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Does it matter which way the FAG Superblend outer race is installed in the cases, i.e. cage rivets towards in inside or outside?
Superblend installation
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Jerry Doe
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FAG Superblend installation
Hi All.
I had my new main bearing inner races fitted to the crank a while ago by a crank specialist. I am now ready to install the outer races, check spacing etc and cannot remember which way around they go or does it matter? (I lost track of which race goes with which and am not concerned about that). I need to know if the caged side with the writing should face towards crank or away or does it matter?
cheers Jerry
Hi All.
I had my new main bearing inner races fitted to the crank a while ago by a crank specialist. I am now ready to install the outer races, check spacing etc and cannot remember which way around they go or does it matter? (I lost track of which race goes with which and am not concerned about that). I need to know if the caged side with the writing should face towards crank or away or does it matter?
cheers Jerry
grandpaul
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The caged roller assembly ("middle" section) doesn't have lettering. I've only seen them packed with the rivets facing the same side as the lettering.
As far as the inner and outer, there is only one way they can go. the inner must be installed on the crank with it's lip facing the crank cheek, and the outer must be installed with it's lip facing the outside of the case.
As far as the inner and outer, there is only one way they can go. the inner must be installed on the crank with it's lip facing the crank cheek, and the outer must be installed with it's lip facing the outside of the case.
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grandpaul said:
Well, every bearing shown was the same type, FAG NJ 306 E, as used from 1973.
I don't think any standard Commando roller main bearing type had only one lip on both the inner and outer.
Some bearings were NF type which has the a double lipped inner so the rollers and cage are captive on the inner race.
Hello All. best wishes to Everyone
LAB wrote["Some bearings were NF type which has the a double lipped inner so the rollers and cage are captive on the inner race".]
Lab, can u give me more info on NF type please. . I have a SKF catalog(bit old now) but cannot find much reference to NF applying to our Commandos.
No1. getting an inner race NF 306E , (steel or brass cage, dont matter). main thing is the E. I can find plenty of references to NF306 but nothing to NF306E.
No 2. the outer ring for this setup requires one lip only . I cannot find any of these numbers at all. there are references to using single lip and and also to fit loose angle ring, but this is not what I want.
In summary a NF306E inner race( double lip rollers ) and an outer race with single lip, as a manufactured pair. I suppose 2 interchangeable items would probably do but the tolerances for loose items is a lot wider than a manufactured pair. (there are 2 tolerance classes, for interchangeable and manufactured pair.)
A phone call to the local SKF branch did not result in what I am seeking.
I like this setup as it is easy to remove the inner race from the crank with a lot less likelyhood of inflicting damage on the c/shaft by the over zealous use of wedges and levers.
Any info from contributors is welcome. exact bearing numbers would be a big help.
kind regards
Bradley
LAB wrote["Some bearings were NF type which has the a double lipped inner so the rollers and cage are captive on the inner race".]
Lab, can u give me more info on NF type please. . I have a SKF catalog(bit old now) but cannot find much reference to NF applying to our Commandos.
No1. getting an inner race NF 306E , (steel or brass cage, dont matter). main thing is the E. I can find plenty of references to NF306 but nothing to NF306E.
No 2. the outer ring for this setup requires one lip only . I cannot find any of these numbers at all. there are references to using single lip and and also to fit loose angle ring, but this is not what I want.
In summary a NF306E inner race( double lip rollers ) and an outer race with single lip, as a manufactured pair. I suppose 2 interchangeable items would probably do but the tolerances for loose items is a lot wider than a manufactured pair. (there are 2 tolerance classes, for interchangeable and manufactured pair.)
A phone call to the local SKF branch did not result in what I am seeking.
I like this setup as it is easy to remove the inner race from the crank with a lot less likelyhood of inflicting damage on the c/shaft by the over zealous use of wedges and levers.
Any info from contributors is welcome. exact bearing numbers would be a big help.
kind regards
Bradley
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B.Rad said:
As far as I know, the factory discontinued using "NF" type main bearings when they introduced the FAG NJ306E, as it appears they had been fitting both types up until then, the original "Superblend" R&M/RHP (6) MRJA30 was "NF" type (if you can find any?) or somebody else here may know of a suitable modern equivalent bearing type?
jimmytwin said:
NF spec bearings are still available from some manufacturers, according to the spec sheets some put out.
Whether they still stock any is another question.
Speaking of spec sheets, does anyone have such, or a link to, that shows the 'Superblend' bearing types.
Quite a number of manufacturers do a NJ306E C3 spec bearing.
The tech sheets show it as a plain cylindrical roller type bearing - but with more rolling elements (rollers) than the plain ole NJ306 bearing.
The extra rollers give it the E - for Extra heavy duty type use.
Any mention of tapered rollers in these things, anywhere, that anyone can quote ??
Whether they still stock any is another question.
Speaking of spec sheets, does anyone have such, or a link to, that shows the 'Superblend' bearing types.
Quite a number of manufacturers do a NJ306E C3 spec bearing.
The tech sheets show it as a plain cylindrical roller type bearing - but with more rolling elements (rollers) than the plain ole NJ306 bearing.
The extra rollers give it the E - for Extra heavy duty type use.
Any mention of tapered rollers in these things, anywhere, that anyone can quote ??
madass140
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I was informed that the rollers were barrel shaped and that was the idea behind the Superblend. that with crankshaft flex the ends of the rollers would not dig in, my source whoever it was years ago may very well be wrong, I meaured the rollers once and found them to be parallel, Nowhere have I read anything official from FAG that the rollers are other than parallel, ie: normal rollers.
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[/quote]
Can never be a difference in quality between a bearing the same brand and model (as in picture) made in Germany vs. India?
Piero[/quote]
The common wisdom from about 25 years ago when there were no oriental bearings in the mix was, if buying any bearings from a bearing supplier as opposed to OEM to use bearings such as SKF made in England, Germany, Canada or USA but not from their Portugese or south American factories as they would not stand up as well.
Can never be a difference in quality between a bearing the same brand and model (as in picture) made in Germany vs. India?
Piero[/quote]
The common wisdom from about 25 years ago when there were no oriental bearings in the mix was, if buying any bearings from a bearing supplier as opposed to OEM to use bearings such as SKF made in England, Germany, Canada or USA but not from their Portugese or south American factories as they would not stand up as well.
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