mag side bearing failure

[camel]

whilst stripping my motor to do some tweeks i gave my flywheel a quick check for bearing play and i felt quite a bit of "rocking",i wouldnt mind but this bearing has done 1000 miles
anyone else had premature bearing failure/wear like this?

[bristolmod]

cheap bearing?
crank out of true?

[camel]

It was a FAG bearing,i,l check the crank when i remove it,im just suspicious of reputable bearings being made in India and wondered if anyone else has had a problem...hopefully its a one off then

[Donnie]

Ummm quite a few fag bearings are made in india and have been for years. Many genuine piaggio bearings similarly made in japan / china.

I don't know why people automatically assume somethings shite because of where its made.

Its not where its made, it's about the quality control.

[camel]

good shout bristolmod....crank is about 0.010" out,its welded and not twisted a couple of turns in the vice opposite the crankpin has pulled it to within 0.001"
apologies to the indians Donnie

[storkfoot]

Camel, sorry to hear of your woes. For my own knowledge, when this happens to a crank that has been welded, can the crank be saved?

[camel]

id welded this crank before i built a crank trueing jig so yes i never rechecked it,i clamped a known true crank,welded it but didnt re-check it,so its my own fault
weather its welded or not the webs can splay inward or outward on a rebuild,ie opposite the pin,only marginal...but its magnified at its furthest point(where i put the dti) ie right by the flywheel thread so you can either use wedges/chisel to open them out or clamp them in a vice to close them in and re-checking it on a jig,...so yes id say it can be done..
but trying to rotate a web on a welded pin would probably cause a problem or be very difficult,you maybe get a thou or two rotation but anymore your going to break the weld or do damage

[storkfoot]

Cheers for that. I have never had a crank welded but I have thought about it. That said I have (touch wood) never had a crank go out of true on my TS1 (Grampian fettled Indian webs and ke175 Conrod).

[gaz_powell]

/\ /\ /\ thats the kiss of death !

[vespanic]

It's good to know that you have found the fault but there are some fake bearings out there. A friend has recently realised that he had fitted some fake bearings bought from a reputable dealer. Dealer was not aware but further investigations found that fake bearings are usually stamped with Japan because people buy those more readily than ones stamped India. I believe there were a load of fake bearings (FAG) sold on eBay a while back