The OMAS BB that I recently regreased had thin metal seals on each side of the bearing. The seals could easily be picked off though.
Dennis Young
Hotaka, Japan
>
> Chuck didn't mention one detail on the OMAS BB that is nice feature. The
> inner seal is left off each bearing and a flexible plastic sleave goes from
> one bearing to the other to protect the bearings from dirt. The sleave has
> accordian folds so it can be moved away and grease added to the bearings.
>
> I have used this bearing size to replace the bearings in a shot Campagnolo
> Record BB. The cups and spindle were machined to accept the bearing and it
> worked great.
>
> Joe Bender-Zanoni
> Great Notch, NJ
> ----- Original Message -----
> From: "Chuck Schmidt" <chuckschmidt@earthlink.net>
> To: <classicrendezvous@bikelist.org>
> Sent: Sunday, August 22, 2004 4:22 AM
> Subject: Re: [CR]OMAS BB bearings photos ?
>
>
>> r cielec wrote:
>>>
>>> Ahoy !
>>>
>>> I am of the understanding that OMAS offered an alloy cup bottom bracket
> requiring a special bearing. I do not know what "special" means although,
> they may have been sealed units and of dimensions not standard for bb's.
>>
>>
>>
>> The bearings in OMAS's cartridge BB are a standard size "sealed" annular
>> bearing and are available from any bearing supply company. I've
>> replaced a few in the past and that's where I got them (cheap too, by
>> the way).
>>
>> Special would refer to anything other than the ubiquitous cup and cone
>> style bearing, in this case an annular bearing.
>>
>> http://www.flying-scot.co.uk/
>>
>> Chuck Schmidt
>> South Pasadena, Southern California
>>
>> .