re-greasing Sugino 75

What tools do I need, got a crank puller, and numerous spanners etc do need a lockring spanner?

I presume you mean a Sugino 75 bottom bracket ?

Read this: (they use a Hatta BB, but it is pretty much identical to a Sugino 75)

[ame="http://www.bikeforums.net/showthread.php?t=208402"]Maintain that sexy (or not so sexy) track BB - Bike Forums[/ame]

cheers fella.

. . . . I have done the same service with nothing more than a screwdriver and a hammer, just go gently as you place the screwdriver in various notches and holes and gently tap things loose or tight.

• don't forget that one cup is reverse threaded, that is: the cups unscrew different ways, both turn the same way as the wheels (going forward).
  

If you're replacing the bearing with loose (best!) don't put too many in.

If you're replacing the bearing with loose (best!) don't put too many in.

Good point !

The Sugino 75 BB has a retainer cage, so it kind of forces you to use a certain amount of bearings - but if you want to save a tiny amount of weight and decrease friction simply pop the bearings out of the retaining cage and chuck it in the bin.

The cage is only there to help assembly at the factory, but if you fill your cup with grease before assembly it is very easy to stick the bearings into the cup one by one and the grease holds them in place very nicely.

The whole point of a loose bearing BB is that it runs so freely, so chuck that cage in the bin !

Haven't done it in ages, but I seem to recall you you use the same number of bearings as in the cage plus one extra to take up the slack. (Happy to be corrected on this!)

Looks like you're missing one but if you stick one more in it'll run like a tractor.

might do that next time, just notice it feels a bit funny and there is a small amount of play so gonna strip it and see. Do Condor sell Pin Spanners - need to do this tomorrow as out all day on th ebike saturday!? I have all the other tools, found my lock ring spanner in my bag!

They usually do the Park ones.

If you're stripping the BB it seems daft not to put fresh bearings in!

I'd defo pick some up in CONdor, just in case the play is due to worn/damaged bearings.

cage = 10 bearings

no cage = 11

usually, and each side that is

don't listen to me, turns out thats not always the case

They usually do the Park ones.

If you're stripping the BB it seems daft not to put fresh bearings in!

I'd defo pick some up in CONdor, just in case the play is due to worn/damaged bearings.

Good point, probable would make sense, i'll call in tomorrow morning and see what they have, what size are the bearings then?

Do Condor sell Pin Spanners - need to do this tomorrow as out all day on th ebike saturday!? I have all the other tools, found my lock ring spanner in my bag!

Go for the green one:

Good point, probable would make sense, i'll call in tomorrow morning and see what they have, what size are the bearings then?

Haven't a clue!

CONdor keep the 75 BB so they'll be able to suss that out.

Bottom bracket bearings usually use 1/4 inch balls.

If buying loose balls ask what Grade they are - if they don't know buy elsewhere. Balls are graded by their roundness expressed as parts per million; so Grade 1000 can vary by 0.001" whereas for Grade 25 it's 0.000 025". Doesn't sound much but consider the loads on your bottom bracket and the ball that at that moment is 0.001" bigger than its neighbours taking that load and that's why your bearings become pitted.

Campagnolo were traditionally Grade 25 but might be as good as 10 now. Shimano are apparently Grade 45 up to XT with DA and XTR being 25. Ceramic bearings are usually Grade 5 or less! Weldtite (very often offered in shops) are Grade 1000 and are only suitable for furniture castors.

The lower the Grade number the better.

Ok, Cheers. Condor did not have the pin spanner, would this one be ok?

Ok, Cheers. Condor did not have the pin spanner, would this one be ok?

Yes, that is a pin spanner.

Ha ha ha... fair comment. Well, gotta hope the weather is good tomorrow and the BB holds out for a few more miles as had to order on line as no bugger has one locally!

Might see if CONdor has bearing on the way home or tomorrow as I am passing there in the morning.

Ha ha ha... fair comment. Well, gotta hope the weather is good tomorrow and the BB holds out for a few more miles as had to order on line as no bugger has one locally!

Might see if CONdor has bearing on the way home or tomorrow as I am passing there in the morning.

Make your own, you can see what it consists of, a stick and a couple of screws should do it, a pretty basic tool.

Large masonry nail and a hammer will do it.

Large masonry nail and a hammer will do it.

Like I say above, I have done this with a hammer and small screwdriver.

The good thing about a pin spanner is that it is easy to hold the cup when you are tightening the lock ring, stopping the lock ring pulling the cup around and ruining your perfectly dialed in tension on the bearings.

Ok, Cheers. Condor did not have the pin spanner, would this one be ok?

It's a useful tool to have in your tool box. It's not as strong as, and does not have the leverage of, a dedicated pin spanner (eg Campagnolo's).

However, at the risk of stating the obvious, it has the advantage of being adjustable and so fits all those odd hole spacings. Because the hinged arm should always be "trailing" whichever way you are turning the cup the pins are removable and screw into either side of the arms.