Technical & Reference Section > Tech and Restoration

Shimano DX crank owners, have a ? for you..

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MSMXII:
who's running a set of OS Shimano DX's with a sealed bottom bracket? I'm going to be running a set on my new build and want to convert the looseball and cone they came with to a setup that uses sealed cartridge bearings. American BB or eur coversion, It doesn't matter to me,  as long as I can use the stock DX spindle.

Any help/info would be greatl appreciated...thx guys  ;)

meticulous:
they all came with loose ball as far as i'm aware, and due to the unique axle i dont think they have ever been made.....

hunterdubber:

--- Quote from: meticulous on March 16, 2011, 07:07 AM ---they all came with loose ball as far as i'm aware, and due to the unique axle i dont think they have ever been made.....

--- End quote ---

Exactly what Sam said above I'dve thought  :-\

The Sugino CV BB ( same as HLT cranks) are a threaded axle sealed bearing BB O/S set  ,, but do not have the all important splined edge to carry the spider for a DX crank set up  :-\

As they say round here

" I think tha's puncin' up brew "

or you're gonna really really struggle  :-\

Why is it so important for them to be sealedbb any anyway

If the BB is fitted and greased correctly it would be fine  ???  :)

,,if you're thinking about using in competition (racing)half seriously ,, sell the DX and get Redline 401's with the Techmatic sealed BB  ::)  :4_17_5:

hunterdubber:
I suppose you could modify/ruin the axle by machining the threads of to a certain diameter to install cups with sealed bearigs cartridges , but that would be  :-X  :police:

So not impossible  :)

Jon The Bassist:
One option could be to use the standard bottom bracket, well greased, and use the outer plastic guards from a modern semi-sealed bottom bracket kit eg:
http://www.ukbikestore.co.uk/product/163/bb4jsa/4-jeri-smart-arse-bmx-bottom-bracket.html

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