Sealed vs Non-Sealed BB's

I've been poking around on here and google a bit, and I'm scratching my head as to which BB to go for. I've a set of Sugino 75 cranks on the way, and so was going to get the 75 BB -but I've noticed that they're not sealed. Seeing as the bike they're going on is for everyday use, and so is likely to get rained on during the day (work have banned me from keeping it inside -boo!), am I right in thinking that a sealed BB, like the Miche one is the way to go to save me having to overhaul the bearings every month or two, or are the 75 BB's so much better in quality that they're worth the extra maintenance?

Also, a quick question on chainline... I've Miche Hubs, and an EAI sprocket, which according to Sheldon will give me a chainline of 36.3 + 6.73 = 43.03mm, so does this mean that the Miche BB is a good fit over the Campy 111mm, which is better for a 45mm chainline?

I think I'm talking sense when I say that the Miche BB, with the Sugino 75 cranks are what I want, but a second opinion would be helpful.

(the chainring is a TA 1/8" if that makes a difference)

Just get something for £15-£20 will do you fine.

Unsealed gives you maintainability, which means they will probably end up cheaper in the long run. I ran a road bike with an unsealed BB for years of daily use when I was at college and got away with routine maintenance every six months or so, so it may not be as much of a chore as you think. You can strip, check and regrease inside an hour, two hours tops, and it's a satisfying experience.

Having said all that I went for the Miche sealed BB myself with my Sug Grand Mightys, just because I didn't have the extra £30 for the Sug BB at the time.

How could you say no?

Seriously though I'd go for sealed BB everytime (IMHO).
Is'nt the Miche BB adjustable?
In which case you should be able to dial in the perfect chainline.
Phil wood BB'5 have 5mm of adjustment.

"-PhilSpec’d tm sealed cartridge bearings have the same seals as those used in submersible pump bearings
-Integral one piece shell seals out contamination
-Unique trademark cupped flats for crank arm retention
-Cups provide additional 5 mm of chain line adjustment"

You're right smallfurry, sealed is the way to go!

The miche is adjustable, which is the main reason I was looking at it -just needed some reassurance :)

un-sealed fine for track, sealed for road.

pah! bike mechanicery softies!

Fork out all that dorra for a 75 chainset but then want to put a cheapo miche BB in it that everyone moans about?

Not saying an unsealed track BB is best for the street, but dont be afraid of loose ball BB's altogether. There are ones designed for the road, with decent seals. Maintained well it will spin as fast as a ceramic job.

What d'ya recommend deadly fanny pack? I know it's a crime to marry a nice crank to a poor BB, but if it's the most suitable..!

i thought that the standard sealed miche bb was pretty decent, held up to high torque, general shitty roads, skids etc.. never actually ridden one, but from what ive been told, they're pretty decent?

You would think that they are pretty decent, as miche cranks are good, and any miche parts I have had have been top notch - but just search the forum. Theres a few dedicated threads where people have moaned about how crap the bottom brackets are.

In terms of a good bottom bracket I have little experience of such high-end components, ive ridden & maintain many simple cheap Tange/sugino/SR BB's and extremely crude raleigh ones too. Had decent results with all and little troubles with any.

Dont get Royce

If you want spend the money the Phil Woods are nice.

I bottled out of getting a Campy pista due to the lack of seals, and bought a ceramic/titanium/carbon jobbie for the same price off ZeBay.
Its doing a fantastic job looking nice 'installed in my still bloody crankless' BJ.
Plan to post my thoughts on it when I finally get round to fitting the crankset (currently on order), and the snow melts.

well im in the market for a bb. new build has phil hubs, sugino 75 arms and ring, no rear cog yet tho i'd imagine it will be pretty standard. im told i need a bb spindle length of 107, and miche would be a good look. so other than a standard miche, any advice on what bb to get? i havent really got the money for a phil bb either!

is this the miche bb in question? at 13pounds its tempting as the 75s are 117 on that site as well:

http://www.totalcycling.com/index.php/product/parts_accessories/bottom_brackets_track/bb_miche.html

75's aren't sealed though - imo not ideal for the road.

and yes, i think that is the standard miche bb.

might go for that then... 130 all in for crank arms and bb... thats 20 quid less than most charge for the arms alone

£10.50 here
http://www.parker-international.co.uk/1822/Miche-Primato-Track-Bottom-Bracket.html?referrer=froogle

+£91 for the matching crankset

That's the miche I'm looking at. Though I don't mind spending a few quid if the quality's worth it (nothing too outrageous though!)

I run a set of sugino 75s on a 75BB. I rag it about everywhere, even through rain. No problems.

im currently running an older un-sealed sugino bb (not 75) and have continued cuntish problems!

No one has mentioned the UN54's. I know they have a flange on the drive side, so no adjustment, but for a workhorse sealed B/B the big S have this one figured out available 107-127.5mm. Iv been running one on my MTB (in the shit and rain everyday) for a couple of years now without a peep. At £16.95, they're a bargain too.

For non-sealed it's hard to beat a pair of campy cups, they have ingenious reverse threads inside the bore to force water out. Team up with loose ceramic balls and you're onto a winner, talc for indoor, grease for outdoor.