Superblend installation

Rohan · Mar 19, 2013

It would have been helpfull if that photo was more from above - so it could be seen if the 'narrowing' at the ends was visible or evident at all.
Or was just a mm of radius.

If you put a straight edge across an 850 FAG bearing roller, light doesn't show except on the radius on the end.
They are near enough to perfectly cylindrical.
If this constitutes 'barrel shaped', then its very very slight ?

The bearing out of an old dommie has a fair radius to it.
http://i1113.photobucket.com/albums/k50 ... ollers.jpg

pierodn · Mar 19, 2013

L.A.B. said:
Rohan said:

I was looking for a photo of the actual rollers, to see where this 'barrel shaped' modification has been done to it.

Click to expand...

It seems clear from the photo (copied below) that the Superblend bearing rollers were not visibly "barrel shaped".

I thought we had basically reached the conclusion that the "Superblend" rollers were not "barrel shaped" but were mainly cylindrical in section and only narrower at the ends.

jimmytwin said:

Click to expand...

Well,
i understood this is not superblend.
But if this bearing is in good shape is a good item or is better to change with a less or more FAG superbled?.
Ciao.
Piero

pete.v · Mar 19, 2013

pierodn said:
[Well,
i understood this is not superblend.
But if this bearing is in good shape is a good item or is better to change with a less or more FAG superbled?.
Ciao.
Piero

You have it apart now so change it. The basic value of the bike will increase way beyond the cost of the bearings. Do not minimize this extremely important aspect of the motor. Your anger will be so much if you need to take it apart again.

Just because it is not broken does not mean it is good.

I am trying to speech you communication working.

L.A.B. · Mar 19, 2013

pierodn said:
Well,
i understood this is not superblend.
But if this bearing is in good shape is a good item or is better to change with a less or more FAG superbled?.
Ciao.
Piero

The bearing in the photo is, as far as I know, a Superblend. Note the faint "6" etched ahead of "MRJA30" the serial number of that engine is 212309.

pierodn said:
my engine are not 72 Combat but have the R&M but only on the drive side, balls on the timing.

If you have a pre-72 engine with a timing side ball bearing then the roller bearing is likely to be a standard MRJA30.
http://www.nortonownersclub.org/support ... e-releases

pete.v · Mar 19, 2013

Here a set i took out of my current cases 210xxx. I believe them to be original. They seem just fine but could not let myself put them back in nor to sell them. They just sit on the shelf reminding me of the past.

Driveside roller, timingside ball.

Rohan · Mar 19, 2013

Is this a combat , do you know ?

The factory always fitted superblends in pairs (?) and that number is pre-superblend (?).
So someone has changed something at some time...

Will that drive side bearing separate, so you can photo the rollers from above ?

pete.v · Mar 19, 2013

Rohan said:
Is this a combat , do you know ?

The factory always fitted superblends in pairs (?) and that number is pre-superblend (?).
So someone has changed something at some time...

Will that drive side bearing separate, so you can photo the rollers from above ?

If you are talking about my bearings in the picture, i would have to say not a combat bearing set. Yes the roller separates, inner come out. 210xxx is beyond the
combat numbers i believe. Better cases, but not combat.

Rohan · Mar 19, 2013

Can you take a pic of the rollers out in the breeze than, as it were.
Looking down along the top of the full length of the rollers.
(Pics of the rollers in superblends are just non-existent)
(let alone any inkling of where they are machined different to be superblends).

LAB posted a link here to Norton bulletins that superblend bearings started after Combats ended manufacture.
Be after that engine number - without finding the numbers quoted.

grandpaul · Mar 19, 2013

Just for what it's worth, I have dismantled Commandos that had single-lip FAG superblends installed with the lips on the outer races to the INSIDE, facing the crank cheeks! It was a heck of a chore to split the cases, then remove the bearings (sometimes from the cases, sometimes from the crank). That's just wrong...

pete.v · Mar 19, 2013

Rohan said:
Can you take a pic of the rollers out in the breeze than, as it were.
Looking down along the top of the full length of the rollers.
(Pics of the rollers in superblends are just non-existent)
(let alone any inkling of where they are machined different to be superblends).

LAB posted a link here to Norton bulletins that superblend bearings started after Combats ended manufacture.
Be after that engine number - without finding the numbers quoted.

Is this what you are looking for?

Rohan · Mar 19, 2013

If thats where your bearing comes apart, then yes, it is.
Thanks.

Nothing exceptional in the roller dept (visible) there...
What is visible is that that bearing is an NU306E - does that still make it a superblend. Hmmm ?

L.A.B. · Mar 19, 2013

Is that a plastic roller cage? :shock:

pete.v · Mar 19, 2013

Rohan said:
If thats where your bearing comes apart, then yes, it is.
Thanks.

Nothing exceptional in the roller dept (visible) there...
What is visible is that that bearing is an NU306E - does that still make it a superblend. Hmmm ?

I never said it was but I am inclined to assume that it is or was. The only thing missing is the c3 amd of course the brass cage. After all, the term "superblend " is quite relative.

L.A.B. · Mar 19, 2013

pvisseriii said:
I never said it was but I am inclined to assume that it is or was.

As it's a 306E it could be?

pvisseriii said:
The only thing missing is the c3

I could be wrong, but isn't that inner race marked "NJ306E C3"?

pete.v · Mar 19, 2013

Yes, after looking at it through the loop, it is c3 but still no brass cage. The ball is also c3

Rohan · Mar 19, 2013

Is the outer race NJ306E or NU306E though. ?
It is quite possible it has been made from mixed parts ?

NU306E is a valid bearing type - there are near a dozen varieties all up of the 306, in various guises.
At least it seems to be an automotive type - not all are.
And it served reliably in a Commando, did it not....

L.A.B. · Mar 19, 2013

Rohan said:
Is the outer race NJ306E or NU306E though. ?
It is quite possible it has been made from mixed parts ?

I don't think it's the first time we've heard of what appears to be an FAG NJ 306E bearing that has an NU outer race? The outer race is the same for both NJ and NU bearings (double lipped outer).

pierodn · Mar 20, 2013

NU costs much less than NJ.
This is what i found into the case, there is not the 6 stamped on and so, as Les teachs, is not a superblend but a standard bearing (but i cannot able to see any difference, wich is please?).
But i have a question: this standard bearing was good items for a non Combat engine?.
Ciao.
Piero

SteveA · Mar 20, 2013

I really do wonder how a small decision by Norton to use particular type of bearing to 'fix', you could say 'accomodate' a problem inherrent in their design, that really became an issue only with the 850 could possibly have used up so may lines of written text, photographs, terrabytes of hard disc and bandwidth over the ensuing 40 odd years....

The guy just said, 'hey, which way round should I fit these'....then he said...'done, thanks'....but we are still here!

Debating what? that pretty much every combination of available ball and roller bearing has been used, correctly or incorrectly, sucessfully and unsuccessfully over those 40 years....OK, understood. Thanks.

Buy the genuine Andover Norton packaged part, don't worry about where it was actually made, let AN worry about that, fit them correctly (as advised), don't be as anal as some of you are about end float (Norton weren't) and ride the damn thing. :roll:

grandpaul · Mar 20, 2013

SteveA said:
I really do wonder how a small decision by Norton to use particular type of bearing to 'fix', you could say 'accomodate' a problem inherrent in their design, that really became an issue only with the 850 could possibly have used up so may lines of written text, photographs, terrabytes of hard disc and bandwidth over the ensuing 40 odd years....

The guy just said, 'hey, which way round should I fit these'....then he said...'done, thanks'....but we are still here!

Debating what? that pretty much every combination of available ball and roller bearing has been used, correctly or incorrectly, sucessfully and unsuccessfully over those 40 years....OK, understood. Thanks.

Buy the genuine Andover Norton packaged part, don't worry about where it was actually made, let AN worry about that, fit them correctly (as advised), don't be as anal as some of you are about end float (Norton weren't) and ride the damn thing.

Well where's the fun in that?

I noticed you added to the sum total as well...

Superblend installation

Rohan

pierodn

pete.v

L.A.B.

Moderator

pete.v

Rohan

pete.v

Rohan

grandpaul

pete.v

Rohan

L.A.B.

Moderator

pete.v

L.A.B.

Moderator

pete.v

Rohan

L.A.B.

Moderator

pierodn

SteveA

grandpaul

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