Bearing locking liquid

[BarrieSteel]

Just a thought on crankcase bearing instalation 350 single, would it be a safe measure to add locking fluid to bearings before installation, although the housings seem ok.Would the heat on crankcase to fit bearings destroy retainer fluid or set to quick.

[cmfalco]

Just a thought on crankcase bearing instalation 350 single, would it be a safe measure to add locking fluid to bearings before installation,

It would be safe, but pointless. The differential thermal expansion of Al and steel, not the actual temperature, would quickly break the bond.

[paul.jameson]

Unless there are signs of the old bearing rotating in the housing, I wouldn't bother.

[cmfalco]

Unless there are signs of the old bearing rotating in the housing, I wouldn't bother.

If there are signs of it rotating, the problem can't be fixed with Loctite for the reason in my previous post.

[BarrieSteel]

Thanks both for your replys, all looks ok just machine tool marks in case housings, no aluminium pickup on bearing outer races.So will put new bearings back in normal way without retainer.

[nevhunter]

It should require heating of the case and maybe Dry ice on the races. If the race has been loose it's outer surfaces will have a bit of a polished look. I allways apply heat (carefully) when removing races from a case where a fit must be maintained IF you are worried about it moving use 3 ball races to make sure they don't move. OR stepped rollers but good luck with getting them. The Outer Ball race drive side REQUIRES a circlip to keep it in the correct place. and the correct spacers. Nev

[BarrieSteel]

Hi Nev,Thank's for the info,yes will use ball bearing type as standard on 350,on outer timing bearing have a double shielded type will pop one seal out as to stop engine oil going into primary case if wet sumped.Just read about the unlipped roller type outer race can move out of its housing towards crank.Also read some chaps are using ball type bearings in the 500 engines,easy to find and cheaper.As long as good brand of bearing.Modern bearings superior to loads,than of yesteryear.Using NKE bearings ,Austria made.

[cmfalco]

some chaps are using ball type bearings in the 500 engines,easy to find and cheaper. ... Modern bearings superior to loads,than of yesteryear.

Gold Star engines use a ball bearing at the drive-side end to register the crankshaft, combined with a roller bearing to carry the load. Contemporary catalogs show the roller bearing that is used has 5–6 times the load capacity of the ball bearing. I haven't taken the time to look for the ratings of modern bearings of the same dimensions as those but, from a simple materials point of view, it would require bearing steels to have increased their yield strength by a factor of 5–6 for a modern ball bearing to replace a roller bearing in one of our engines.

[nevhunter]

I've had the Big roller on the drive side come out till it hits the side of the flywheel, and you really don't want that to happen. Nev

[nevhunter]

Self aligning ball bearings have the lowest load figures. Deep groove ones are the best of the ball bearings. You're not likely to have sudden catastrophic failures unless the cage fails and the balls OR rollers come out. You can PRELOAD tapered rollers, usually in vehicle bevel drives to retain more accurate dimensions under load. Anti friction bearings fail due fatigue of the contact surfaces eventually. Not like PLAIN bearings though extreme loaded bushes like in the small ends of some diesels can have bit's fall out of them and babbit lined bearings also.. Metal bits going through anti friction bearings can cause cage failure. This tends to happen more in Gearboxes. Nev