have an 05 650.

Yet to see how they fair?
Click to expand...
you should be right for a while but when they decide to go it seems to happen fairly quickly, my 650 06 done the same amount of ks and fairly hard rides and its still on originals. i have seen it more on the 550 and a few 450 lately. Keep a close ear on the engine noise and if it starts to rumble shut it down, cathch it early to prevent damage if you keep riding the metal gets up into the bore and scores the piston $1000 to replace both. im considering looking at the cost of rechroming the sleeve i have about 12 now 550 and a Woosner piston to get the price down. im yet to do a 650 so dont stress.
ORANGEBERG
 
Orangeberg,

I'm sure we'll get the chance to discuss oil next weekend, but its why I'm using the Delo 400 instead of Mobil 1 4t as discussed in other threads over the years. Delo 400 for me.

Steve
 
orangeberg,

we started using synthetic about five years ago in our offroad race car we had to two diff pinion bearing failures we then had a gearbox bearing failure that the thust in the touque converter failed in the space of twelve months in that time we noticed strange marks on the bearings so we got in the habit of replacing the bearings every meeting for the next twelve months then we went back to mineral oil no more strange marks or bearing failures we fitted pumps and coolers on every thing to control the heat.

Eighteen months ago we started using motuol the rep asured me we would have no bearing failures and so far we have not but we still get the strange marks [burn marks ] i had been told by guys i know to be carful using some synthetics but did not think much of it.
 

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