Shaft sleeves (terminology?)

DaveS

DaveS

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My saildrive's prop shaft has developed wear grooves where the oil seal lips rub on the shaft. Some time ago there was an article in one of the yachty mags about solving this problem by fixing very thin section stainless steel tubes over the wear areas to give a new rubbing surface. IIRC they were of "top hat" shape and are driven on using a tube pressing on the flange which is then cut off once the sleeve is positioned. Needless to say, I now can't find it.

Is anyone here familiar with these and know where they can be obtained, or even know what the proper name for them is so that I can search on line?
 
I had shaft sleeves on the shaft of my fishing vessel. SS on SS, they were heat shrunk on. They were done by a company that makes and refurbishes props and shafts for all size vessels. Interestingly they were busy at the time spraying metal on tug boat shafts to solve the same problem.
 
wizard said:
Speedi sleeves are the ones that I have used for a Yanmar SD20 got them from RS components of all places!
Click to expand...

Thank you very much indeed! This forum is brilliant.

RS don't stock the size I need (for others' benefit the S120 prop shaft diameter at the seals is 31.75 mm (or 1 1/4 " in old money)) but they do give a link to SKF's catalogue which gives the part numbers and enough relative wear information to persuade me to buy the dearer "gold" type. Armed with the part number I then sourced them at Simply Bearings and they're now ordered. Not cheap, though. Bearing Boys don't stock that size so no chance of a price comparison.
 
srp said:
Never heard of these before, and they sound very useful. Thanks to all for posting the question and answers.
Simply Bearings link
http://simplybearings.co.uk/shop/Engineering+Parts-Shaft+Repair+Sleeves/c4713_4847/index.html

SKF link on how to install
http://www.skf.com/group/products/s...leeve/installing-skf-speedi-sleeve/index.html
Click to expand...

Thanks for the links, now I have to find a supplier here in OZ, should not be a problem, SKF is just up the road.

Good luck and fair winds. :)
 
One alternative is to put the seal into a slighty different position, ie deeper or less deep in its housing.

Metal spraying is the obvious approach to building up the shaft otherwise.
 
savageseadog said:
One alternative is to put the seal into a slighty different position, ie deeper or less deep in its housing.

Metal spraying is the obvious approach to building up the shaft otherwise.
Click to expand...

I've tried varying the seal position on previous occasions, but after doing so a few times avoiding all of the now multiple grooves is difficult.

Metal spraying then turning the shaft back down to size is indeed an alternative, but it would involve removing the bearing and possibly the gear. Incidentally, the SKF literature suggests that while an original (or properly restored) shaft should give longer wear than a standard Speedi sleeve, the dearer "gold" type should give a longer life than the original shaft.
 
I used the smallest size they do (10mm? or 12mm?) on my water pump. That was done early in the year so I can't offer too much comment on the durability of a Speedi Sleeve. £25 for the sleeve was a lot better than £160 for a replacement shaft (rip-off!) though. And if the problem reoccurs I can just grind off the sleeve and fit another.
 
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