Waste of grease?

[GmB]

The old SIP rake threw a wobbly the other day, main drive shaft bearing failure.
I have religiously greased this bearing but the bugger still collapsed. On strip down I couldn’t see how the grease is meant to get where it is needed. I removed the flange, twisted the bearing outer out of the flange, second from left in photo, gave it a clean, but cannot see anywhere for the grease to pass into the bearing.
Was the collapsed bearing sealed for life and not a greaseable type? Are greaseable bearings available? Nipple on flange suggests it is/was able to take grease.

Cheers.

 

[john432]

If it's grease able,then the outer race has a groved ring around its circumference, and maybe 3 to 4 hole s to allow the grease to entre the race, have another look,

 

[Farmergrum]

Over greasing probably why it failed, there looks to be grease tracks on bearing, will be a small hole(s) in these to let grease into bearing... this type of bearing doesn’t need over greased....

 

[john432]

Yes that bearing was greasable, but the centre could have been put in the wrong side out maybe

 

[Bury the Trash]

The only difference between a sealed bearing and one thats not is the seal

If you want it too be a greased one just pick out the seal (s) it's not rocket science.

The' functinality of oil ' or' grease ways' drillied/ machined into the pins etc is another matter all together.

 

[Courier]

We had an early 2 bar reciprocating harrow with a flywheel and yoke drive similar to a vari-spreader ( I think it was blue and NOT a Lely of Vicon or Amazone) which was suppled from new with sealed bearings - The importers would pick out the metal seals and drill a couple of 1.5mm holes in them and put them back and drill the housings to put a grease nipple in - a couple of pumps of grease every 4 hours of work until it exuded through the holes drilled in the metal seals was the order of the day.

 

[Dave W]

Those bearing inserts in cast housing are awful in my experience. You grease them and it looks like grease is coming out the bearing. Job done. Or do you think.
But look closely. Grease is actually coming out between the outer race and housing and not getting to where it needs to be

 

[GmB]

Thanks for everyone’s prompt replies, john432, I

had a good poke about and have found 1 tiny hole.
Over greasing? Guilty, pump it until it comes out!

 

[Bury the Trash]

Will putting heat on a nipple and housing help a blocked one, for some reason I've never done but just about to try will report back ....
Will have a fire extinguisher at hand I guess...

 

[michael N123]

Those bearing inserts in cast housing are awful in my experience. You grease them and it looks like grease is coming out the bearing. Job done. Or do you think.
But look closely. Grease is actually coming out between the outer race and housing and not getting to where it needs to be

My slurry whisk used to get threw 1 or 2 a year

gave up greaseing it and just throw oil on every time I use it and this bearings done atleast 5 year

 

[GeorgeK]

Those bearing inserts in cast housing are awful in my experience. You grease them and it looks like grease is coming out the bearing. Job done. Or do you think.
But look closely. Grease is actually coming out between the outer race and housing and not getting to where it needs to be

Yes hugely annoying, the self aligning ones like we have in this instance are the worst for it. The grease escapes where the bearing swivels in the housing and never goes in the bearing

 

[Jon Boy]

Dont try to re use the old housing if the bearing's gone the housing is shot as well.

 

[Lincsman]

Yes hugely annoying, the self aligning ones like we have in this instance are the worst for it. The grease escapes where the bearing swivels in the housing and never goes in the bearing

Or does it get a bit in the bearing until the seal stops any more going in and the rest out the swivel gap? It would only need the tinyest bit anyway.

 

[Fendtbro]

Any much more than a couple of pumps often just pushes the metal seals out.. then it’s all heading for destruction! Some bearings have lugs to stop rotation but some don’t. The Bomford head wears the housings and gets slack but the bearings are still ok. Rubbish setup all round, all bearings should have a foolproof greasing system.

 

[GmB]

All sorted, new one says self lube, so won‘t bother greasing it

 

[pail of ale]

Is it a tightish fit in the housing ?
A bearing that size in a good fitting housing ,I would (just me ) give 2 or 3 shots/strokes once a day or 10 odd working hours . Dont know anything about over greasing and I only use basic lever and pistol guns

 

[deleted user 837354]

I agree with some of the sentiments above, if it was having all new guts it would have an all new housing as well. I'd take the view that it's probably all borked. They normally are when I ever have had the misfortune to take one to bits. Usually the bloody shaft as well.

 

[David.]

*If you can achieve it safely* I think these type of bearings are better greased with the shaft rotating, it does seem to help the grease make it into the actual bearing as opposed to coming straight out between the insert and housing.

 

[milkloss]

*If you can achieve it safely* I think these type of bearings are better greased with the shaft rotating, it does seem to help the grease make it into the actual bearing as opposed to coming straight out between the insert and housing.

not sure you could now it's a sealed unit in there. I doubt it will have the strike or the hole in the outer shell.

 

[David.]

If there is no grease groove around the new insert outer race, agreed.